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January

Two New Antigen Tests Reviewed

1/03/2022
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The FDA recently authorized two new, home antigen tests (from Roche and Siemens). We evaluated the data for each. Find out how they compare to seven other antigen tests on the market, and see our Top Pick among antigen tests.

Some Foods Provide Less Calcium Than You Think

1/03/2022
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You may not be getting as much calcium from certain foods as you think due to natural compounds that reduce calcium absorption. Find out which foods are most affected in our Calcium Supplements Review. Also see our Top Picks for calcium supplements.

Vitamin D for Diabetic Nerve Pain?

1/03/2022
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Can vitamin D supplementation reduce nerve pain or other symptoms of peripheral neuropathy, such as numbness and tingling, in people with type 2 diabetes? See what a new study found in the Diabetes section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.

For information about other supplements that may help, see our answer to the question: Do any supplements, like Nervive, help with nerve pain, like sciatica or diabetic neuropathy?

Caution With Stinging Nettle

1/03/2022
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Stinging nettle is promoted to reduce seasonal allergies and is a common ingredient in prostate supplements. Rarely, however, it may cause breast changes in both men and women, as was recently reported. Get the details in our updated article about Supplements for Seasonal Allergies. Also see the Concerns and Cautions section of our Prostate Supplements Review.

Rapid, Home PCR Tests Compared

1/06/2022
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Should you use a home PCR test for COVID-19 instead of a home antigen test? Find out and learn which of three authorized home PCR tests is our Top Pick.

Testing After Isolation?

1/06/2022
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The CDC and American Medical Association have differing views on whether you should test negative before ending isolation due to COVID-19 infection.

Omicron Symptoms and Testing

1/06/2022
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Vaccination Efficacy Against Omicron

1/06/2022
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Omicron v. Delta Hospitalization

1/06/2022
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Find out how Omicron infection compares to Delta in terms of the risk of hospitalization and death, based on recent data.

Booster Expansion

1/06/2022
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Airocide APS-200 Air Purifier Review

1/06/2022
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We’ve added a review of the Airocide APS-200 Air Purifier to our reviews of nearly 60 air purifiers. See which devices we recommend and which we don’t as well as our Top Picks based on room size.

Bacteria Build-up in Water Filters?

1/06/2022
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Water filter pitchers help remove contaminants and unpleasant taste from water, but can the filters harbor illness-causing bacteria? Find out in the ConsumerTips section of our Water Filter Pitchers Review. Also see our Top Picks among water filter pitchers.

Booster After COVID?

1/10/2022
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Find out if you should get a booster after getting COVID.

Fourth Dose for Immunocompromised Individuals

1/10/2022
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Moderna Wait Time Reduced

1/10/2022
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The waiting time before getting a Moderna booster has been reduced from six months. See the latest recommendations.

COVID-19 and Menstrual Cycles

1/10/2022
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Do COVID-19 vaccines affect menstrual cycles? Find out what the latest research shows.

Supplement for Thinning Hair?

1/10/2022
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A reader asked if taking Hair La Vie Clinical Formula can help with thinning hair. Find out in our updated article about Supplements for Hair Loss.

Taking Vitamin K With Vitamin D?

1/10/2022
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Is it necessary to take vitamin K when taking vitamin D? Find out in our updated answer to the question: Do you need to take vitamin K when taking vitamin D?

Soy Versus Whey Protein

1/10/2022
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Can soy protein help increase muscle mass and strength as well as the same amount of whey protein? See what a recent study showed in the Soy section of our Protein Powders and Drinks Review, which includes comparisons of whey, casein, soy, rice, pea and other forms of protein. Also see our Top Picks among protein supplements.

Ginkgo and Cistanche for Chronic Fatigue Syndrome?

1/10/2022
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Does supplementing with ginkgo and cistanche extracts help reduce symptoms of chronic fatigue syndrome? See what a recent study showed in our updated answer to the question: Which supplements help to improve energy and decrease fatigue?

Magnesium for Lowering Blood Pressure?

1/13/2022
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The FDA recently allowed supplements and foods that provide magnesium to make a claim regarding blood pressure reduction. But there is more to the story. Get the details in the What It Does section of the Magnesium Supplements Review. Also see our Top Picks among magnesium supplements.

Curcumin for Knee Pain?

1/13/2022
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Can curcumin reduce knee pain and improve function in people with osteoarthritis? See what a recent study found in the Osteoarthritis section of our Turmeric and Curcumin Supplements and Spices Review. Also see our Top Picks among turmeric and curcumin supplements.

Liver Injury With Reishi

1/13/2022
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Although very rare, liver injury has occurred in people taking reishi mushroom. Learn more, including details of a recent report, in the Concerns and Cautions section of our Reishi Mushroom Supplements Review.

Does Vitamin K2 Reduce Artery Calcification?

1/13/2022
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In response to communications from several readers about the role of vitamin K2 supplementation in reducing artery calcification, we added information this week to our answer to the question: Do you need to take vitamin K when taking vitamin D?

Rapid Antigen Testing for Omicron

1/13/2022
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Mouth v. Nose Swabs for COVID Antigen Testing

1/13/2022
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Some evidence suggests that samples from the mouth or throat may be better than from the nose but the FDA advises against this with current antigen tests.

At-Home COVID Tests Without Charge

1/13/2022
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Find out where to get COVID tests without charge in your area and how to get reimbursed for buying at-home antigen tests (which starts tomorrow).

Moderna Effectiveness Against Omicron

1/13/2022
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Find out how effective the Moderna vaccine and booster is against infection with the Omicron variant, and how this decreases over time, according to recent analyses.

Withholding Immunosuppressive Drugs Boosts Immune Response to Vaccine

1/13/2022
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Temporarily withholding an immunosuppressive drug before and after an mRNA vaccine can boost immune response, according to a recent study.

Vaccine Dosage for Individuals with Cancer

1/13/2022
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Some people being treated for cancer may benefit from three, rather than two, initial vaccine doses, according to a recent study.

Which Vaccine Booster is Best?

1/17/2022
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Is the Pfizer or Moderna booster better at protecting against symptomatic Omicron infection? See what new data shows.

Probiotics for COVID-19 Symptoms?

1/17/2022
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Can a probiotic help resolve COVID-19 symptoms? Learn what a recent study showed in the COVID-19 section of our Probiotic Supplements Review.

Colzer 142C Air Purifier Review

1/17/2022
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We’ve added a review of the Colzer 142C Air Purifier to our reviews of 60 air purifiers. See which devices we recommend and which we don't, and our Top Picks for air purifiers based on room size.

B-12 Vitamin Deficiency and Darkening of the Skin

1/17/2022
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Low levels of vitamin B-12 can cause darkening of the skin, as evidenced in a recent case. Get the details and learn about other symptoms of B-12 deficiency in our B Vitamin Supplements Review. Also, see our Top Picks among B-12 supplements.

Curcumin After Knee Surgery?

1/17/2022
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Does supplementing with curcumin after knee surgery reduce pain? See what a recent study found in the Osteoarthritis section of the Turmeric and Curcumin Supplements and Spices Review. Also see our Top Picks for curcumin and turmeric.

Krill Omega-3s to Lower Triglycerides?

1/17/2022
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Does taking krill-based omega-3s help lower high triglycerides? Find out what a recent analysis showed in the Krill oil section of our Fish Oil Supplements Review. Also, see our Top Picks for krill oil.

Melatonin, Sleep & Nighttime Asthma

1/20/2022
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There is some concern about the use of melatonin among people with nighttime asthma. Get the facts in the Concerns and Cautions section of our Melatonin Supplements Review.

New Top Picks for Antigen Tests

1/20/2022
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We have a new Top Pick among antigen tests based on superior performance in detecting the Omicron variant in a recent evaluation – and it’s also inexpensive.

Rapid COVID-19 Tests At No Charge

1/20/2022
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People in the U.S. can now order 4 at-home rapid COVID-19 tests at no charge. Get the details.

New N95 Top Pick

1/20/2022
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We evaluated two more N95s masks, and one is a new Top Pick. Get the details in our article about Finding the Best Masks.

Also see our Top Pick among KN95 masks.

CDC Mask Guidelines

1/20/2022
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Be aware that, this week, the CDC advised that properly fitted N95 and KN95 respirators provide the highest level of protection against COVID. So it’s best to use these masks in place of cloth masks. It was also announced that N95s will soon be made available at no charge at community centers and retail pharmacies across the U.S. Get the details.

Is Epstein-Barr Virus Reactivated By COVID-19 Vaccines?

1/20/2022
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Supplement Interactions with Paxlovid

1/20/2022
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Certain supplements may interact with Paxlovid, the antiviral pill authorized for COVID-19 patients at high risk for severe disease. Find out which may interact.

Backpack Extract for ADHD?

1/20/2022
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Can taking bacopa extract improve symptoms of ADHD in children? Find out what a recent study suggests in our answer to the question: Does Bacopa extract improve memory, mood, or sleep? Is it safe?

Seller of Carnitine and Alpha Lipoic Acid Warned by FDA

1/20/2022
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FDA Warns Seller of Carnitine and Alpha Lipoic Acid

Eggs and Heart Risk

1/24/2022
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Does eating one or two eggs daily increase the risk of heart attack? Find out what recent studies suggest in the Concerns and Cautions section of our Choline Supplements Review (eggs contain choline). Also see our Top Picks among choline supplements.

Probiotic to Lower Cholesterol?

1/24/2022
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Can taking a probiotic lower elevated cholesterol levels? See what a new study found in the Cholesterol-lowering section of our Probiotics Supplements Review. Also see our Top Picks for probiotics.

For other approaches to lowering cholesterol, see our answer to the question: Which supplements or foods can help lower cholesterol and keep my heart healthy?

Goji Berries for the Eyes?

1/24/2022
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Goji berries are a good source of zeaxanthin, an anti-oxidant compound that, like lutein, may help protect the retina of eye. But does eating goji berries improve a measure of macular health (macular optical density) or improve vision? See what recent research showed in the Getting Lutein and Zeaxanthin from Food section of our Vision Supplements Review. Also see our Top Picks among vision supplements.

Urolithin-A – A New Supplement for the Elderly?

1/24/2022
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Urolithin-A can improve the function of mitochondria (the “powerhouses” inside our cells). Mitochondrial dysfunction has been linked with various age-related diseases. Find out if taking urolithin-A improved muscle function in recent study of elderly people in our new article: Does urolithin A reduce age-related muscle decline?

Booster Protection Against Omicron

1/24/2022
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Timing Vaccines Around COVID Drugs

1/24/2022
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Learn how long you need to delay vaccination after receiving drug therapy for COVID-19, including antivirals (such as remdesivir and Paxlovid) and antibody treatments.

Air Purifiers

1/24/2022
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We’ve added a review of the Smart Health S air purifier (also called the Sqair Air Purifier) to our list of more than 60 devices. See which we recommend, which we don't, and our Top Picks for air purifiers based on room size.

How Good Are COVID Tests From the Government?

1/27/2022
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Readers have started to receive rapid antigen tests, such as iHealth, from the government. See how this compares to other antigen tests and our Top Picks.

Let us know which test you received by mail from the U.S. government – we'll review it if we haven't already.

If you need to order tests at no charge, here's how.

What's BA.2?

1/27/2022
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A subvariant of Omicron called BA.2 has been identified in the U.S. Find out if it's more contagious or causes more severe disease.

CBD To Reduce COVID Risk?

1/27/2022
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Use of a prescription formula was associated with lower risk of COVID-19 infection in a recent analysis, but there are important caveats to this finding. Get the details in the Colds, Flu, and Viral Infections section of our Review.

Wait for Omicron Booster?

1/27/2022
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If you haven’t been boosted, find out if you should wait for an Omicron-specific booster.

Myocarditis After Vaccination

1/27/2022
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A new study provided more data about the risk of myocarditis after vaccination with the Pfizer and Moderna vaccines.

Symptoms of Vitamin A Deficiency

1/27/2022
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Although not common, be aware of signs of vitamin A deficiency involving the eyes, skin, and nails, as exemplified by a recent case. Get the details (including medical conditions which can cause it) in the What It Does section of our Vitamin A Supplements Review. Also see our Top Picks among vitamin A supplements.

B-12 From Chlorella and Spirulina?

1/27/2022
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A reader asked if chlorella and spirulina are good sources of B-12. The answer is both "yes" and "no," as explained in our Greens and Whole Foods Powders and Pills Review, which includes our recent tests result and Top Picks for chlorella and spirulina supplements.

Booster Side Effects

1/31/2022
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Vitamin D & Autoimmune Disease

1/31/2022
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A major study suggests that supplementing with vitamin D may reduce the risk of some autoimmune diseases, such as rheumatoid arthritis. Fish oil may also have some benefit. But there are important caveats to the findings, and thyroid disease and psoriasis appear to be impacted. Use the above links for details.

Olive Oil Lowers Risk of Death

1/31/2022
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Regular consumption of olive oil was associated with reduced risk of death from heart disease, cancer, and Alzheimer’s disease in a large, long-term study – but only if replacing certain other foods. Get the details in the What It Does section of our Extra Virgin Olive Oil Review. Also see our Top Picks among extra virgin olive oils.

Vaccines, Blood Pressure, and Thyroid Symptoms

1/31/2022
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Reinfection From Omicron

1/31/2022
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Be aware that if you had COVID-19 before Omicron, you’re a lot more likely to get reinfected now.

Omicron Vaccines

1/31/2022
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Omicron BA.2 Variant

1/31/2022
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Air Purifier for Cars?

1/31/2022
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We reviewed the PuraShield Mini Air Purifier, which is promoted to purify the air inside cars, SUVs, and minivans. Find out how we rated this device, learn which others recommend, which we don't, and our Top Picks for air purifiers based on room size.

Accuracy of Pulse Oximeters

1/31/2022
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Find out how pulse oximeter readings may differ if a person is white, Black, or of Asian descent. Also see our Top Pick among home pulse oximeters.

February

Risk of Too Much B-12

2/04/2022
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It’s easy to get way more vitamin B-12 than one needs from supplements. Unfortunately, high blood levels of B-12 are being linked to higher risks of death and disease, as shown in a recent U.S. study. Get the details in the Upper Limit for B-12 section of our B Vitamin Supplements Review. Also, see our Top Pick among B-12 supplements.

Vitamin D & Death From COVID

2/04/2022
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Some research suggests that low blood levels of vitamin D increase the risk of death from COVID, but a new study suggests that high levels also increase risk. Get the details in the COVID section of our Vitamin D Supplements Review.

Also see our answer to the question: Do any supplements help with the coronavirus (COVID-19)?

Shelf-Lives of Home COVID-19 Antigen Tests

2/04/2022
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If you’re storing a test for future use, be aware that shelf-lives range from just 5 ½ months to 12 months from time of manufacture. See how shelf-lives of popular brands compare.

Also see our Top Picks among antigen tests based on their accuracy and other features.

Receiving Tests in Extreme Temperatures

2/04/2022
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Can you use an antigen test delivered in below-freezing temperatures? Find out.

Efficacy of Throat Swabs for Antigen Tests

2/04/2022
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Does including a throat swab improve the accuracy of antigen tests? See what a recent study showed.

Vaccination and Omicron BA.2

2/04/2022
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Vaccination may reduce the spread of the new Omicron BA.2 subvariant, according to a recent study.

Moderna Vaccine Receives FDA Approval

2/04/2022
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The Moderna vaccine has been approved by the FDA in addition to its original emergency use authorization. Find out what this means.

Tart Cherry for Memory?

2/08/2022
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Can tart cherry juice improve memory and attention, or reduce fatigue, in middle-aged men and women? See what a new study found, as well as other potential uses in our updated article about the Health Benefits of Tart Cherry Juice.

L-Theanine for Stress?

2/08/2022
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Can L-theanine supplementation reduce stress during demanding tasks? See the latest evidence in the What It Does section of our L-Theanine Supplements Review.

Do Light Boxes Work?

2/08/2022
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Light boxes are commonly promoted for seasonal affective disorder (SAD) but do they help treat circadian rhythm disorders such as jet lag? Find out in our updated Answer about light boxes which includes a list of light boxes that we recommend and side effects of light therapy.

What To Do If You Test Negative, or Positive

2/08/2022
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We’ve summarized the latest information about when to use a home test and what to do if you get a negative, or a positive result. It’s all in the Antigen Tests section of our comprehensive article about testing for COVID-19.

Antigen Testing for Omicron

2/08/2022
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Keep in mind that home antigen tests are most accurate in detecting Omicron after symptoms have started, as shown in recent studies. Get the details.

At-Home COVID Testing for Medicare Beneficiaries

2/08/2022
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In early spring of 2022, eligible Medicare beneficiaries will be able to receive 8 at-home rapid tests per month at no charge. Get the details.

Booster and Omicron Hospitalization

2/08/2022
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Being boosted vastly reduces the chance of being hospitalized with Omicron. See the most recent data.

Third Shot for J&J Vaccine

2/08/2022
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Reducing Acrylamide in Cookies

2/11/2022
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Acrylamide is a neurotoxin and probable cancer-causing agent that can form when cooking or baking certain foods at high temperatures. Find out how to reduce acrylamide formation when baking cookies in our updated article about Acrylamide in Foods, which also includes information about acrylamide in coffee, chocolate, potatoes and other foods.

Black Garlic for Lowering Cholesterol?

2/11/2022
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Did aged black garlic extract help lower high cholesterol in a recent study? Find out in our Black Garlic section of our Garlic Supplements Review.

Also see our answer to the question: Which supplements or foods help lower cholesterol and keep my heart healthy?

Omega-3s for Fall Prevention?

2/11/2022
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Can omega-3 supplementation help reduce falls in older men and women? See what a study found in the Muscle, Strength and Falls section of our Fish Oil/Omega-3 Fatty Acid Supplements Review. Also, see our Top Picks among fish oil supplements.

Vitamin D & Infant Bone Density

2/11/2022
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Does vitamin D supplementation improve bone density in breast-fed infants? Find out what a recent study suggests in the Bones and Fractures section of our Vitamin D Supplements Review.

Vitamin D & COVID

2/11/2022
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What vitamin D levels are associated with the lowest risk of getting severe COVID?

Does raising vitamin D levels shorten the duration of COVID symptoms? See what a recent study found.

Also see our Top Picks for vitamin D.

Melatonin & COVID

2/11/2022
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Can supplementing with melatonin help prevent death among people hospitalized with COVID-19? See what a recent study found in the COVID-19 section of our Melatonin Supplements Review, which includes our Top Picks for melatonin.

Also see our answer to the question: Do any supplements help with COVID-19?

Omicron Antibodies Against Other Variants

2/11/2022
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Does infection with Omicron provide protection in the form of antibodies, against earlier other variants?

B-12 Deficiency and GI Symptoms

2/14/2022
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Severe vitamin B-12 deficiency can cause a range of gastrointestinal symptoms, as highlighted in a recent case. Learn about these and other symptoms of B-12 deficiency in the B-12 section of our B Vitamin Supplements Review. Also see our Top Picks for vitamin B-12 and other B vitamin supplements.

NMN for Better Sleep?

2/14/2022
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Can nicotinamide mononucleotide (NMN) improve sleep and reduce daytime drowsiness? See what a new study found in the What It Does section of our NAD Booster Supplements Review. Also see our Top Picks among products, including NMN, NAD+/NADH, and nicotinamide riboside.

See our answer to the question: Which supplements can help me sleep and which cause insomnia?

Peppermint For Acid Reflux?

2/14/2022
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Does peppermint oil improve or worsen acid reflux? Find out in our updated answer about Supplements and Acid Reflux.

Hydroxyapatite for Cavities?

2/14/2022
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A form of hydroxyapatite was shown to prevent cavities as well as standard fluoride toothpaste in a recent study. But it’s not actually a substitute for fluoride. Find out why in our updated answer to the question: Which ingredients should toothpaste contain, and which should be avoided?

Boosting Vaccine Response

2/15/2022
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Boosters for Immunocompromised Individuals

2/15/2022
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For immunocompromised people: See new guidance on when to get a booster (i.e., 4th dose) if you received the Pfizer or Moderna vaccines or if you initially received the J&J vaccine.

COVID Vaccines and Monoclonal Antibody Therapy

2/15/2022
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For people who received monoclonal antibody therapy: Find out if you need to delay vaccinations.

New COVID Treatment

2/15/2022
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An antibody treatment that works against Omicron infection was recently authorized for people at high risk of progression to severe disease, but it needs to be used early. Learn more about it and other treatments in our answer about COVID treatments.

Help for Dizziness When Standing

2/18/2022
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Many people experience lightheadedness when standing up due to a temporary drop in blood pressure but certain techniques may help, according to a new study. Get the details in our new article How to Reduce Lightheadedness and Dizziness When Standing Up (Orthostatic Hypotension).

Fish Oil for Fatty Liver?

2/18/2022
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Can fish oil supplementation help reduce liver fat and fibrosis in people with non-alcoholic fatty liver disease (NAFLD)? Find out what a recent study suggests in the Liver Disease section of our Fish Oil Supplements Review.

Also see our article about Supplements for Fatty Liver Disease.

Do Vitamin D & Whey Protein Help After a Stroke?

2/18/2022
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Can taking vitamin D and whey protein after a stroke help improve muscle strength and physical function? Find out what a recent study suggests in the Muscle, balance and falls section of our Vitamin D Supplements Review.

Also see our article about supplements and stroke risk.

More Deodorants and Antiperspirants Recalled Due to Benzene

2/18/2022
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Four popular aerosol deodorants and antiperspirants were recently found to be contaminated with the toxic chemical benzene and have been recalled, adding to a growing list. Get the details in our updated answer to the question: Which deodorants and antiperspirants are contaminated with benzene and which are not?

Antibody Treatment Effectiveness Against BA.2 Variant

2/18/2022
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Although two monoclonal antibody treatments (bebtelovimab and sotrovimab) appear to be effective against the Omicron variant, one may have reduced activity against the BA.2 variant.

Myocarditis After COVID Boosters

2/18/2022
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Myocarditis appears to be much less common with boosters than with 2nd doses of Pfizer or Moderna vaccines according to new data.

Coffee and Heart Health

2/23/2022
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Drinking moderate amounts of one type of coffee, but not another, was linked to a reduced risk of heart attack and stroke in a recent analysis. Get the details in our updated article about Coffee and Health.

Boswellia for Knee Pain?

2/23/2022
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Can Boswellia extract reduce knee pain and stiffness in people with knee osteoarthritis? See what a recent study found in the What It Does section of our Joint Health Supplements Review. Also see our Top Picks among products containing Boswellia, glucosamine, chondroitin, and/or MSM.

See our answer to the question: Which supplements can help with arthritis?

Leucine for Muscle Loss?

2/23/2022
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Did leucine supplementation improve physical function in people ages 70 and older with age-related muscle loss in a recent study? Find out in the Branched-chain amino acids (BCAAs) section of our Muscle & Workout Supplements Review.

Also see our answer to the question: Which vitamins and minerals should someone over 70 take?

Benefit of a Second Booster?

2/23/2022
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Does getting a second booster reduce the risk of Omicron? See what a recent study found.

Vaccination After COVID Infection

2/23/2022
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Getting vaccinated after COVID-19 appears to drastically reduce the risk of reinfection, according to a recent study.

Vitamin D for COVID?

2/23/2022
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Does high-dose vitamin D help people hospitalized with COVID? See what a recent study showed in the COVID section of our Vitamin D Supplements Review.

Also see our answer to the question: Do any supplements help with the coronavirus (COVID-19)?

Paxlovid for COVID-19?

2/23/2022
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How well does Paxlovid reduce risk of hospitalization or death due to COVID-19 in people who are unvaccinated? Find out in our updated answer about COVID Treatments.

Mercury Levels in Tuna

2/25/2022
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A CL member asked Wild Planet to comment on the mercury levels ConsumerLab found in its tuna products. See the response in the Update to our Tuna, Salmon & Sardines Review. Also see our Top Picks among canned tuna, salmon, and sardines.

Magnesium for Insomnia?

2/25/2022
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Can magnesium supplementation improve sleep in people with insomnia? Find out what research suggests in the What It Does section of our Magnesium Supplements Review. Also see our Top Picks among magnesium supplements.

See our answer to the question: Which supplements can help me sleep and which cause insomnia?

HMB for Muscle Loss in Older People?

2/25/2022
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Can HMB supplementation improve muscle mass and strength in older people? Find out what research suggests, including who is most likely to benefit, in the HMB section of our Muscle & Workout Supplements Review.

Omicron Reinfection

2/25/2022
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Can people infected by Omicron (BA.1) get reinfected by the Omicron subvariant, BA.2?

Delaying Second Vaccine Shots

2/25/2022
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Some people may now consider delaying the second shot of Pfizer or Moderna until 8 weeks after their first shot. But not everyone should wait to get the second shot. Get the details.

Zinc & COVID

2/25/2022
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Can taking zinc and vitamin C after being diagnosed with COVID-19 boost antibody production? Find out what a recent study found in the COVID section of our Zinc Supplements Review.

Also see our article about Supplements for COVID.

Sotrovimab Treatment

2/25/2022
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The FDA has limited the use of sotrovimab. Get the details.

March

Heart Risk With Fizzy Pills and Powders

3/01/2022
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Be aware that supplements that "fizz" in water may be exposing you to potentially dangerous amounts of sodium. This was associated with higher risk of heart attack, stroke, or heart failure in a recent study.

Does Boosting Protein Intake Help?

3/01/2022
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Can getting extra protein boost physical function or improve body composition in older people? See what a recent study showed in the Building and maintaining muscle mass section of our Protein Supplements Review. Also see our Top Picks among protein supplements.

Glucosamine and Depression

3/01/2022
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Can taking glucosamine improve, or cause, depression? Find out in the Glucosamine and Chondroitin section of our Joint Health Supplements Review. Also see our Top Picks among joint health supplements.

Also see our answer to the question: What are the best supplements for depression and anxiety?

Melatonin and Heart Palpitations?

3/01/2022
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Can taking melatonin cause heart palpitations? Find out in the Concerns and Cautions section of our Melatonin Supplements Review. Also see our Top Pick for melatonin.

Check Your Area’s COVID Risk

3/01/2022
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You can now check if your area in the U.S. is at High, Medium, or Low risk for COVID and the CDC's mask recommendations for your area. Check your community's COVID-19 level.

Melatonin to Prevent COVID?

3/01/2022
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Does taking melatonin help prevent COVID-19? Find out what a study found in the COVID-19 section of our Melatonin Supplements Review.

Also see our article about Supplements for COVID.

COVID-19 and Hair Loss?

3/01/2022
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Can COVID-19 cause hair loss? Find out in How to You Take Care of Yourself After You’ve Had COVID-19.

Avocado Compounds for Osteoarthritis?

3/04/2022
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Compounds extracted from avocado and soy, known as unsaponifiables or ASUs, have been promoted to treat osteoarthritis of the knees and hips. But do they work? See what a recent study found in the What It Does section of our Avocado Oil Review.

Also see our answer to the question: Which supplements can help with arthritis?

Protein Shake for Weight Management?

3/04/2022
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Can drinking a protein and fiber shake improve weight management in overweight people when used along with diet and exercise? Find out what a recent study found in the Weight management section of our Protein Supplements Review. Also see our Top Picks among protein powders, shakes and drinks.

Less Mercury in Some Tuna?

3/04/2022
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Do pole & line or troll-caught tuna contain lower concentrations of mercury than traditional-catch tuna? Find out in the ConsumerTips section of our Tuna, Salmon & Sardines Review. Also see our Top Picks among tuna products.

Probiotics: Single or Multi-Strain?

3/04/2022
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Are multi-strain probiotics more effective than single-strain probiotics? Find out what a recent study showed in the Single-strain or multi-strain? section of our Probiotics Supplements Review. Also see our Top Picks for probiotics based on intended use.

Whey Protein From a Lab

3/04/2022
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Laboratory-produced whey protein is now hitting the market. How does it differ from milk-based whey protein? Find out in the ConsumerTips section of our Protein Supplements Review. Also, see our Top Picks among protein powders, shakes and drinks.

Home Tests Recalled

3/04/2022
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Versions of some popular home antigen tests were not authorized for sale in the U.S. but were distributed in the U.S. and are being recalled. These versions look a little different from the authorized tests. See what to look for in our Update. Also see our Top Picks among home antigen tests.

Caution: Many Still Positive After 5 Day Isolation

3/04/2022
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People with COVID must isolate for 5 days, but many are positive on antigen tests for up to 9 days. Find out who is most at-risk for this, in our updated answer about COVID Tests.

Brazil Nuts for Weight Management?

3/08/2022
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Brazil nuts have been touted to improve weight loss. See if a recent study found that to be true in our article about the Health Effects of Brazil Nuts.

Serrapeptase For Lowering Cholesterol?

3/08/2022
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Does supplementing with serrapeptase help lower cholesterol? Find out in our answer to the question: What are the health benefits of serrapeptase?

Safer Facial Moisturizers

3/08/2022
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Sunscreen ingredients in many facial moisturizers are not known to be safe. See our list of those that are potentially problematic and those that are safer options.

More Home Tests Without Cost

3/08/2022
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Omicron Reinfection

3/08/2022
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Find out if infection with one Omicron variant (BA.1 or BA.2) protects you from getting reinfected with the other.

Is 5-Day Isolation Enough?

3/08/2022
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More evidence suggests that isolating after a positive COVID-19 antigen test result for just 5 days may be too short.

Vitamin K and Sleep

3/11/2022
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Can taking vitamin K make it more difficult to sleep? Find out what research suggests in the Concerns and Cautions section of our Vitamin K Supplements Review.

Also see our answer to the question: What are the best supplements for insomnia? Are there any supplements that interfere with sleep?

Green Tea and Colon Polyps

3/11/2022
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Can taking green tea extract reduce the recurrence colon polyps? See what a recent study found in the What It Does section of our Green Tea Review. Also see our Top Picks among green tea extracts, tea bags, loose tea, and matcha powders.

See our answer to the question: Which supplements help reduce the risk of colorectal cancer?

How Vitamin A Deficiency Can Affect the Eyes

3/11/2022
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Vitamin A deficiency was linked to eye floaters and loss of peripheral vision in a recently reported case. Get the details, and learn about other symptoms of vitamin A deficiency, in the What It Does section of our Vitamin A Supplements Review. Also see our Top Picks among vitamin A supplements.

See our answer to the question: Do any supplements help prevent or reduce eye floaters?

Olive Leaf Extract for Herpes?

3/11/2022
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Does olive leaf extract taken orally or applied topically help heal cold sores or genital herpes? Find out in our article about the Health Benefits of Olive Leaf Extract.

Probiotics to Lower Marker of Heart Attack Risk?

3/15/2022
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Some probiotics have been shown to modestly lower high cholesterol levels. Can they also lower levels of apolipoprotein B (apoB), a strong predictor of heart attack risk? See what recent research shows in the What It Does section of our Probiotics Supplements Review.

Fish Oil and Heart Failure Risk?

3/15/2022
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Can supplementing with fish oil reduce cardiovascular risk factors in people at high risk for heart failure? Find out what a recent study showed in the Heart Attack and Stroke section of our Fish and Marine Oil Supplements Review. Also see our Top Picks among fish oil supplements.

How Stevia Products Differ

3/15/2022
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Be aware that stevia products typically include other sweeteners and differing stevia compounds that affect their flavor and caloric content. Get the details in our updated article about stevia and its health benefits and safety.

Unusual Cravings Can Be a Sign of Iron Deficiency

3/18/2022
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The urge to chew on ice, or consume or smell unusual substances, can be a sign of iron deficiency, as highlighted by a recently reported case. Get the details and learn about other symptoms of iron deficiency, in the What It Does section of our Iron Supplements Review. Also see our Top Picks among iron supplements.

Alzheimer's Disease: Does MCT Oil Help?

3/18/2022
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Can medium-chain triglycerides slow cognitive decline among people with Alzheimer’s disease? Find out what a recent study showed in the Cognitive impairment and Alzheimer's disease section of our Coconut Oil and MCT Oil Review.

Also see our answer to the question: Do any supplements or foods help with brain function, like memory and cognition?

Iodine Pills for Radiation Protection

3/18/2022
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Due to concerns relating to the safety of nuclear reactors and potential use of nuclear weapons in the war in Ukraine, demand for radioprotective iodine products has jumped.

Potassium iodide and potassium iodate can help protect the thyroid from the effects of radioactive iodine from the air, water, and foods after a nuclear event. But who should be taking these products, when should they be taken, and how much should be taken?

Find out in our review of Potassium Iodide and Iodate Radioprotective Pills, and see our Top Picks among products (and where to currently get them).

Colostrum

3/18/2022
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In response to our recent article about bovine colostrum, we received and answered the following questions this week:

Should bovine colostrum be used with probiotics to improve gut health?

Does collecting bovine colostrum for use by people reduce the colostrum supply for newborn calves?

Stevia

3/18/2022
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Based on questions from our members, we've updated our CL Answer about stevia extract to answer the following:

Which commercially available stevia products do not contain "fillers" such as dextrose or erythritol?

Do any stevia products have a less bitter aftertaste?

Which stevia product without fillers is CL's Top Pick?

Blood Type & Long COVID

3/18/2022
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People with a particular blood type appear more likely to experience long COVID, according to a recent study. Get the details in our answer to the question: How Should You Take Care of Yourself After You've Had COVID-19?

Best COVID Vaccine for Breast-Feeding Women?

3/18/2022
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Multivitamins & Cancer Risk

3/22/2022
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Did a popular multivitamin for seniors reduce the risk of cancer diagnosis in a three-year-study? Find out in the Cancer Risk section of our Multivitamin and Multimineral Supplements Review. Also see our Top Picks among multivitamins.

CoQ10 for Statin Side Effects?

3/22/2022
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Does CoQ10 reduce muscle side effects of statin drugs (used to lower cholesterol)? See what a recent study found in the What It Does section of our CoQ10 Supplements Review.

CoQ10 Absorption

3/22/2022
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Is taking CoQ10 in an oil-containing softgel better than taking plain CoQ10? See our take on what was reported in a recent study. Also, see our Top Picks for CoQ10.

Does Cocoa Lower Risk of Cardiovascular Death?

3/22/2022
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Results were recently published for the largest study to-date of cocoa extract given to older men and women. See if it helped lower the risk of cardiovascular disease and death in the Cardiovascular section of our Dark Chocolate & Cocoa Review. Also see our Top Picks among dark chocolate bars, cocoa powders, nibs, and supplements.

Fish Oil: Cognitive Benefit in Healthy People?

3/22/2022
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Does fish oil supplementation improve cognition in healthy people? See what a recent study showed in the Memory Enhancement in Healthy Individuals section of our Omega-3 Fatty Acid Supplements Review.

Also see our answer to the question: Do any supplements or foods help with brain function, like memory and cognition?

Vitamin D in Fish

3/22/2022
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Which fish contain the highest levels of vitamin D, and how does cooking effect these levels? Find out what a recent study showed in the What to Consider When Buying section of our Vitamin D Supplements Review.

Also see our Review of Canned Fish for information about levels of vitamin D in canned fish.

COVID Vaccine: Will There Be a Second Booster?

3/22/2022
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The FDA has received requests from Pfizer and Moderna for a 2nd booster. Find out who might be eligible for a 2nd booster and when.

Vitamin D & COVID

3/22/2022
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Glutathione for Skin Lightening?

3/22/2022
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Are glutathione supplements or topical glutathione creams effective for skin lightening? Find out what research has shown in our updated answer to the question: Do glutathione supplements help prevent aging or other conditions?

Resveratrol and Anemia

3/25/2022
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A CL member recently reported developing mild iron deficiency anemia after use of a popular resveratrol supplement. Find out what research suggests about this connection in the Concerns and Cautions section of our Resveratrol review.

Psyllium for Uncontrolled Bowel Movements

3/25/2022
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Psyllium is commonly used as a laxative, but did you know it can also help people with uncontrolled bowel movements (fecal incontinence), as noted in recent, expert guidelines? Get the details in the What It Does section of our Psyllium Fiber Supplements Review. Also see our Top Picks among psyllium supplements.

Hydroxycitrate for Kidney Stones?

3/25/2022
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Can supplementing with hydroxycitrate (HCA) help prevent or treat kidney stones? Find out what research shows in the What It Does section of our Garcinia Cambogia Review.

Also see our answer to the question: Can any supplements reduce or increase the risk of kidney stones?

Probiotic for Oral Health?

3/25/2022
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Can a probiotic lozenge decrease cavity risk, tooth plaque, and/or staining? See what the latest research shows in the What It Does section of our Probiotic Supplements Review.

B-12 Deficiency in Infants

3/25/2022
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Although not common, B-12 deficiency can occur in infants. A recent study showed common symptoms and risk factors. Learn about B-12 deficiency in infants as well as in men and women in the B-12 section of our B Vitamin Supplements Review.

Some Potatoes Form Less Toxin

3/25/2022
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When fried, roasted, or baked, potatoes can contain relatively large amounts of acrylamide – a neurotoxin and potential cancer-causing agent – but the amount depends on the type of potato, according to a recent study. Get the details in our updated answer about acrylamide in foods.

Safer Sunscreens List Expanded

3/25/2022
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Some sunscreens and facial moisturizers contain potentially problematic compounds. In response to questions from readers, we reviewed and added six more products (from brands such as Cetaphil and Neutrogena) to our list of sunscreens with safer ingredients. (The newly added products are highlighted in yellow in our list).

Multivitamin for Diabetes

3/25/2022
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We learned this week that our Top Pick multivitamin for people with diabetes has been discontinued. See our Update about this and alternatives. Also see our other Top Picks among multivitamins.

No-Cost COVID Vaccine Eligibility Ending?

3/25/2022
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Take note: After April 4, some people in the U.S. may no longer be able to get a COVID vaccine without paying out of pocket.

Second Booster Covered for Some

3/25/2022
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If a second booster is authorized in the U.S., the government may only have the resources to provide it to a segment of the population. See who will likely be covered.

Acrylamide in Sweet Potato

3/29/2022
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Find out how much acrylamide is in sweet potato chips compared to regular (white) potato chips.

Learn ways to create less acrylamide when cooking.

Lip Balms and Glosses

3/29/2022
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We reviewed and added 11 lip balms and glosses from brands like Burt's Bees, Colorscience, and Eos to our list of sunscreen products with safe ingredients.

Collagen for Joint Discomfort?

3/29/2022
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Can supplementing with low-dose collagen reduce joint pain in healthy older adults? Find out what a recent study showed in the Joint Pain section of our Collagen Supplements Review. Also see our Top Picks for collagen.

Mulberry Leaf for Diabetes?

3/29/2022
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Can taking mulberry leaf extract reduce blood sugar or improve insulin resistance in people with type 2 diabetes? Find out what a recent study suggests in our updated answer to the question: Which supplements and foods can help lower or control my blood sugar?

Test Before the Holidays

3/29/2022
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If you will be getting together with family and friends during upcoming holidays, consider at-home antigen tests beforehand. Every home in the U.S. is eligible to get 2 sets of 4 at-?home tests delivered, if not already ordered. Get the details.

Benefit of a Second Booster

3/29/2022
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Second boosters may significantly reduce the risk of severe COVID-19 in older people, according to a recent study.

Quinine for Leg Cramps?

3/31/2022
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Is quinine (a compound in tonic water) helpful and safe for nighttime leg cramps? Find out in our updated answer about supplements for leg cramps and muscle pain.

Spinach for Muscle Strength?

3/31/2022
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Can supplementing with spinach extract improve muscle strength in older adults? Find out what a recent study showed in the What They Do section of our Greens and Whole Food Supplements Review. Also see our Top Picks among greens and whole foods products.

Doctor's Best Settlement & Refund

3/31/2022
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Doctor's Best is providing a partial refund to customers of its glucosamine supplements as part of a legal settlement. For details, see the Update to our Joint Supplements Review.

Safe Makeup Sunscreens

3/31/2022
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We’ve added nine makeup foundations to our lists of safe sunscreen products, which include dozens of regular sunscreens, facial moisturizers, and lip balms.

Questions About Second Booster

3/31/2022
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Now that a second booster is available for those 50 and over, see our answers to these important questions:

Should you get a second booster now or should you wait?

Should you choose Pfizer or Moderna for the second booster?

How to Get COVID Treatment Quickly

3/31/2022
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Antivirals work against COVID if given early. Some pharmacies can now give you antiviral medication without a prescription from your doctor if you test positive, saving valuable time. Learn how and find the location nearest you.

Autoimmune Risk?

3/31/2022
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New-onset autoimmune conditions have been reported after vaccination. Find out if this concern outweighs the benefits of vaccination.

April

Acrylamide in Olives

4/05/2022
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Some olives contain much higher amounts of acrylamide (a carcinogen) than others. Find out how California, Greek, and Spanish styles of olive differ in our updated answer to the question: What Is Acrylamide?

Mucus From Toothpaste?

4/05/2022
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Which ingredients in toothpaste may cause mucus to build up in your mouth after brushing? Find out in our updated answer to the question: Which ingredients should toothpaste contain, and which should be avoided?

Magnesium for Boosting Vitamin D

4/05/2022
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Did you know that supplementing with magnesium can help boost low vitamin D levels in some people? See what a recent study showed in the ConsumerTips section of our Vitamin D Supplements Review.

B-12 Deficiency Can Cause Reversible Cognitive Decline

4/05/2022
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Treating B-12 deficiency improved rapid cognitive decline and stopped hallucinations in an older man, according to a recent report. Get the details in the B-12 section of our B Vitamin Supplements Review. Also see our Top Picks for B-12 and other B vitamins.

Fish Oil for Mild Cognitive Impairment?

4/05/2022
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Can supplementing with DHA-rich fish oil help people with mild cognitive impairment? Find out what a recent study showed in our Fish Oil Supplements Review.

Also see our answer to the question: Do any supplements or foods help with brain function, like memory and cognition?

Fish Oil for Heart Failure?

4/05/2022
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Can fish oil reduce the risk of being hospitalized due to heart failure? See what a major study found in the Heart Disease and Stroke section of our Fish Oil Supplements Review. Also, see our Top Picks for fish oil.

Antiperspirants Recalled Due to Benzene

4/07/2022
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Two more popular antiperspirants have been recalled after they were found to contain the toxic chemical benzene. Get the details in our update to the question: Which deodorants and antiperspirants are contaminated with benzene and which are not?

Tooth Stains from Toothpaste?

4/07/2022
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Can a common ingredient in toothpaste cause tooth staining? Find out in our updated answer to the question: Which ingredients should toothpaste contain, and which should be avoided?

Acrylamide in Bread

4/07/2022
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Bread is a significant dietary source of acrylamide, but there are steps that can be taken to reduce the amount of this probable carcinogen. Get the details in our updated answer to the question: What is acrylamide?

Pickle Juice for Muscle Cramps?

4/07/2022
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Can drinking pickle juice help relieve muscle cramps and are there safety concerns? Find out in our updated article about Supplements for Muscle Cramps.

2nd Booster in Europe

4/08/2022
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Added Protection of a 2nd Booster

4/08/2022
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See the latest on the added protection of a 2nd booster.

Andrographis for COVID-19?

4/08/2022
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Despite early evidence suggesting a benefit, andrographis does not appear to help patients with COVID-19, according to a recent report. Get the details in our updated answer to the question: Do any supplements help with the coronavirus (COVID-19)?

Vitamin B-12 Deficiency and Dementia

4/08/2022
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Correcting B-12 deficiency may improve cognition in people with dementia, according to a recent study and case reports. Get the details in the Memory, Cognition, and Alzheimer’s Disease section of our B Vitamin Supplements Review.

Astaxanthin & Seafood Allergy

4/08/2022
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A member asked if people with seafood allergies can take astaxanthin supplements. Find out in the Concerns and Cautions section of our Astaxanthin Supplements Review.

Cardiovascular Concerns With L-Carnitine

4/08/2022
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L-carnitine supplementation may have negative cardiovascular effects, according to a recent study. Get the details in the Concerns and Cautions section of our Acetyl -L-Carnitine Review.

Second Booster Side Effects

4/12/2022
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Find out how the side effects of a second booster compare to those of the first booster and the initial vaccine series.

Relief for Knee Replacement Pain?

4/12/2022
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After knee replacement, can topical CBD reduce pain and pain medication use, or improve sleep? See what a recent study found in the Update in our Review.

Zinc Rash

4/12/2022
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Zinc supplementation can trigger an allergic skin rash in some people, as seen in a recent case report. Get the details in the Concerns and Cautions section of our Zinc Supplements Review.

Manganese for Tinnitus?

4/12/2022
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Can taking manganese help treat symptoms of tinnitus? Find out what research suggests in the Manganese section of our Multivitamin Supplements Review. Also see our answer to the question: Do any supplements or lifestyle changes reduce the symptoms of tinnitus?

DAO for Histamine Intolerance?

4/12/2022
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Can diamine oxidase (DAO) supplementation improve gastrointestinal symptoms of histamine intolerance? Find out what the most recent evidence suggests in our updated CL Answer about DAO for histamine intolerance.

Do You Need a Pulse Oximeter at Home?

4/14/2022
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When home with COVID, a recent study showed that actively monitoring for breathing symptoms may be as or more important than having a pulse oximeter. For details, see our article about pulse oximeters.

CoQ10 for Tinnitus?

4/15/2022
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Can CoQ10 supplementation reduce symptoms of tinnitus? Find out what research suggests in the What It Does section of our CoQ10 and Ubiquinol Supplements Review.

For information about other supplements for tinnitus, see our answer to the question: Do any supplements or lifestyle changes reduce the symptoms of tinnitus? Is it true that some supplements can cause tinnitus?

Theraworx for Nighttime Leg Cramps?

4/15/2022
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Does Theraworx, a topical homeopathic magnesium product, relieve nighttime leg cramps? See what a study found in the Magnesium Creams, Sprays and Oils section of our Magnesium Supplements Review.

Humidifiers & PFAS

4/15/2022
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Some types of humidifiers can add potentially dangerous PFAS to the air. Get the details in our updated answer about PFAS and how to avoid them.

Arginine for Mild Cognitive Impairment?

4/15/2022
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Can supplementing with L-arginine help elderly people with mild cognitive impairment (MCI)? Find out what a recent study showed in the What It Does section of our L-Arginine Supplements Review.

Also see our CL Answer about other supplements for Memory and Cognition.

Caution With SAMe

4/15/2022
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Recent laboratory research suggests caution with the use of SAMe. For details, see the Concerns and Cautions section of our SAMe Supplements Review.

Mushrooms for Lowering Cholesterol?

4/15/2022
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The beta-glucan in oats can help lower elevated levels of cholesterol, but can the beta-glucan in mushrooms do the same? Find out in our article about Supplements and Foods for Lowering Cholesterol.

Acrylamide in Fruit

4/15/2022
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Find out which dried or smoked fruits contain acrylamide, and which do not, in our updated article about acrylamide.

Pickle Juice Works for Muscle Cramps

4/19/2022
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A recent study found that pickle juice reduced the severity of cramps (e.g., in the calves and feet). Get the details, including the dosage, timing, and type of pickle juice used in our article about Supplements for Muscle Cramps.

Also find out if a product called HOTSHOT might be beneficial for muscle cramps.

Shiitake Mushroom Rash

4/19/2022
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If not properly prepared, shiitake mushrooms can cause a distinctive skin rash, as noted in recent reports. The details are in our article about ergothioneine, a potentially beneficial compound found in shiitake and other mushrooms.

Ashwagandha for Anxious Dogs?

4/19/2022
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Can ashwagandha supplementation reduce fear and anxiety in anxious dogs? See what a new study found in the What It Does section of our Ashwagandha Supplements Review.

(Also see our other articles about supplements for dogs.)

CPAP Humidifiers & PFAS?

4/19/2022
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Can using a CPAP humidifier increase one's exposure to potentially dangerous PFAS? Find out in our updated answer about Avoiding PFAS.

Masks No Longer Required, But Recommended

4/19/2022
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A federal judge has ruled that masks are no longer required on flights and other forms of public transportation, although wearing a mask is still recommended by the CDC.

Does mustard help with cramps?

4/22/2022
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Several CL members have reported that taking mustard has relieved muscle cramps. Find out why this may help in our answer about foods and supplements for cramps.

Vitamin E for Fatty Liver Disease?

4/22/2022
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Can supplementation with vitamin E benefit people with non-alcoholic fatty liver disease (NALFD)? See what the American Heart Association recently advised in the What It Does section of our Vitamin E Supplements Review.

Also see our answer to the question: Do any supplements help with fatty liver disease?

Cinnamon for Lowering Blood Sugar?

4/22/2022
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Does taking cinnamon powder or extract help control blood sugar levels in people with prediabetes or type 2 diabetes? See what the latest study, and earlier studies, have found in the Blood sugar, type 2 diabetes and prediabetes of our Cinnamon Supplements Review.

Also see: Which supplements and foods can help lower or control my blood sugar?

Siberian Rhubarb for Menopause?

4/22/2022
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Can supplementing with Siberian rhubarb extract (as found in Menopause 731 by Life Extension, and Estrovera by Metagenics) relieve hot flashes and other symptoms of menopause? Find out what research shows in our Menopause Supplements Review.

Also see if there are any supplements you should avoid if you are taking estrogen replacement.

Why Coffee Lacks Prop 65 Warning

4/22/2022
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Although coffee is a notable source of acrylamide, it doesn’t need to have a California Prop 65 warning stating this risk. Find out why in our article about dietary sources of acrylamide.

Toothpaste vs. Tooth Powder

4/22/2022
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Is brushing with tooth powder as good as brushing with toothpaste? Find out what research has shown in our answer to the question: Which ingredients should toothpaste contain, and which should be avoided?

Rosemary for Hair Loss?

4/22/2022
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Does applying rosemary oil to the scalp reverse male pattern baldness? Find out what research shows in our updated answer about hair loss supplements.

Fresh Ginger vs. Ginger Supplements

4/22/2022
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How much fresh ginger is equivalent to what is in a ginger supplement? Find out in the ConsumerTips section of our Ginger Supplements Review. Also see which ginger supplements passed or failed our tests, and what's in ginger spices and ginger ale, based on our tests.

Phosphatidylserine from Foods

4/22/2022
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Can you get phosphatidylserine from foods, like navy beans? Find out which foods are highest in phosphatidylserine in our updated CL Answer about Phosphatidylserine and Phosphatidylcholine.

Vitamin C & Mortality

4/26/2022
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Higher blood levels of vitamin C were associated with increased risk of death over a 10-year period in a recent study. Get the details in the Concerns and Cautions section of our Vitamin C Supplements Review. Also see adequate intake amounts for vitamin C.

B-12 for Nighttime Leg Cramps

4/26/2022
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Raising lower blood levels of vitamin B-12 may help with nighttime leg cramps according to some reports. Get the details in the B-12 section of our B Vitamin Supplements Review.

For information about other supplements that may help, see our answer to the question: Do any supplements, foods, or oils help reduce muscle pain, muscle cramps, or nighttime leg cramps?

Krill Oil & Muscle Strength

4/26/2022
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Supplementing with krill appeared to improve muscle strength in older men and women in a recent study. See the Muscle, Strength and Falls section of our Fish Oil Supplements Review for details.

Herb For Weak Bones?

4/26/2022
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Can supplementing with Cissus quadrangularis powder improve bone density in postmenopausal women? Find out what a recent study showed in our answer about OsteoMD, a bone health supplement containing this ingredient.

Also see our answer to the question: Do any supplements help prevent or treat osteoporosis?

Ways to Keep Ticks Off

4/26/2022
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It is the start of tick season in the U.S. Learn several strategies for preventing tick bites.

Cranberry Juice vs Cocktail

4/26/2022
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Although either may help prevent UTIs, learn the huge difference between cranberry juice and juice cocktail, and how you can avoid as much as 300 Calories a day with our Top Pick among cranberry juices.

Acrylamide in Popcorn; Air Frying

4/26/2022
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We’ve answered more questions about acrylamide, a toxin and potential carcinogen, from readers:

  • Is there more acrylamide in popcorn that is microwaved or conventionally heated?
  • Does air frying produce less acrylamide than conventional frying?

CoQ10 & Cholesterol

4/29/2022
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Did supplementing with CoQ10 improve HDL cholesterol levels or function among people with high cholesterol? Find out what a recent study showed, and also learn how CoQ10 affects LDL cholesterol, in the Cardiovascular Health section of our CoQ10 and Ubiquinol Supplements Review.

MTHFR Mutations and B Vitamin Deficiencies

4/29/2022
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People with a certain MTHFR gene mutation (C677T) may be more likely to develop B vitamin deficiencies. But what about those with a less common MTHFR mutation – A1298C? Find out what research suggests in the MTHFR gene mutation and B vitamin metabolism section of our B Vitamin Supplements Review.

Vitamin K and Heart Valve Calcification

4/29/2022
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Can supplementation with the MK-7 form of vitamin K2 slow the progression of aortic valve calcification, a risk factor for cardiovascular disease? See what a new study found in the Heart Disease section of our Vitamin K Supplements Review.

Also see our answer to the question: Which supplements or foods can help lower cholesterol and keep my heart healthy? Are there any to avoid?

Resveratrol for Migraine?

4/29/2022
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Can resveratrol supplementation decrease the frequency or severity of migraine in women with menstrual migraine? See what a new study showed in the What It Does section of our Resveratrol Supplements Review.

Also see our answer to the question: Do any supplements or foods help with migraine? Do any trigger migraine?

Reduced Risk with Second Booster?

4/29/2022
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Find out how much the second booster reduces risks compared to having only the first booster.

Vaccines and Appendicitis

4/29/2022
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Do COVID-19 vaccines increase the risk of appendicitis? Find out.

Top Picks for Toothpaste

4/29/2022
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Find out which toothpastes we think are best, based on their ingredients, for preventing cavities, reducing tooth sensitivity, or whitening, in our updated answer about toothpaste ingredients.

May

Severe B-12 Deficiency Can Be Missed

5/02/2022
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B-12 deficiency can cause severe symptoms, even when B-12 levels in the blood are not low, as shown in a recent case. Find out why, and which tests can help, in the B-12 section of our B Vitamin Supplements Review.

Taking Calcium Poses Risk to Some

5/03/2022
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Supplementing with calcium appears to pose a higher risk of death for people with existing narrowing of the aorta. Get the details in the Mortality and Cardiovascular Disease section of our Calcium Supplements Review.

Niacin & Shock-like Symptoms

5/03/2022
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Taking very high doses of niacin can cause symptoms resembling anaphylactic shock, as was recently reported. Get the details in the Niacin section of our B Vitamin Supplements Review.

Acrylamide In Air Popped Popcorn

5/03/2022
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Readers asked how much acrylamide is in air popped popcorn, and how this compares to corn popped other ways. Find out in the popcorn section of our answer about acrylamide.

Vitamin C & Blood Thinners

5/03/2022
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Is it safe to take vitamin C if you take anticoagulants like warfarin? See the answer in the Concerns and Cautions section of our Vitamin C Supplements Review.

Toothpaste for Crowns, Veneers, and More

5/06/2022
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What type of toothpaste is best for crowns, veneers, and implants?

Can any toothpaste restore enamel?

Toxin In Coffee?

5/06/2022
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Is roasted coffee likely to be contaminated with ochratoxin A? Find out what a recent study found in our updated article about contaminants in coffee.

Also see our articles about ochratoxin A in cocoa and chocolate and oat cereals.

Tick Bites

5/06/2022
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Learn how to correctly remove ticks, and what not to do!

Find out if natural tick repellents such as cedar oil, geranium oil or citronella are known to be safe and effective.

J&J Vaccine Use Limited

5/06/2022
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The FDA has limited the use of the J&J vaccine due to safety concerns. Find out why and who’s still eligible to receive this vaccine.

Omicron

5/06/2022
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Does Omicron infection protect against subsequent infections by new variants of Omicron, and do vaccines help? Find out what evidence suggests.

Masks When Traveling

5/06/2022
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Be aware that experts still recommend wearing a mask when traveling. Get the details.

Caution With Kidney Stone Supplements

5/10/2022
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Many supplements promoted to prevent or dissolve kidney stones contain ingredients with little or no evidence. Get the details in our article about supplements, foods and beverages & kidney stone risk.

Whey Protein & Blood Pressure

5/10/2022
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Older people may experience a dip in blood pressure after consuming whey protein, according to a recent study. Get the details in the Concerns and Cautions section of our Protein Powders, Shakes, and Drinks Review.

Brushing With Baking Soda: A Caution

5/10/2022
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Is it safe to use baking soda instead of toothpaste to brush your teeth? Find out in the Natural Toothpastes section of our article about Finding the Best Toothpaste.

Choosing a Tart Cherry Product

5/10/2022
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Which tart cherry products are best for reducing muscle pain, improving sleep, or lowering blood pressure or cholesterol? Although the evidence is not strong, we identified products with the most evidence behind them in our Tart Cherry article.

Bioactive Glass for Tooth Sensitivity?

5/10/2022
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Can toothpaste with Biomin F, a "bioactive glass," reduce tooth sensitivity? Find out in our updated CL Answer about Finding the Best Toothpaste.

Most Quercetin Brands Fail Test

5/13/2022
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Twenty out of 24 brands of quercetin purchased on Amazon contained much less quercetin than listed in a recent analysis. For details by brand, see the Quality Concerns section of our Quercetin Review.

More Soaps Reviewed

5/13/2022
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At the request of readers, we reviewed two additional soaps – Dove Sensitive Skin Beauty Bar and Vanicream Cleansing Bar. Find out if these meet our criteria for avoiding irritation in our article 5 Tips For Choosing a Soap or Body Wash.

New Nicotinamide Riboside Top Pick

5/13/2022
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We recently tested and Approved a nicotinamide riboside supplement that provides the most-studied form of nicotinamide riboside and is our new Top Pick for nicotinamide riboside in our NAD Booster Review.

Crown and Veneer Damage from Mouthwash?

5/13/2022
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Does mouthwash damage crowns and veneers? Ingredients in some mouthwashes can be problematic. We’ve added information about this to our article about finding the best toothpaste.

Supplements and Foods for Constipation

5/13/2022
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Which supplements and foods are best for relieving constipation? We’ve updated our answer to include more information about fruits.

Paxlovid Interaction With Supplements

5/13/2022
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Paxlovid is strongly recommended for COVID treatment, but be aware that it may interact negatively with certain supplements, as well as many drugs. Get the details in CL Answer about COVID-19 treatments.

Supplements Reduce Invasive Cancer Risk

5/17/2022
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Supplementing with vitamin D and omega-3 reduced the risk of invasive cancer in older men and women, according to a recent analysis. Adding resistance exercise further decreased this risk. Get the details in our Vitamin D Supplements and Fish and Marine Oil Supplements Reviews. 

Safety of a Soap Ingredient

5/17/2022
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Is the soap ingredient cocamidopropyl hydroxysultaine (CAPHS) of as much concern as cocamidopropyl betaine?

Diatomaceous Earth Toothpaste?

5/17/2022
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Is diatomaceous earth a safe abrasive ingredient in toothpaste? Find out what research suggests in our updated CL Answer about finding the best toothpaste.

Omicron Lasts on Surfaces

5/17/2022
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The Omicron variant of the coronavirus was recently shown to last on surfaces longer than the original (Wuhan) virus. Get the details and possible implications in our answer about COVID-19 disinfection.

New Toothpaste Top Pick

5/20/2022
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See our new Top Pick toothpaste for whitening surface stains, and see what we suggest for deeper stains. Also find out why we changed our mind about our previous Top Pick.

At-Home Tests

5/20/2022
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You can now order 8 more COVID-19 antigen tests from the government. Get the details.

Gromwell Root for COVID-19?

5/20/2022
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Can gromwell root (an ingredient in the supplement Tollovid) help treat or prevent COVID-19? See what the latest research shows in our article about supplements for COVID-19.

Pfizer Booster for Children

5/20/2022
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A Pfizer vaccine booster for children is now authorized by the FDA. Get the details in our updated article about COVID-19 Vaccines.

Inulin for Constipation?

5/20/2022
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What Are Postbiotics?

5/20/2022
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What are postbiotics and are they helpful? Find out in the Postbiotics section of our Probiotic Supplements Review.

Skin Yellowing from Turmeric/Curcumin

5/24/2022
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Taking turmeric or curcumin has been reported to cause yellowing of the skin in some circumstances. Get the details in the updated Concerns and Cautions section of our Turmeric and Curcumin Supplements and Spices Review.

Curcumin for Parkinson's?

5/24/2022
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Does adding curcumin to standard treatment for Parkinson’s disease improve symptoms and the quality of life? Find out what a recent study showed in the Other Uses section of our Turmeric and Curcumin Supplements and Spices Review.

Cranberry for Memory?

5/24/2022
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Can supplementing with cranberry powder boost memory and cognition in older men and women? See what a recent study found in the Concerns and Cautions section of our Cranberry Juices and Supplements Review.

Caution With Children’s Multivitamins

5/24/2022
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Many multivitamins for children exceed tolerable daily intake limits, as noted in a recent report. Find out which nutrients are most often too high in the Children's section of our Multivitamin and Multimineral Supplements Review.

Saffron and Blood Thinners

5/24/2022
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Saffron may interact with blood-thinning medications such as rivaroxaban (Xarelto), according to a recent report. Get the details in our updated answer to the question: Are there supplements I should avoid when taking apixaban (Eliquis) or similar blood thinner drugs like Xarelto?

Toothpaste and Rinses

5/24/2022
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We answered the following questions this week as part of our broader article about "Which ingredients should toothpaste contain, and which should be avoided?"

2nd Booster Recommendations

5/24/2022
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The CDC has strengthened its recommendation for the 2nd booster for people 50 and older and those 12 and older who are immunocompromised. Find out what prompted this change in our updated CL Answer about COVID-19 vaccines.

Best Bug Sprays

5/27/2022
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Find out which insect repellants (for ticks and mosquitoes) are our Top Picks for use on skin and on clothing and gear based on their ingredients.

Also find out:

Top Pick for Whitening Strips

5/27/2022
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Find out which whitening strips are our Top Pick for reducing deep stains on teeth in our updated CL Answer about finding the best toothpaste.

Also see our Top Picks among toothpastes for:

Melatonin and Urinary Frequency

5/27/2022
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Can melatonin supplementation decrease nighttime urinary frequency in older women? See what a recent study found in the Concerns and Cautions section of the Melatonin Supplements Review.

Prebiotics for Reducing Appetite?

5/27/2022
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Can adding prebiotics (such as fructooligosaccharides (FOS) or partially hydrolyzed guar gum (PHGG)) to meals help increase satiety or reduce appetite? Find out what a recent study showed in the All About Prebiotics section of the Probiotics Supplements Review.

Sodium Bicarbonate or Marshmallow Root for Constipation?

5/27/2022
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Does supplementing with sodium bicarbonate (baking soda or bicarbonate of soda) or marshmallow root help treat constipation? See the answers in our updated article about supplements for constipation.

Glycerin and Edathamil in Toothpaste

5/27/2022
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Does glycerin in toothpaste have any negative effects such as sealing in microbes or preventing remineralization?

Does edathamil in toothpaste help control plaque?

June

Ubiquinol for Heart Failure

6/01/2022
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Can supplementing with ubiquinol help people with diastolic heart failure? Find out what a recent study showed. Also see if CoQ10 helps with congestive heart failure in the Cardiovascular Health section of our CoQ10 and Ubiquinol Supplements Review.

Too Much B-6 After Stomach Surgery?

6/01/2022
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People who have had gastric bypass, gastric sleeve, or gastric band surgery may be supplementing with too much B-6 after surgery, according to a recent study. Get the details in our updated article about the Best Vitamins to Take After Bariatric Surgery.

Bug Sprays Around Pets & Laundry Water Disposal

6/01/2022
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We answered the following questions from our readers:

Are bug repellents or insecticides for humans safe for use on or around pets?

Is it safe to dispose of laundry water used to wash permethrin-treated clothing?

Garlic for Rheumatoid Arthritis?

6/01/2022
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Can garlic supplementation decrease pain, swelling, or medication use in women with rheumatoid arthritis? Find out in the updated What It Does section of our Garlic Supplements Review.

Quercetin From Food or Supplements?

6/01/2022
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Is it more cost effective to get quercetin from food (as rutin) than supplements? See our answer in the Quercetin Review.

Help for Hair Growth?

6/01/2022
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Is there evidence that applying onion juice, castor oil, rice water, or aloe vera to the scalp aids in hair growth? We’ve added information about these approaches to our article about Supplements for Hair.

Disinfectants With Hypochlorous Acid

6/01/2022
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Are disinfectants with hypochlorous acid, such as Force of Nature and CleanSmart effective alternatives to harsher cleaning chemicals? Find out in our article about COVID-19 and Disinfecting.

Melatonin Poison Reports Jump

6/03/2022
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Reports to poison control centers regarding melatonin ingestion have skyrocketed in recent years among infants, children and adolescents. See the Concerns and Cautions section of our Melatonin Supplements Review for details and other potential safety issues with melatonin.

Is Lutein Safe?

6/03/2022
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Was adding lutein and zeaxanthin to a popular supplement for age-related macular degeneration safe and effective? Find out what a major study found in the What It Does section of our Vision Supplements Review.

CBD Arthritis Cream?

6/03/2022
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Did CBD cream decrease pain or improve function in people with arthritis in their hands? See what a recent study found in our CBD Review.

Nutrafol for Hair?

6/03/2022
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Is Nutrafol beneficial for hair growth? Get the details in our article about Supplements for Hair.

Digestive Enzymes for IBS?

6/03/2022
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Does taking digestive enzymes reduce symptoms of irritable bowel syndrome (IBS)? Find out in our updated Digestive Enzyme Supplements Review.

Caution Reading Rapid Tests

6/07/2022
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Many people incorrectly read rapid home tests for COVID-19, according to a recent study. Find out how to avoid the biggest mistake in our article about COVID tests.

Managing COVID-19 Rebound

6/07/2022
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Some people experience COVID-19 recurrence after being treated with the antiviral drug Paxlovid. Find out what is recommended when this happens in our updated CL Answer about COVID-19 treatments.

Low Quality Elderberry Sold on Amazon

6/07/2022
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More than two-thirds of elderberry supplements sold on Amazon did not contain authentic elderberry in a recent study. Although brands were not identified, learn what was actually found in the Quality Concerns section of our Elderberry Supplements Review.

Eggshell Membrane for Osteoarthritis?

6/07/2022
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Eggshell membrane – a source of collagen – may reduce pain in people with osteoarthritis if taken at a certain dose, according to a recent study. Get the details in the Joint Pain section of our Collagen Supplements Review.

Liver Danger With Muscle-Building Supplement

6/07/2022
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A case of liver toxicity was linked to use of an illegal ingredient found in some muscle-building supplements. Get the details in the Concerns and Cautions section of our Muscle & Workout Supplements Review.

Carnosine vs. Beta-alanine

6/07/2022
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Does beta-alanine, a constituent of L-carnosine, have similar effects to supplementing with L-carnosine itself? Find out what evidence suggests in our updated article about L-carnosine.

Supplement Company Reacts to Our Red Yeast Rice Review

6/10/2022
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The distributor of a red yeast rice product that was Not Approved in our recent tests has written that it disagrees with our conclusions and recommendations. Learn why and our response to its requests.

Whitening Strips Compared

6/10/2022
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A recent study compared the whitening effect of a popular Crest peroxide whitening strip to that of two non-peroxide strips promoted as gentler on teeth. Find out which type worked best.

Abrasiveness of Sensodyne Toothpaste

6/10/2022
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We've added updated information about the abrasiveness of four more Sensodyne toothpastes, as provided by a company representative. Get the details in our article Which ingredients should toothpaste contain, and which should be avoided?

Insect Repellants – 98% Deet?

6/10/2022
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As an insect repellant, is 98% DEET better than 35% DEET? Find out in our updated article about insect repellents.

Supplements for Farsightedness?

6/10/2022
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Can a supplement improve vision in older people who develop trouble seeing up-close (i.e., presbyopia or age-related farsightedness)? See the study results for a supplement that included lutein, astaxanthin, bilberry and DHA in our Vision Supplements Review.

Top Pick for Boswellia (Anti-Inflammatory)

6/10/2022
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We just tested two Boswellia extract supplements (containing the anti-inflammatory compound AKBA). One failed testing but the other passed and is now our Top Pick for Boswellia. The results are in our Joint Health Supplements Review, which include our tests of supplements with glucosamine, chondroitin, MSM and other ingredients.

Statin Interaction

6/14/2022
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Supplementing with soy isoflavones was found to reduce the activity of a cholesterol-lowering drug in some people. Get the details in the Concerns and Cautions for soy section of our Menopause Supplements Review.

Also see our article about supplement interactions with statin drugs.

Fish Oil For Dry Eye?

6/14/2022
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Can taking fish oil reduce dry eye in older men and women? Find out what a recent study showed in the What It Does section of our Fish Oil Supplements Review.

Also see our CL Answer about Supplements for Dry Eye.

Spermidine for Memory?

6/14/2022
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Find out if taking spermidine improved memory or cognition in older men and women in a recent study in our article about Supplements for Memory and Cognition.

Best Supplements for Vegetarians and Vegans?

6/14/2022
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Which vitamins and minerals are mostly likely to be needed by vegetarians and vegans? Find out in our new article about the Top 8 Supplements for Vegetarians and Vegans.

Zinc Carnosine: A Better Zinc Source?

6/14/2022
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Is zinc carnosine more bioavailable than other forms of zinc? Find out what an expert nutrition panel recently concluded in our updated CL Answer about zinc carnosine.

Curcumin for COVID?

6/14/2022
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Does curcumin supplementation reduce symptoms such as cough, sore throat, and shortness of breath in people with mild to moderate COVID-19? See what a recently published study found in the What It Does section of our Turmeric and Curcumin Supplements and Spices Review.

Also see our article about other supplements proposed to help prevent or treat COVID-19.

Duration of EVUSHELD Protection

6/14/2022
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How long does the medicine EVUSHELD protect against COVID-19? Find out what recent data showed in our article about medicines to prevent and treat COVID-19.

Travel Requirements Updated

6/17/2022
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The CDC no longer requires that travelers show a negative COVID-19 test or documentation of recovery from COVID-19 before boarding a flight into the U.S. Get the details about what is still recommended in the Travel section of our article about COVID vaccines.

Lion’s Mane for Neuropathy?

6/17/2022
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Does supplementation with lion’s mane reduce symptoms of neuropathy? Find out what evidence suggests in our article about lion’s mane.

Also see our CL Answer about supplements for nerve pain.

Managing Bleeding Gums

6/17/2022
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Find out which ingredients can help prevent gum disease and our Top Picks toothpaste and mouthwash for bleeding gums in our updated answer to the question about finding the best toothpaste.

Probiotic for Depression?

6/17/2022
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Did a popular probiotic blend help people with severe depression? See what a recent study found in the Anxiety and Depression section of our Probiotics Supplements Review.

Also see our answer to the question: What are the best supplements for depression and anxiety?

Vitamin C & Kidney Stones

6/17/2022
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High intake of vitamin C has been linked with an increased risk of kidney stones, but is the risk similar among men vs women?

Supplements for POTS?

6/17/2022
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People with postural orthostatic tachycardia syndrome (POTS) experience a fast heart rate, dizziness, and other symptoms when standing. Can any supplements or lifestyle changes help? Find out in our answer to the question: Are there supplements that help treat POTS?

L-carnosine for Cardio Fitness?

6/17/2022
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Does research support L-carnosine supplementation for improving cardio fitness? Find out what a study showed among people with heart failure in our updated CL Answer about L-carnosine.

Muscle Weakness from Mushrooms?

6/21/2022
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Be aware that, although rare, mushrooms and mushroom supplements may trigger a rare autoimmune reaction resulting in muscle pain or weakness. Get the details in the Concerns and Cautions section of our Reishi Supplements Review.

Melatonin for MS?

6/21/2022
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Can taking melatonin help people with multiple sclerosis (MS)? Find out what a recent study showed in the What It Does section of our Melatonin Supplements Review.

Also see our article about supplements for MS.

Best Form of Carnitine?

6/21/2022
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Which form of L-carnitine is best absorbed? Find out what research shows in the What to Consider When Buying section of our Acetyl-L-Carnitine Supplements Review.

Drinking Water & PFAS

6/21/2022
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The EPA indicated last week that it intends to slash the amount of PFAS that can safely be in drinking water. Get the details in the Drinking Water section of our CL Answer about PFAS. Also see our information about water filters to remove PFAS.

Garlic & Bleeding Risk

6/21/2022
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How much garlic does it take to increase the risk of bleeding? Find out in the Concerns and Cautions section of our Garlic Supplements Review.

Also see our article about supplements that should be avoided before surgery.

Vaccine Protection Against Omicron

6/21/2022
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How well do vaccines protect against Omicron? See how three vaccine doses compared to two doses, or to previous COVID infection, in protecting against symptomatic Omicron infection, based on a recent study.

COVID-19 Vaccination for Young Children

6/21/2022
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Thyroid Product Caution

6/21/2022
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Use of a popular thyroid product may interfere with important thyroid tests, according to recent reports. Get the details in our article about Supplements and Hypothyroidism.

Beta-sitosterol & Bleeding Risk?

6/24/2022
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Does taking beta-sitosterol increase bleeding risk? Find out in the Concerns and Cautions section of our Prostate Supplements Review.

SLS in Toothpaste?

6/24/2022
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What are the pros and cons of sodium lauryl sulfate (SLS) in toothpaste?

Salt Water for Gums?

6/24/2022
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Can rinsing with salt water reduce plaque build-up or help with bleeding gums?

Placebo Effect With Creatine?

6/24/2022
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Creatine seems to improve strength and endurance during high-intensity exercise, but the benefit may be due to a psychological effect, according to a recent study. Learn more in the What It Does section of our Muscle & Workout Supplements Review.

Probiotic for Antibiotic-Associated Diarrhea in Kids?

6/24/2022
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Did taking a probiotic reduce the risk of antibiotic-associated diarrhea in children? Find out what a recent study showed in the Antibiotic-associated diarrhea section of our Probiotics Supplements Review.

Herring vs Other Fish

6/28/2022
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How good is smoked herring compared to sardines, salmon, and tuna? We bought and tested two favorite herrings of CL readers, Trader Joe's and Crown Prince. See what we found, our Top Pick for herring, and how these compare on mercury, arsenic, and omega-3 fatty acids to each other and 20 other products in our Tuna, Salmon, Sardines and Herring Review.

Vitamin D & Cancer

6/28/2022
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Does vitamin D decrease the risk of cancer or cancer mortality? See the latest evidence in the Cancer section of our Vitamin D Supplements Review.

Flu Vaccine Recommendations for Seniors

6/28/2022
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An advisory panel for the CDC has updated its recommendations about which flu vaccines are preferred for people 65 and older. Get the details.

B-12 Deficiency & Stomach Surgery

6/28/2022
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Many people who have had bariatric (stomach-reducing) surgery need to supplement with B-12 and other B vitamins. Find out what happened to such a person who discontinued supplementation in the Vitamin B-12 section of our B Vitamin Supplements Review.

Stop This Supplement Before Surgery?

6/28/2022
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Should you discontinue taking nattokinase prior to surgery? Find out in our updated CL Answer about supplements you should stop taking before surgery.

COVID-19 Tests for Sight Impaired

6/28/2022
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People with blindness or low vision can now order more accessible COVID-19 tests from the government. Get the details.

July

Don't Throw Out Expired COVID Tests

7/01/2022
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The shelf-lives of home COVID-19 tests have been extended by 3 to 7 months based on tests showing that many are still good past their printed expiration dates. Get the details for specific brands of tests in our article comparing COVID tests.

Don't Trust CBD Labels

7/01/2022
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Nearly one-quarter of products that claim “not” to contain THC actually contain it, according to a recent study. This can lead to unexpected problems. Learn more in the "Products on the Market" section of our Review.

Potassium for Arthritis?

7/01/2022
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Can increasing potassium intake reduce joint pain in people with rheumatoid arthritis? See what a recent study found in the Rheumatoid Arthritis section of our Potassium Supplements Review.

Also see our CL Answer about Supplements for Arthritis.

Mushroom Compound for HPV?

7/01/2022
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Active hexose correlated complex (AHCC), produced from mushrooms, may help clear persistent, high-risk human papilloma virus (HPV) infection in women, according to a recent study. Get the details in the Antiviral Effects section of our CL Answer about AHCC.

Shampoo for Hair Growth?

7/01/2022
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Is there evidence that shampoos like d'or Hair Thinning Therapy Shampoo or Nioxin really work? Find out in our updated CL Answer about supplements and topical treatments for hair.

Colorant & Iron Overload?

7/01/2022
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Some supplements contain red iron oxide as a colorant. Should people at risk for iron overload be concerned about the iron provided by this ingredient? Find out in the Concerns and Cautions section of our Iron Supplements Review.

Walnuts for Omega-3s?

7/06/2022
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Walnuts are often touted as a good source of the omega-3 fatty acid ALA, but can eating walnuts regularly increase blood levels of DHA and EPA (the omega-3s in fish oil)? Find out in the What It Is section of our Black Currant Oil, Borage Oil, Evening Primrose Oil, Flaxseed Oil, and Hemp Oil Supplements Review.

Cinnamon & Bleeding Risk

7/06/2022
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Regularly consuming large amounts of cinnamon may increase the risk of bleeding after surgery, as was recently reported. Get the details in the Concerns and Cautions section of our Cinnamon Supplements Review.

Whey Protein & Blood Pressure

7/06/2022
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Whey protein may temporarily lower blood pressure. Find out if adding carbohydrates and fats reduces this effect in the Concerns and Cautions section of our Protein Supplements Review.

Curcumin for Fatty Liver?

7/06/2022
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Does supplementing with curcumin decrease liver fat in people with fatty liver? See what a recent study found in the What It Does section of the Turmeric and Curcumin Supplements and Spices Review.

Also see our answer to the question: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?

Bacopa Interaction

7/06/2022
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Bacopa, a popular ingredient in memory supplements, may interact with medications, as was recently reported. Get the details in our updated answer to the question: Does Bacopa extract improve memory, mood, or sleep? Is it safe?

Also see our article about supplements for memory.

Best DAO Supplement for Histamine Intolerance?

7/06/2022
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Which DAO supplements are most like what has been used in clinical studies to reduce symptoms of intolerance to histamine-rich foods like cheese, sausage, beer and wine? Find out in our updated article about DAO Supplements & Histamine Intolerance.

SPF of Sunscreens

7/06/2022
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How can sunscreens that contain the same concentrations of zinc oxide and titanium dioxide have different SPFs? Find out and learn what to look for in sunscreens in our updated article about Finding the Best Sunscreens.

Also find out if any foods or supplements can help prevent sunburn and learn which foods might increase sun-related skin damage.

Which Supplements to Stop Before Blood Work?

7/08/2022
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Find out which vitamins and supplements can interfere with blood tests, urine and stool tests, and even imaging tests, and when these supplements should be stopped in our new answer to the question: Which vitamins and supplements should be stopped before getting blood work and laboratory tests?

Is Fermented Turmeric Better?

7/08/2022
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Find out if fermented turmeric is better absorbed than other turmeric formulations in the Absorption and Bioavailability section of our Turmeric and Curcumin Supplements Review.

B-5 for Arthritis?

7/08/2022
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Can vitamin B-5 supplementation improve symptoms of rheumatoid arthritis or osteoarthritis? Find out what research suggests in the B-5 (Pantothenic Acid) section of our B Vitamins Supplements Review.

Best Way to Take Fisetin?

7/08/2022
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Can fisetin (promoted for memory) be taken on an empty stomach, or should it be taken with food? Find out in the Dosage section of our CL Answer about fisetin.

Avoiding a Toxin in Herbs

7/08/2022
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Pyrrolizidine alkaloids (PAs) naturally occur in many plants, including some herbs, and can be toxic. Learn more and how to avoid them in our answer to the question: Should I be concerned about pyrrolizidine alkaloids in herbal supplements?

Omicron BA.5 On the Rise

7/08/2022
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A new Omicron subvariant, BA.5, has become the dominant SARS-CoV-2 strain in the U.S. Find out how well this virus escapes protection from vaccination or previous infection, and learn if it causes more severe COVID-19 infection, in the Omicron section of our CL Answer about COVID-19 vaccines.

Supplement for Post-COVID Fatigue?

7/08/2022
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Did supplementing with oxaloacetate reduce symptoms in people with post-COVID fatigue in a recent study? Find out in the Strategies for managing long COVID section of our article about How to Take Care of Yourself After You’ve Had COVID-19.

Does DHA Lower Alzheimer's Risk?

7/12/2022
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Older people with high levels of the omega-3 fatty acid DHA were found to have a lower risk of developing Alzheimer's disease, according to a recent analysis. Does this mean that older people should be supplementing with DHA or fish or other marine oils? Find out in the Alzheimer's Disease section of our Fish and Marine Oil Supplements Review.

NAC for Fibrocystic Breast Pain?

7/12/2022
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Can NAC (N-Acetyl Cysteine) supplementation reduce monthly fibrocystic breast pain? See what a recent study found in the What It Does section of our NAC Supplements Review.

CBD for Epilepsy?

7/12/2022
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Did a gel of this ingredient reduce seizures in men and women with the most common form of epilepsy? Find out in the Epilepsy and seizure disorders section of our Review.

Hyaluronic Acid Injections for Knee Pain?

7/12/2022
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Do hyaluronic acid injections reduce pain or improve function in people with knee osteoarthritis? Find out what a recent analysis showed in the Hyaluronic acid section of our Joint Health Supplements Review.

Allergic to Flu Vaccine

7/12/2022
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Some people are allergic to neomycin, an ingredient in some flu vaccines. Find out which flu vaccines contain neomycin and which don't. Also learn which flu vaccines are preferred for people 65 and older.

Citrulline for Heart Health?

7/12/2022
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Does supplementing with citrulline reduce blood pressure and improve heart function in people with heart failure? Find out in the Citrulline section of our L-Arginine Supplements Review (citrulline is converted to L-arginine in the body).

Toxin in Borage Leaves & Tea

7/12/2022
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A member asked if borage flower is toxic due to its pyrrolizidine alkaloids. Learn about the safety of borage flower as well as borage leaf (used in teas) and borage oil in our updated CL Answer about pyrrolizidine alkaloids.

How to Get Paxlovid Without a Medical Doctor

7/12/2022
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Pharmacists can now directly prescribe Paxlovid for people with COVID-19, but there are limitations. Find out what you need to bring to the pharmacy to get Paxlovid if you've tested positive and are at risk for severe COVID-19.

Reinfection Risks

7/12/2022
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Learn how soon after COVID-19 you can get infected again with the Omicron BA.5 variant, which is now dominant in the U.S. and, as we have reported, is more transmissible than earlier variants.

Be aware that getting COVID-19 more than once has been associated with increased risk of developing a variety of health problems, according to recent research.

Add Omega-3s to Statins?

7/15/2022
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Does adding omega-3 fatty acids to statin therapy reduce the risk of heart attack or death in people with high triglycerides? Find out what a recent study showed in the Use With Statins section of our Omega-3 Supplements Review.

B Vitamins for Parkinson's?

7/15/2022
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People with Parkinson's disease tend to have lower levels of vitamin B-6 and B-12. Find out if supplementing with B-6 or B-12 is beneficial and whether B-6 can interfere with drugs for Parkinson's.

Is Soy Good or Bad?

7/15/2022
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Are soy products such as soy isoflavones, soy protein, soy oil, and soy lecithin beneficial or harmful? Find out in our answer to the question: Is soy in supplements good or bad for you?

New Vaccine Authorized

7/15/2022
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The FDA has authorized the Novavax COVID-19 vaccine, which will likely be made available next week. Find out how it differs from the other COVID-19 vaccines, learn about its effectiveness against COVID-19, and get details about possible side effects.

Protection Due to Infection?

7/15/2022
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How well does a previous COVID-19 infection protect against BA.4/BA.5 infection? It depends on which COVID-19 variant caused the initial infection, according to a recent study.

Fraudulent COVID-19 Tests

7/15/2022
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Several unauthorized COVID antigen tests have been sold recently in the U.S., according to the FDA. Get the details in our answer about testing for coronavirus.

New Cocoa Top Pick

7/15/2022
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We've just tested and Approved three CocoaVia products through our voluntary Quality Certification Program and one is now a Top Pick. Find out how these compare to other cocoa supplements, powders, dark chocolate bars, chips, and nibs – as well as our Top Picks among these, in our updated Dark Chocolate and Cocoa Review.

Vitamin D & Alzheimer's Caution

7/19/2022
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Although several studies suggest that maintaining an adequate level of vitamin D may help reduce the risk of Alzheimer's, a recent study provided a cautionary note. See the details in the Alzheimer's and Dementia section of the Vitamin D Supplements Review.

Quercetin for Seasonal Allergies?

7/19/2022
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Did quercetin improve nasal and eye symptoms among people with seasonal allergies in recent study? Find out in the Seasonal Allergy section of our Quercetin Supplements Review.

Bad Clams

7/19/2022
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Two popular brands of canned clams were recently recalled. See the details our Canned Fish Review.

COVID + Flu Vaccines

7/19/2022
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Getting a COVID-19 vaccine along with a flu shot seems to slightly increase the risk of side effects, according to a recent study. Get the details.

Booster Benefit

7/19/2022
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Getting a second booster can significantly reduce the risk of COVID-19 hospitalizations among people 50 and older, according to a recent study.

Vaccines & Long COVID

7/19/2022
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Are COVID-19 vaccines helpful with long COVID? Find out.

Fruits & Veggies from Capsules?

7/22/2022
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A member asked if Balance of Nature's "Fruits" and "Veggies" capsules are good replacements for the real thing. See our assessment in the article: Are Balance of Nature products good dietary supplements?

Electrolytes for Hangovers?

7/22/2022
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Electrolyte drinks are often recommended to reduce hangover symptoms after drinking alcohol, but do they really help? Find out in our new answer to the question: Do electrolyte supplements, like Pedialyte, help with hangovers?

Fisetin & Blood Pressure

7/22/2022
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A CL member taking anti-hypertensive medication reported that a dose of fisetin reduced her blood pressure for several hours. Find out if this is a known effect in our updated Fisetin article.

Also see our CL Answer about supplements that may affect blood pressure.

Does Arginine Improve Blood Flow?

7/22/2022
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L-arginine is often promoted to improve blood flow to muscle tissue, and so is L-citrulline (which is converted to L-arginine in the body). But a recent study adds more evidence that this is often not the case. See the details in the What It Does section our L-Arginine Product Review.

B-6 or Zinc for Pyrrole Disorder?

7/22/2022
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Can supplementing with vitamin B-6 or zinc improve psychiatric conditions associated with pyrrole disorder? Find out by using the links.

Cadmium, Lead & Chocolate

7/22/2022
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A CL member recently asked how cadmium and lead make their way into cocoa and chocolate products. Find out in the Cadmium, Lead and Arsenic section of our Dark Chocolates, Cocoa & Cacao Supplements Review. Also, find out how much cadmium ConsumerLab found in cocoa products.

Chamomile for Sleep?

7/26/2022
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A CL member asked us if chamomile tea is helpful for insomnia. See what research suggests, and learn about potential interactions with chamomile, in our updated answer to the question: What are the best supplements for insomnia? Are there any supplements that interfere with sleep?

The Best Way to Take Vitamins & Minerals

7/26/2022
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Some vitamins and minerals can compete with each other for absorption, or may be better absorbed with meals. Get the details and tips for taking in our updated answer to the question: Which vitamins and minerals should be taken together or separately?

Phosphatidylcholine & Heart Risk?

7/26/2022
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Free choline can raise blood levels of TMAO, which has been linked with adverse health effects. But does phosphatidylcholine, a form of choline (and the main form in eggs), have similar effects on TMAO levels? Find out in our updated Answer to the question: Is there a danger in taking lecithin or phosphatidylcholine?

B-6 or B-12 for Anxiety?

7/26/2022
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Can taking high-dose vitamin B-6 or B-12 improve self-reported anxiety? Find out what a recent study showed in the Anxiety section of our B Vitamin Supplements Review.

Also see our answer to the question: What are the best supplements for depression and anxiety?

Vitamin D and Heart Failure

7/26/2022
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Does high-dose vitamin D improve heart function in people with chronic heart failure? Find out what a recent study showed in the Cardiovascular disease, blood pressure, and cholesterol section of our Vitamin D Supplements Review.

Some UV Light Wands May Cause Injury

7/26/2022
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While often promoted to disinfect surfaces and kill germs in the home, some UV light devices may give off potentially dangerous levels of ultraviolet-C radiation. See which brands are of concern in our Answer about UV light sanitizing wands.

Novavax vs. Other Vaccines

7/26/2022
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Does Vitamin D Reduce Fracture Risk?

7/29/2022
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A new study indicates that high-dose vitamin D does not reduce the risk of bone fractures in older adults. Get the details in the What It Does section of the Vitamin D Supplements Review.

Who Should Use Red Yeast Rice

7/29/2022
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An international panel of experts recently published guidelines for use of red yeast rice. See the details in the ConsumerTips section of our Red Yeast Rice Supplements Review.

Cocoa Flavanols & Blood Pressure

7/29/2022
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Do the flavanols in cocoa and dark chocolate lower blood pressure? See what a recent study found in people with normal blood pressure, as well as results for people with hypertension.

Citicoline Bad for Arteries?

7/29/2022
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A CL member asked us if citicoline, a form of choline in supplements, can raise TMAO levels, which has associated with atherosclerosis (hardening of the arteries). Find out in the Concerns and Cautions section of or Choline Supplements Review.

Vitamin D for COVID-19?

7/29/2022
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A recent study suggested that supplementing with high-dose vitamin D could improve clinical outcomes for people hospitalized with COVID-19. Learn more in the COVID section of our Vitamin D Supplements Review.

August

Arnica for Bruising and Swelling?

8/02/2022
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See the clinical evidence for homeopathic arnica pills and topical arnica products in our updated answer to the question: Do arnica pills, gels, creams, or sprays reduce bruising, pain, or swelling?

Hawthorn for High Blood Pressure?

8/02/2022
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Can taking hawthorn lower blood pressure in people with hypertension? Find out what research shows in our updated answer to the question: Which supplements can help to lower blood pressure?

Glycine for Sleep?

8/02/2022
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Does taking glycine improve sleep and, if so, at what dose? Find out in our CL Answer about supplements for insomnia.

Supplements & Liver Injury?

8/02/2022
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We’ve added four additional supplements to our list of more than a dozen Supplements That May Cause Liver Toxicity.

Ginger & Weight Management

8/02/2022
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Does taking ginger improve weight management among women? Learn what a recent study showed in the What It Does section of our Ginger Supplements Review.

Increasing Folate from Beans & Peas

8/02/2022
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Beans and peas are great dietary sources of folate (vitamin B-9), but the right preparation can more than double their folate levels, according to a recent study. Find out how in the Folate section of our B Vitamin Supplements Review.

Also see our table of Foods Containing B Vitamins to find out other foods that are good sources of folate and other B vitamins.

Metformin and B-12 Deficiency

8/02/2022
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If you take metformin for diabetes, be aware that you are at risk for vitamin B-12 deficiency. See the latest guidelines to monitor for this in the B-12 section of our B Vitamin Supplements Review.

More Sunscreen Recalled Due to Benzene

8/02/2022
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Another popular brand of sunscreen has been recalled due to contamination with the toxic chemical benzene. Get the details and see the amounts of benzene found in more than 200 popular sun products in our updated article What is the best sunscreen based on safety and efficacy?

Also see our list of safer sunscreen products.

Vitamin C or Melatonin for COVID?

8/05/2022
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Find out if supplementing with vitamin C or melatonin reduced symptoms in people with mild to moderate COVID in a recent study.

GABA for COVID?

8/05/2022
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Does taking GABA help with COVID? Find out what’s been shown in our updated answer to the question: Do any supplements help with COVID-19?

Do Eyeglasses prevent COVID?

8/05/2022
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Did wearing eyeglasses or sunglasses in public reduce the risk of getting COVID-19? Find out what a recent study showed in our CL Answer about face shields.

TUDCA Compared

8/05/2022
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Which TUDCA supplements appear to be the best value? We added cost comparisons for some popular brands in our answer to the question: What is TUDCA? Does it have any proven health benefits, and is it safe?

How Long Are You Contagious?

8/09/2022
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If you test positive on a rapid antigen test after a 5-day isolation, how likely are you to still be contagious? Find out in our CL Answer about COVID-19 testing.

Caution With Mucuna for Parkinson’s?

8/09/2022
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Mucuna pruriens is a natural source of levodopa (a drug for treating Parkinson’s disease). A recent study in a major journal suggested that labels for Mucuna pruriens supplements were highly misleading – however, we analyzed their data and came to a different conclusion. Learn more in our updated CL Answer about Supplements for Parkinson's Disease.

B-12 and Insomnia?

8/09/2022
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A CL Member had trouble sleeping when taking high dose B-12 to correct a deficiency and asked us if this is common. Find out in the B-12 section of our B Vitamin Supplements Review.

Also see: Supplements That May Help or Worsen Insomnia.

Vitamin E for Fatty Liver Disease?

8/09/2022
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Can vitamin E improve liver health in people with non-alcoholic fatty liver disease (NAFLD)? Get the details in the Liver Disease section of our Vitamin E Supplements Review.

Also see our CL Answer about Supplements for Fatty Liver Disease.

ColonBroom

8/12/2022
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A CL Member recently asked us how ColonBroom, which is heavily promoted, compares to other psyllium fiber supplements. Find out in our Psyllium Fiber Supplements Review.

XyliMelts for Dry Mouth?

8/12/2022
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A CL member wrote to us about XyliMelts to treat symptoms of dry mouth. We've added clinical information about it to the Strategies to Reduce Dry Mouth section of our article about oral care products.

Thyroid Medication and CBD Interaction

8/12/2022
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Levothyroxine (a thyroid medication) may interact with CBD. Learn more in our article about Interactions with Levothyroxine (Synthroid).

Does Lycopene Cause Skin Discoloration?

8/12/2022
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High intake of lycopene-containing foods may cause skin discoloration, according to a recent report. Get the details in our Lycopene Supplements Review.

How Many Times Should You Test?

8/12/2022
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After exposure to COVID-19, how many times should you test? It may be more times than you think, according to a recent study. Get the details in the Antigen Tests section of our CL Answer about COVID-19 Testing.

New Recommendations for Quarantine

8/12/2022
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The CDC has issued new recommendations about what actions should be taken if you’re exposed to someone with COVID.

Relief Factor

8/16/2022
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A CL Member asked us if the supplement Relief Factor can really relieve aches and pains. See our answer.

Avoid Getting a Pill Stuck in Your Throat

8/16/2022
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A woman recently suffered a break in her esophagus due a pill that remained stuck to her throat, prompting us to write the following article: 6 Tips to Avoid Getting a Pill Stuck in Your Throat

Water for Dry Eye?

8/16/2022
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Does drinking extra water help with dry eye? Find out in our updated article about dry eye -- which includes information about supplements and lifestyle habits than can help.

Re-Applying Sunscreen

8/16/2022
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How often do you really need to re-apply sunscreen and does this vary by type of sunscreen? Find out in our updated article about finding the best sunscreen.

Microplastics in Fish Oil?

8/16/2022
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A CL member asked if they should be concerned about microplastics in fish oil supplements. Find out in our Fish Oil Supplements Review.

Less Centrophenoxine in Supplements Than Stated

8/19/2022
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Centrophenoxine, a drug that is prescribed in some countries to treat dementia, is also in supplements in the U.S., but a study found that most don't contain what they claim. Learn more in our article about supplements for memory and cognition.

B-6 Depleted by Parkinson’s Drug?

8/19/2022
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Can vitamin B-6 levels in the body be depleted by carbidopa, a drug taken in combination with levodopa for Parkinson's disease? Find out what evidence suggests in our updated CL Answer about supplements for Parkinson's disease.

Essential Tremor & Meat

8/19/2022
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Does consumption of meat increase the risk of essential tremor? Find out what's known in our updated CL Answer about supplements for essential tremor.

Also find out if magnesium is beneficial for essential tremor.

Music for Better Sleep

8/19/2022
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Can listening to music before bedtime improve sleep quality? Find out what research suggests in our updated CL Answer about supplements and lifestyle interventions for sleep.

Supplements for Dry Eye

8/19/2022
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We added information about the following topics to our article about supplements and lifestyle modification for dry eye:

More Tips on How to Take Pills

8/19/2022
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We added more information (about head position) to our article 6 Tips to Avoid Getting a Pill Stuck in Your Throat.

How to Minimize Carcinogen in Sunscreens

8/19/2022
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Benzophenone is a carcinogen found in sunscreens made with oxybenzone or octocrylene. In addition to seeking sunscreens that don't contain these compounds, a recent study provided insights on how to further minimize benzophenone exposure, which we've added to our article about sunscreen safety. Also see our list of safer sunscreens.

Can-C Eye Drops for Dry Eye?

8/23/2022
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A product called Can-C Eye Drops has been promoted for improving dry eye as well as reducing the risk of cataracts. Does the evidence support this? Find in our updated CL Answer about supplements for dry eye.

NAC + Glycine for Aging?

8/23/2022
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Supplementing with N-acetylcysteine (NAC) and glycine may have antiaging effects, according to recent studies described in the What It Does section of our NAC Supplements Review. However, as we point out, these studies have important weaknesses.

Swallowing Pills

8/23/2022
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Does cold or warm liquid make swallowing pills easier? Find out in our updated article 6 Tips to Avoid Getting a Pill Stuck in Your Throat.

Broccoli Compound for Brain Health?

8/23/2022
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Can supplementing with sulforaphane (obtained from broccoli) improve cognitive function and memory in older adults? Find out what a recent study showed in our updated CL Answer about supplements for cognition.

CoQ10 and Blood Sugar

8/23/2022
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Moderate doses of CoQ10 may lower blood sugar and improve insulin sensitivity in some people, but higher doses may not, according to a recent study. Get the details in the What It Does section of our CoQ10 and Ubiquinol Supplements Review.

Also see: Which supplements and foods can help lower or control blood sugar?

Tart Cherry Juice for Sleep?

8/23/2022
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Can tart cherry juice or supplements improve sleep? Find out what a recent study showed in our updated article about the health benefits of tart cherry juice.

How to Get UV-A Protection from Sunscreen

8/23/2022
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UV-A radiation from the sun causes wrinkles and age-spots. Many people don't realize that SPF values on sunscreens refer only to UV-B protection. Find out what to look for on labels to determine UV-A protection.

We've also updated our list of sunscreens made with safer ingredients.

Oral Minoxidil for Hair?

8/23/2022
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Use of minoxidil as an oral treatment for hair growth is gaining in popularity - although it's not an FDA approved use of this drug. Learn if it works, dosage, and side effects in our CL Answer about supplements and topical treatments for hair.

Hair Growth Compared

8/26/2022
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Lion's Mane for Depression, Anxiety, Gut Health

8/26/2022
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Does lion's mane (promoted for memory) help with depression, anxiety or gut health? See our article about lion's mane.

Licorice Concern

8/26/2022
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Some licorice candies, ice creams and teas may be unsafe due to excessive amounts of the compound glycyrrhizin in these products, according to a recent study. Get the details in our updated article about Throat Coat tea and other licorice-containing products.

NAC on Amazon

8/26/2022
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NAC (N-Acetyl Cysteine) supplements are being sold again on Amazon, after the retailer removed them from its site last year. Find out why in our updated NAC Supplements Review.

Fish Oil for High Cholesterol, Depression

8/30/2022
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Separate studies looked at whether or not taking fish oil can lower high cholesterol levels or reduce depression. See the details in our Fish Oil Supplements Review.

If you take a statin, read about the pros and cons of taking fish oil with statins.

Also see our article that discusses other supplements for high cholesterol.

Ashwagandha for Better Sleep?

8/30/2022
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Can ashwagandha improve sleep? See what a recent study found in the What It Does section of our Ashwagandha Supplements Review.

Also learn about supplements for insomnia.

Getting Minoxidil for Hair

8/30/2022
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A CL Member asked how to get low-dose minoxidil (for hair growth), since it usually comes in higher-dose tablets. Find out in our article about supplements and treatments for hair.

Tea Tree Oil Toxicity

8/30/2022
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Is tea tree oil safe to use around the eye? Be careful -- it can potentially cause eye injury.

There is also concern that tea tree oil can cause growth of breast tissue in young boys. Learn more about this in the Cautions and Concerns section of our Lavender and Tea Tree Essential Oils Review.

Four More Days to Get COVID Tests

8/30/2022
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If you haven't already ordered yours, you have only until September 2 to receive at-home COVID tests from the U.S. government without cost. These may be particularly useful if cases rise in the fall and winter. Get the details in our article about Finding the Best COVID Tests.

September

What’s in Gatorade?

9/02/2022
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We were surprised by what we found testing Gatorade Gatorlyte and DripDrops ORS which we added this week to our Electrolytes Review.

OTC Hearing Aids

9/02/2022
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Starting in October, hearing aids will be sold over-the-counter and at lower cost than prescription hearing aids. Learn what to expect.

CoQ10 for Statin-Related Muscle Pain?

9/02/2022
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Can CoQ10 supplementation reduce muscle pain in people taking cholesterol-lowering statin medication? See what a recent study found in the What It Does section of our CoQ10 and Ubiquinol Supplements Review.

Also see: When taking a statin drug like Lipitor or Crestor, are there supplements I should avoid or take?

Toxin in Fish Oil Supplements?

9/02/2022
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Should you be concerned about toxic PFAS (per- and polyfluoroalkyl substances) in fish oil supplements? Find out what a recent study suggests in the Contaminants in Fish vs. Supplements section of our Fish Oil Supplements Review.

Also see our CL Answer about PFAS.

Black Tea for Heart Health?

9/02/2022
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Drinking green tea has been linked with reduced risk of death due to heart disease, but how about black tea? See what a recent study found in the Cardiovascular Disease section of our Green Tea Supplements and Drinks Review.

Lithium for Dementia?

9/02/2022
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Does low-dose lithium stabilize or improve cognitive function in people with Alzheimer’s or other forms of cognitive decline? Find out in the What It Does section of our Low-Dose Lithium Supplements Review.

Also see our CL Answer about supplements for brain function.

CoQ10 for Post-COVID Fatigue?

9/02/2022
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Can CoQ10 supplementation reduce physical and mental fatigue in people experiencing prolonged COVID symptoms? See what a recent study found in the What It Does section of our CoQ10 Supplements Review.

Omicron-Targeting Boosters

9/02/2022
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The FDA has now authorized updated Pfizer and Moderna boosters. Find out who is eligible to get these shots and when, and learn who can still get the original boosters, in our updated CL Answer about COVID-19 vaccines.

Fish Oil + Statins for "Bad" Cholesterol

9/07/2022
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Does adding high-dose fish oil to statin therapy help reduce "bad" cholesterol? Find out what a recent study showed in the Taking with statins section of our Fish Oil Supplements Review.

Fish Oil & Irregular Heart Rhythm

9/07/2022
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Is fish oil supplementation linked with irregular heart rhythm (i.e., atrial fibrillation)? Find out what a recent study showed in the Concerns and Cautions section of our Fish Oil Supplements Review.

Supplement for Eye Floaters?

9/07/2022
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Did a supplement containing vitamin C, zinc, and other antioxidant ingredients help reduce eye floaters in a recent study? Find out in our article: Do any supplements help prevent or reduce eye floaters?

Collagen Concern?

9/07/2022
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Can taking too much collagen cause too much calcium in the blood? Find out in the Concerns and Cautions section of our Collagen Supplements Review.

Urolithin A for Muscle Strength?

9/07/2022
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Can supplementing with urolithin A improve strength and endurance in middle-aged women and men? Find out what a recent study showed in our updated CL Answer about urolithin A for age-related muscle decline.

Also see our answer to the question: What's the best protein to keep and gain muscle when you're older?

Booster After COVID?

9/09/2022
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If you recently had COVID, can you delay getting the new booster? Find out in the Updated COVID-19 Boosters section of our CL Answer about COVID-19 vaccines.

Also, find out if the updated boosters are available without cost.

Who Benefits Most from Paxlovid?

9/09/2022
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The efficacy of Paxlovid against severe COVID-19 infection may largely depend on the person's age, according to a recent study.

Kidney Stone Supplements

9/09/2022
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Find out how kidney stone supplements compare and learn about concerns with some of them in our article about Supplements, Foods, and Kidney Stones.

Glucosamine & Heart Disease

9/13/2022
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Is taking glucosamine for arthritis linked to the risk of cardiovascular disease? Find out in the What It Does section of our Review of Joint Health Supplements.

Are Plant Proteins Enough?

9/16/2022
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A CL Member asked if plant-based proteins provide all the essential amino acids people must get from their diet. Find out in the Protein section of our article: Top 8 Supplements for Vegetarians and Vegans.

A Caution with Low-dose Minoxidil

9/16/2022
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Although rare, be aware that serious side effects due to pharmacy errors have been reported with low-dose oral minoxidil preparations. Get the details in the How to get low-dose oral minoxidil section of our CL Answer about supplements for hair.

Caution with Vitamin C for COVID

9/16/2022
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Taking very high-dose vitamin C doesn’t seem to provide protection against COVID-19 and it may increase the rate of kidney stones, according to recent data. Get the details in the Vitamin C section of our CL Answer about Supplements and COVID-19.

Vitamin D & Frailty

9/16/2022
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Did giving vitamin D to older women and men reduce their risk of becoming frail? See what happened in a major clinical study in the What It Does section of the Vitamin D Review. Also see our Top Picks for vitamin D.

Gluten & Dry Eye?

9/16/2022
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A CL member commented that their chronic dry eye went away after eliminating gluten from their diet. Is there clinical evidence that this can help? Find out in our article about supplements and lifestyle modifications for dry eye.

Oats for Lowering Cholesterol & Improving Gut Health

9/20/2022
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Regularly consuming oatmeal may lower cholesterol and promote beneficial changes in gut bacteria in people with mildly elevated cholesterol. Get the details based on a recent study in our Oat Cereals Review.

Also see our article about supplements and foods for lowering cholesterol.

Multivitamin for Slowing Cognitive Decline?

9/20/2022
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Can taking a popular multivitamin slow cognitive decline in older men and women? Find out what a large, recent study found in the Memory and Cognition section of our Multivitamin and Multimineral Supplements Review.

Medications & Losing Hair

9/20/2022
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Best Time to Take Synthroid?

9/20/2022
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Some people find it difficult to take levothyroxine (Synthroid) in the morning as typically recommended, since this requires delaying breakfast, coffee and tea. Can taking levothyroxine at night, instead, be just as effective? Find out what research shows in our article about supplement and food interactions with levothyroxine.

Dry Mouth Spray

9/20/2022
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A CL member asked us to review the oral moisturizer Allday Dry Mouth Spray. Find out how it compares to other products, and see our Top Pick among them, in the Oral Moisturizers section of our article about the best toothpastes and other dental products.

Plant "Meats" & Kidney Stones

9/23/2022
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Some plant-based "meats" may increase the risk of kidney stones, according to a recent study. Find out which sources of plant-based meats pose the greatest risk in our CL Answer about foods and supplements that may increase the risk of kidney stones.

Humidifiers & Heavy Metal Exposure

9/23/2022
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Using the wrong kind of water in some humidifiers can cause exposure to heavy metals, according to a recent study. Get the details in the Potential problems with humidifiers section of our CL Answer about air purifiers.

Side Effects of Dry Mouth Treatments

9/23/2022
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Be aware that many products that stimulate saliva production in people with dry mouth can cause gastrointestinal side effects. Learn more in the Salivary Stimulants section of our article dental products.

Better Sleep Habits Instead of Melatonin

9/28/2022
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An expert group is encouraging parents to improve sleep habits in children rather than give melatonin, citing potential safety concerns. Get the details in the What It Does section of our Melatonin Supplements Review.

Microplastics & Blood Clots

9/28/2022
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A recent study raised concern about microplastics causing blood clots. Get the details in our Water Filter Pitchers Review.

Don't Forget About Riboflavin

9/28/2022
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A baby was recently born with severe riboflavin deficiency due to a lack of riboflavin in the mother's vegan diet and supplements. Learn more about riboflavin requirements in our B Vitamin Supplements Review.

Beta-glucan Supplements for Lowering Cholesterol?

9/28/2022
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Beta-glucan from cereals such as oats and barley may help lower cholesterol, but be aware that other sources of beta-glucan (including some supplements) may not. Find out in our CL Answer about supplements for heart health.

Plant Protein Pairings

9/28/2022
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What are the best combinations of plant-based foods to ensure proper intake of essential amino acids? Find out in the ConsumerTips section of our Protein Supplements Review.

Best Sleeping Position After Taking a Pill

9/28/2022
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Although it’s best to stay upright for at least 30 minutes after taking a pill, if you must lie down know which sleeping position is best. We’ve added this tip to our article: 6 Tips to Avoid Getting a Pill Stuck.

Spark Keto for Weight?

9/28/2022
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A CL Member asked if Spark Keto (a.k.a. K3 Spark), can help with weight management. Find out what research suggests in the Appetite Suppressants section of our CL Answer about Supplements for Weight.

Justifying Bad Red Yeast Rice?

9/28/2022
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How can a major supplement company justify selling red yeast rice that ConsumerLab discovered to be contaminated and provide barely any active compound? Find out what a CL member was told when she asked the company.

7 Supplements to Reduce Nighttime Urination

9/30/2022
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Find out which supplements may help reduce frequent nighttime urination (nocturia) in our new article 7 Supplements That May Help Reduce Nighttime Urination (And 3 That Might Not Help).

When to Take Synthroid

9/30/2022
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A CL member asked if taking levothyroxine (Synthroid) at bedtime could cause insomnia. We answered this question. We also added new information about taking levothyroxine with coffee. It’s all in our updated article about supplement and food interactions with levothyroxine.

Does MSM Help Hair and Nails?

9/30/2022
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Find out if research supports MSM (methylsulfonylmethane) for improving nails or hair in the MSM section of our Joint Health Supplements Review.

Also see our article about biotin and other supplements for hair and nails.

Glutamine Side Effects

9/30/2022
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A CL Member experienced dizziness, nausea, and anxiety after taking L-glutamine. Find out if these are known side effects of L-glutamine, and learn about other potential adverse effects of glutamine in the Concerns and Cautions section of our Muscle & Workout Supplements Review.

Also see our article about supplements that may cause dizziness.

Fish Oil for Muscle Strength?

9/30/2022
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Does supplementing with high-dose fish oil improve muscle strength or endurance in older women and men? Find out what a recent study showed in the Muscle, Strength and Falls section of our Fish Oil Supplements Review.

Also see our article about supplements to consider using when exercising (and ones to avoid).

Folic Acid & Risk of Self-Harm

9/30/2022
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Can taking folic acid (vitamin B-9) reduce the risk of self-harm and suicide? Find out what a recent study found in the Depression section of our B Vitamin Supplements Review.

October

Problem With a Preventive Drug

10/04/2022
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EVUSHELD (tixagevimab with cilgavimab) is the only product authorized for the pre-exposure prevention of COVID-19, but evidence shows it may provide less protection against Omicron variants compared to earlier strains. Get the details in our CL Answer about treatments for COVID-19.

Two More Home COVID Tests Compared

10/04/2022
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We've added information about tests from Celltrion and Indicaid to our comparisons of 12 home antigen tests for COVID.

Choline for Cognitive Function?

10/04/2022
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Did supplementing with egg powder, a source of choline, improve cognitive function in preadolescents? Find out what a recent study showed in the Memory and Cognition section of our Choline and Lecithin Supplements Review.

Also see our article about supplements and food for brain function.

Nerve Pain & Vitamin B-6

10/04/2022
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Vitamin B-6 deficiency can cause nerve pain and weakness, even resulting in inability to walk, as shown in a recent case. However, getting too much B-6 from supplements can also cause these symptoms. Find out how much B6 you should be getting in the Vitamin B-6 section of our B Vitamins Supplements Review.

For information about supplements that may help with other forms of nerve pain, see our answer to the question: Do any supplements, like Nervive, help with nerve pain, like sciatica or diabetic neuropathy?

Nighttime Urination & Supplements

10/04/2022
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We answered the following additional questions relating to our article about Supplements for Reducing Nighttime Urination:

Calcium & Synthroid

10/04/2022
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Which forms of calcium interfere with the absorption of levothyroxine (Synthroid)? Find out in the updated Concerns and Cautions section of our Calcium Supplements Review.

Taking Olive Oil as a Supplement?

10/04/2022
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A CL member asked if they should take olive oil as a supplement. Find out in our new answer to the question: Should you take olive oil as a supplement?