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2019

August
A Better CBD? -- (8/22/2019) A formulation of CBD was shown to increase CBD levels in the blood significantly more than the same amount of CBD in oil. But is this any better than simply taking regular CBD with a meal? Find out in the How to Take section of the CBD Oils and Hemp Extracts Review. Also see our Top Picks among products.
Omega-3s for Lowering Triglycerides -- (8/21/2019) Elevated triglycerides ("hypertriglyceridemia") is increasingly common in the US. High-dose omega-3s from fish oil can help, and the American Heart Association recently updated its advice about this. For details, and to learn how prescription omega-3 compares to supplements, see the Dosage section of the Fish Oil Supplements Review. Also see our Top Picks for fish oils, including highly concentrated fish oils.
Turmeric for Knee Pain -- (8/20/2019) Several short-term studies have shown moderate benefit with turmeric extracts. Get the details, including results of a recent study, in the What It Does section of the Turmeric & Curcumin Supplements and Spices Review. Also see our Top Picks among products.
Green Tea and Blood Sugar -- (8/17/2019) Can drinking green tea reduce the rise in blood sugar after a meal, and if so, is the effect greater in the morning or evening? See what a new study found in the What It Does section of the Green Tea Review. Also see our tests and Top Picks among green tea supplements, and brewable and bottled teas.
Do Probiotics Help With Bone Facture? -- (8/17/2019) Can taking a probiotic improve recovery from bone fracture in older people? See what a recent study found in the Bone Density and Fractures section of the Probiotic Supplements Review. Also see our Top Picks for probiotics.
Vitamin D for Breast Cancer? -- (8/13/2019) Some evidence suggests that having higher blood levels of vitamin D lowers the risk of breast cancer. Can very high-dose vitamin D slow tumor growth in women with breast cancer? See what a new study found in the Cancer section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D supplements.
Extra Virgin Olive Oil and Fatty Liver Disease -- (8/13/2019) Can consuming a Mediterranean diet enriched with extra-virgin olive oil decrease the incidence of non-alcoholic fatty liver disease? See what a new study found in the What It Does section of the Extra Virgin Olive Oil Review. Also see our tests and Top Picks among extra virgin olive oils.
Folic Acid and Colon Cancer -- (8/13/2019) Several studies have evaluated whether folate from food and/or folic acid from supplements affect cancer risk. Find out what a recent report suggests about long-term, high-dose folic acid supplementation in the Folate section of the B Vitamin Supplements Review. Also see our Top Picks for folic acid and other B vitamin supplements.
CoQ10 for Fibromyalgia? -- (8/10/2019) A recent study evaluated whether CoQ10 improved symptoms in patients with fibromyalgia when added to standard prescription treatment with pregabalin (Lyrica). See the results, and learn more about what CoQ10 can and cannot do in the What It Does section of the CoQ10 and Ubiquinol Supplements Review. Also see our Top Picks for CoQ10 and ubiquinol.
Vitamin D During Pregnancy -- (8/9/2019) Does giving expectant mothers a high dose of vitamin D reduce the risk of tooth defects in their children? Find out in the What It Does section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Vitamin A and Skin Cancer -- (8/6/2019) A study showed that people with higher intakes of vitamin A have a lower risk of developing squamous cell cancer of the skin. Does mean that taking a vitamin A supplement will help? Find out in the What It Does section of the Vitamin A Supplements Review, where we also discuss the risk of melanoma. (Also see our Top Picks for vitamin A supplements.)
Vitamin D & Diabetes -- (8/3/2019) Vitamin D supplementation can improve insulin sensitivity in some people at risk for type 2 diabetes according to a recent clinical study. For details about this, as well as related research, see the Diabetes, insulin resistance and glucose control section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Saw Palmetto for Prostate? -- (8/3/2019) A recent clinical study is the latest to evaluate the potential benefit of saw palmetto in reducing symptoms of benign prostatic hypertrophy (BPH) in men. Find out what this, and previous studies, have shown in the What It Does section of the Prostate Supplements Review. Also see our Top Picks for saw palmetto and beta-sitosterol supplements.
Coconut Oil In Coffee? -- (8/3/2019) Does adding coconut oil to caffeinated coffee boost physical performance? Find out what a recent study showed in the Sports Performance section of the Coconut Oil and MCT Oil Review. Also see our Top Picks among tested coconut and MCT oils.
Concerns With Colloidal Silver -- (8/3/2019) Consuming colloidal silver may affect the eyes and cause a type of vasculitis, according to recently published reports. Get the details in our answer to the question: Is ingesting colloidal silver helpful for any condition and is it safe to use?

July
Dark Chocolate & Depression? -- (7/31/2019) Are people who consume dark chocolate less likely to be depressed? Find out what a recent study showed in the Mood and Stress section of the Dark Chocolates and Cocoa Powders Review. Also see our Top Picks for dark chocolates and cocoa powders.
Fresh vs. Powdered Turmeric -- (7/31/2019) When adding turmeric to your meal, do you absorb more curcumin from freshly grated turmeric or turmeric powder? And how do these compare to curcumin powder? Learn the surprising answer in the What to Consider When Buying and Using section of the Turmeric and Curcumin Review. Also see our Top Picks for turmeric and curcumin.
Beetroot Juice for Raynaud's? -- (7/31/2019) Does drinking beetroot juice daily reduce symptoms of Raynaud's phenomenon? Learn what a recent study found in our answer to the question: Which supplements help with Raynaud's phenomenon?
Vitamin D for Depression? -- (7/27/2019) Low blood levels of vitamin D are associated with a higher risk of depression. But does taking vitamin D reduce this risk or improve mood in depressed people? Find out what recent studies have shown in the What It Does: Depression section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D among products.
Vitamin D for Allergies? -- (7/27/2019) If you already take an antihistamine for allergies, will adding vitamin D provide further benefit? Find out what a recent study showed in the What It Does: Allergies section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D among products.
MCT Oil for Strength? -- (7/26/2019) Does adding MCTs (medium chain triglycerides) to the diets of elderly people enhance the benefit they get from exercise? See what a recently published study found in the What It Does: Muscle Strength and Function section of the Coconut Oil and MCT Oil Supplements Review. Also see our Top Picks for coconut and MCT oils.
Extra Virgin Olive Oil and Diabetes -- (7/23/2019) Several studies have looked at the effects of consuming extra virgin olive oil on improving blood sugar control. The most recent study looked at whether it could delay the need for glucose-lowering medication in people with type 2 diabetes. Get the results in the What It Does section of the Extra Virgin Olive Oils Review. Also see our Top Picks among products.
Apple Cider Vinegar for Eczema? -- (7/23/2019) A study recently tested whether soaking skin in diluted apple cider vinegar would improve skin integrity in people with eczema (atopic dermatitis). See the results in the What It Does section of Apple Cider Vinegar Review. Also see our Top Picks among the products we've tested.
Arginine for Men? -- (7/23/2019) Does daily arginine supplementation enhance the effect of a popular prescription medication for men? See what a recent study found in the What It Does section of the L-Arginine Supplements Review. Also see our Top Picks for arginine.
CBD Interactions -- (7/20/2019) CBD can interact with many medications, and we've just added more to the list based on a recently published review of CBD safety. Learn more in the Concerns and Cautions section of the CBD Oils and Hemp Extracts Review. Also see our Top Picks among products.
Zinc for Canker Sores? -- (7/20/2019) We've added information about zinc to our answer to the question: Can lysine, vitamin B-12, or other vitamins or minerals help prevent or reduce canker sores?
Is Niagen Safe? -- (7/20/2019) Niagen (nicotinamide riboside) was recently studied for its safety and ability to raise NAD+ in the body. See the results and learn more about this form of niacin (which is also in the product Basis) in the Niacin section of the B Vitamin Supplements Review. Also see our Top Picks for niacin and other B vitamin supplements.
Is Methylfolate the Best Form of Folate? -- (7/16/2019) Methylfolate has been promoted as a better form of folate (vitamin B9), particularly for people with certain common genetic variations. A clinical study recently put methylfolate to the test against folic acid and folinic acid. The results were surprising. Get the details in the Folate section of the B Vitamin Supplements Review. Also see our Top Picks among folate and other B vitamin supplements.
Do Vitamin Patches Work? -- (7/16/2019) We've added important new information to our answer to the question: Do Vitamin Patches Work?
Has UC-II Collagen Changed? -- (7/16/2019) UC-II is an undenatured collagen that may reduce knee pain. However, one of the more recent studies reported that it contained much less collagen than reported in earlier studies. Has UC-II changed? Find out in our updated answer to the question: What is UC-II and does it help joints?
NAC for Parkinson's? -- (7/16/2019) A recent, preliminary study suggested that NAC (N-acetyl-cysteine) given orally and intravenously improved symptoms in Parkinson's disease patients. For details, see the What It Does section of the NAC Supplements Review. Also see our Top Picks for NAC as a powder, capsule, and tablet.
Does Tart Cherry Improve Memory? -- (7/13/2019) Can tart cherry juice improve memory and cognitive function? See the results of a recent study in our full answer to the question: What are the benefits of tart cherry juice?
Liver Toxicity With Turmeric -- (7/13/2019) Although uncommon, there are now several recent reports of liver toxicity associated with turmeric or curcumin supplements. Get the details in the Concerns and Cautions section of the Turmeric and Curcumin Supplements Review. Also see our Top Picks for turmeric and curcumin.
Ginger's Blood-Thinning Effect -- (7/13/2019) If you supplement with ginger, be aware of its blood-thinning effect, as exemplified in a recent case report. For details, see the Concerns and Cautions section of the Ginger Supplements & Ales Review. Also see our Top Picks among products.
Vitamin D for Depression? -- (7/9/2019) Can supplementing with vitamin D help people who suffer from depression? Recent studies suggest it may benefit some. See the details in the What It Does section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Casein Peptides for Better Sleep? -- (7/6/2019) People with difficulty sleeping were given a casein hydrolysate to see if it would help them sleep. Find out if it worked in the Casein section of the Protein Powders, Drinks and Shakes Review. Also see our Top Picks among casein and other protein products.
Infection from Probiotic -- (7/6/2019) Although rare, be aware that infections have occurred in some people due to the probiotics they have taken. For details about recent cases, see the Concerns and Cautions section of the Probiotic Supplements Review. Also see our Top Picks among probiotics.
Best Way to Take CBD -- (7/2/2019) If you use CBD, it's important that you take it in a way that maximizes its absorption. To learn more, see the What to Consider When Using section of the CBD Oils and Hemp Extracts Review, where you'll also see results of a new study showing that how you take CBD may dramatically affect how long it remains in your body. Also see our Top Picks among products.
Adding Fish Oil to Statins? -- (7/2/2019) Does adding high-dose fish oil help reduce triglycerides in people who already take statins? See the results of a new study in the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks among fish oils.
Licorice Danger -- (7/2/2019) A woman suffered a stroke after consuming a supplement for indigestion that contained a large dose of licorice. Get more details in our answer about licorice tea.

June
Fish Oil Heart Claim -- (6/29/2019) You'll start seeing a new heart health claim on fish oil supplements as well as foods that provide the omega-3's EPA and DHA. While legal, the claim is a bit fishy. Get the details in the Fish Oil Supplements Review as well as the Canned Tuna and Salmon Review. Also see our Top Picks for fish oil supplements and canned fish.
Popular Probiotic -- What's In a Name? -- (6/29/2019) Does the popular probiotic VSL#3 contain a different formula than used in the clinical studies supporting its benefits? Find out in the What to Consider When Buying section of the Probiotics Supplements Review. Also see our Top Picks for probiotic supplements.
Prebiotic for Insulin Sensitivity -- (6/25/2019) Does consuming a prebiotic improve insulin sensitivity in overweight people? See what a study recently found in the All About Prebiotics section of the Probiotic Supplements Review.
CBD Interaction -- (6/22/2019) Taking CBD along with anti-seizure medication was recently reported to raise blood levels of the medication by as much as 280%. CBD can interact with many medications. For details, see the Concerns and Cautions section of the CBD Oils and Hemp Extracts Review. Also see our Top Picks among products.
Yogurt and Colorectal Cancer -- (6/22/2019) Does regular consumption of yogurt affect the risk of colorectal polyps and colorectal cancer? Find out what studies are showing in the Fermented Dairy Foods section of the Probiotic Supplements Review.
Vitamins Needed by Pregnant Women -- (6/22/2019) A recent analysis of nutrient intakes by pregnant women across the U.S. revealed the vitamins and minerals they were getting too much or too little of. Get the details in the Prenatal section of the Multivitamins Review, which includes our tests of prenatal supplements.
NAD+ and Cancer? -- (6/19/2019) Supplements that raise NAD+ levels in the body have been promoted for anti-aging effects. But there is a theoretical risk that they could stimulate cancerous cells, and a CL member reported this week that a supplement containing such an ingredient, nicotinamide riboside, appeared to increase his PSA level. Learn more in the Niacin section of the B Vitamin Supplements Review.
Melatonin for PCOS? -- (6/18/2019) Can melatonin help women who suffer from polycystic ovary syndrome (PCOS)? See what a recent study found in the What It Does section of the Melatonin Supplements Review. Also see our Top Picks for melatonin.
Fish Oil for Heart Failure? -- (6/18/2019) Can taking fish oil improve heart function in people with chronic heart failure? See the results of a recent study (and find out what type of fish oil was used) in the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks for fish oils.
Tart Cherry for Soreness After Exercise? -- (6/15/2019) Can tart cherry juice improve muscle recovery and reduce soreness after exercise? See what a new study found in our update to the question: What are the benefits of tart cherry juice?
Cocoa & Physical Performance -- (6/15/2019) Can a cup of cocoa a day improve physical performance? See what a recent study found in the What It Does section of the Dark Chocolate and Cocoa Review. Also see our Top Picks for cocoa powders and dark chocolates.
Glyphosate in Cheerios -- (6/14/2019) A new report shows the amounts of the herbicide glyphosate in oat cereals, like Cheerios, and oat-based snacks. Should you be concerned? See our updated answer to the question: How concerned should I be about glyphosate in foods and supplements?
Reaction to CoQ10 and Alpha-Lipoic Acid -- (6/12/2019) An autoimmune syndrome possibly caused by CoQ10 was recently reported. It is similar to rare cases caused by alpha-lipoic acid. For details see the updates to the Concerns and Cautions sections of the CoQ10 and Alpha Lipoic Acid Reviews.
Does Dark Chocolate Improve Mood? -- (6/11/2019) A recent study evaluated whether eating dark chocolate improved mood and reduced levels of cortisol, a stress hormone. See the results in the What It Does section of the Dark Chocolate and Cocoa Review. Also see our Top Picks among products.
Vitamin D for Diabetes Prevention -- (6/9/2019) Does high-dose vitamin D help prevent people with pre-diabetes from progressing to type 2 diabetes? See the results of a major new study in the What It Does section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Turmeric (Curcumin) and Fatty Liver Disease -- (6/8/2019) Several studies suggest that curcumin supplements (from turmeric) may be helpful to people with non-alcoholic fatty liver disease. For details, see the What It Does section of the Turmeric & Curcumin Supplements Review. Also see our Top Picks among products.
Liver Injury With Turmeric -- (6/8/2019) Another case of liver injury from a turmeric/curcumin supplement was recently reported. Although not common, it is important to be aware of this potential risk. For details, see the Concerns and Cautions section of the Turmeric & Curcumin Supplements Review.
Avoiding Microplastics in Bottled Water -- (6/8/2019) There is increasing evidence of microplastics appearing in water -- including a study of popular bottled water brands. See the results in our answer to the question: Is it true that there are bits of plastic in drinking water and specialty salts? How concerned should I be?
Dangerous Compound Found in CBD Oil -- (6/4/2019) A "CBD oil" was found to contain a dangerous, synthetic cannabinoid. For details, see the Concerns and Cautions section of the CBD Oils and Hemp Extracts Review. Also see our Top Picks among products.
Vitamin D for Psoriasis? -- (6/2/2019) A recent study evaluated the effects of giving high-dose vitamin D to people with plaque psoriasis. See the results in the What It Does section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Be Careful with Yohimbe -- (6/1/2019) Yohimbe is a common ingredient in certain supplements for men but can be dangerous, as evidenced by recent report. Get the details in the Concerns and Cautions section of the Review.

May
Licorice Tea Caution -- (5/31/2019) Be careful with licorice tea because it can cause serious side effects, as recently happened to a man who drank one to two cups daily. Get more details in our answer about licorice tea.
Vitamin B12 & Depression -- (5/28/2019) Deficiencies in B vitamins, such as B12, can cause depression. A recent study suggests that, in pregnant women, even low-normal B12 levels are associated with a much higher risk of depression. For details, see the Depression section of the B Vitamin Supplements Review. Also see our Top Picks for B vitamins.
Glucosamine & Eye Pressure -- (5/28/2019) Glucosamine may increase eye pressure in people with glaucoma or intraocular hypertension. But does it have this effect in people who don't have these conditions? See what a new study found in the Concerns and Cautions section of the Joint Health Supplements Review. Also see our Top Picks for glucosamine and chondroitin.
Concern With a Colorant -- (5/25/2019) Titanium dioxide is a common white colorant in foods and supplements. A recent study in mice, however, suggests that it may affect the gut. For details, see the updated Titanium Dioxide section of the Inactive Ingredients/Excipients article.
Does Tart Cherry Juice Help? -- (5/22/2019) A recent clinical trial investigated the effects of Montmorency tart cherry juice on blood sugar control, markers of inflammation, and the gut. Find out if it helped. See our updated answer to the question: What are the benefits of tart cherry juice?
Liver Injury With Ashwagandha -- (5/22/2019) Although rare, several cases of liver injury associated with the use of ashwagandha supplements were recently reported. See the details in the Concerns and Cautions section of the Ashwagandha Supplements Review. This has affected our selection of a Top Pick.
Reducing Drug Craving -- (5/22/2019) High-dose CBD may help reduce drug cravings in people with heroin use disorder according to a recent study. For details, see the What It Does section of the CBD Oils and Hemp Extracts Review. Also see our Top Picks among products.
Vitamin D-Autism Study Retracted -- (5/20/2019) A study that showed a benefit in giving high-dose vitamin D to children with autism spectrum disorder has been retracted due to a lack of confidence in the findings by the editors of the journal in which it appeared. For details, see the What It Does section of the Vitamin D Supplements Review.
Hip Fracture Risk with B6 -- (5/18/2019) Another study has shown a significantly increased risk of hip fracture with high intakes of vitamin B6 from supplements. For details, see the B-6 section of the B Vitamins Review. Also see how much B6 is in popular B vitamin supplements and our Top Picks.
Misdiagnosed B12 Deficiency -- (5/18/2019) Vitamin B12 is needed to make the genetic material in all cells. Consequently, B12 deficiency can cause a wide range of symptoms and may be misdiagnosed as other diseases. Read about two recent cases of misdiagnosed B12 deficiency in the Cobalamin (B12) section of the B Vitamin Supplements Review. Also see our Top Picks for B12.
Phytoceramides for Aging Skin? -- (5/18/2019) Can phytoceramide supplements reduce wrinkles and improve the appearance of aging skin? See what a recent study found in our updated answer to the question: What are phytoceramides? Do phytoceramide supplements really work to improve aging skin?
How Do "Overnight Oats" Affect Blood Sugar? -- (5/15/2019) We recently reported on the effects of various types of oats on blood sugar. A study by the same researchers has evaluated overnight oats — rolled oats soaked overnight in milk. Find out how overnight oats compare, see the Oat Cereals Review. Also see our Top Picks among oat cereals.
Vitamin D and Sunscreen -- (5/15/2019) Is it possible to protect your skin from sunburn but still produce vitamin D? See what a recent study found in the Getting vitamin D from sunlight section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Glucosamine and Heart Disease -- (5/15/2019) Does taking glucosamine affect your risk of developing cardiovascular disease? See what a large study recently found in the What It Does section of the Joint Health Supplements Review (Glucosamine, Chondroitin, MSM and Boswellia). Also see our Top Picks among joint health supplements.
Best Oats for Controlling Blood Sugar? -- (5/11/2019) A recent study compared the effects on blood sugar and insulin levels of steel-cut oats, old fashioned rolled oats, instant ("quick") oats, and honey nut oat cereal. The surprising results are found in the Oat Cereals Review. Also see our Top Pick for oat cereals.
MCT Oil for Cognition? -- (5/11/2019) It has been speculated that people with certain forms of cognitive impairment may benefit from consuming medium chain triglycerides (MCT oils). See what a recent clinical trial found in the What It Does section of the Coconut and MCT Oils Review. Also see our Top Picks among products.
Gummies vs. Tablets for Vitamin D -- (5/11/2019) Are gummy supplements better than tablets for getting vitamin D? See the results in the What to Consider When Buying section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Statins Plus Fish Oil? -- (5/7/2019) Does high-dose fish oil provide additional coronary benefit to people already taking a statin drug? Find out in the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks among fish oils.
Vitamin D for Vertigo? -- (5/7/2019) Vitamin D may be beneficial in preventing recurrence of a common form of vertigo known as benign paroxysmal positional vertigo (or BPPV) according to a preliminary study. For details, see the What It Does section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Probiotic for Anxiety? -- (5/4/2019) A number of studies have evaluated probiotics for reducing anxiety, stress, and depression. See the results of the latest study in the What It Does section of the Probiotic Supplements Review. Also see our Top Picks among probiotics.

April
Saffron for Vision -- (4/30/2019) Saffron, which contains carotenoids, may improve visual acuity in people with age-related macular degeneration (AMD) according to a recent study. For details, see the ConsumerTips section of the Vision Supplements Review. Also see which vision supplements most closely resemble the ideal formula to slow the progression of AMD.
No Ginseng In Ginseng Tea? -- (4/27/2019) A popular maker of bottled teas is being sued for allegedly not putting ginseng in its ginseng green tea. For details, see the Quality Concerns section of the Ginseng Supplements Review. Also see which ginseng products were Approved by ConsumerLab (and see our tests of various Green Teas).
Probiotic for Diverticulitis -- (4/27/2019) Giving a specific probiotic to people hospitalized for acute diverticulitis was found to reduce pain, inflammation, and the duration of their hospital stays. Get the details in the What It Does section of the Probiotic Supplements Review. Also see our Top Picks for probiotics.
Vitamin D & Incontinence -- (4/27/2019) Does giving high-dose vitamin D help women who have urinary incontinence? See what a recent study found in the What It Does section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Fish Oil During Pregnancy -- (4/23/2019) Does taking fish oil during pregnancy yield children with higher IQs? Find out what studies are showing in the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil supplements and other sources of omega-3 fatty acids.
Curcumin for Asthma? -- (4/20/2019) Find out if curcumin (from turmeric powder) decreased asthma symptoms in a recent study, as described in the What It Does section of the Curcumin and Turmeric Supplements & Spices Review. Also see our Top Picks for curcumin and turmeric supplements.
CBD for Post-traumatic Stress Disorder (PTSD)? -- (4/19/2019) Can moderate doses of CBD help people with post-traumatic stress disorder? See the latest clinical findings in the What It Does section of the CBD Oil and Hemp Extract Supplements Review. Also see our Top Picks for formulations of CBD.
Creatine for Older People -- (4/16/2019) Creatine may boost the benefits of resistance exercise for older people, according to recent studies. For details, including dosage, see the What It Does section of the Creatine Supplements Review. Also see our Top Picks for creatine.
Problems With Green Coffee Bean -- (4/16/2019) A recently published analysis found that many green coffee bean extract supplements provided much lower amounts of key compounds than listed — a finding consistent with ConsumerLab's own Review. For details, see the ConsumerTips section of the Green Coffee Bean Extract Supplements Review.
Ginseng Interaction? -- (4/16/2019) Liver injury was recently reported in a man who began taking a Siberian ginseng supplement in addition to his prescription statin medication. Get the details in the Concerns and Cautions section of the Ginseng Supplements Review.
Maca for Improved Functioning? -- (4/13/2019) Do maca supplements improve functioning and lessen fatigue? A recent study found different results for men and women. Get the details in the What It Does section of the Maca Supplements Review. Also see our top choices among maca products.
Does Vitamin D Improve Cancer Survival? -- (4/13/2019) Does giving high-dose vitamin D to people with cancer of the colon or other parts of the digestive tract improve survival rates? Find out what recent studies are showing in the What It Does section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D supplements.
Food vs. Supplements for Getting Vitamins & Minerals -- (4/12/2019) We've added new information to our answer to the question Is it better to get vitamins from foods or supplements, and are natural vitamins better than synthetic vitamins? The new information is based on an investigation of the association between nutrient intakes and the risk of dying from cancer and/or other causes.
Powerful Combination for Alzheimer's -- (4/9/2019) Fish oil can help people with Alzheimer's disease but, as a new study suggests, only when they are getting enough of another nutrient. Get the details in the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks among products.
Vitamin D & Kidney Failure -- (4/9/2019) Although rare, excess intake of vitamin D can lead to kidney failure. This recently happened to a man taking a higher dose of vitamin D than he thought. Learn more in the Concerns and Cautions section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D supplements.
Lunasin to Lower Cholesterol? -- (4/9/2019) Can taking lunasin, a protein isolated from soy, help to lower LDL cholesterol and triglyceride levels? See what a new study found in our updated answer to the question: What is lunasin and does it really reduce cholesterol?
Vitamin D for Depression? -- (4/6/2019) Can supplementation with vitamin D help people diagnosed with depression? Learn what the latest studies are showing in the What It Does section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D supplements.
Green Tea and Breast Cancer -- (4/2/2019) Drinking green tea has been associated with a reduced risk of breast cancer recurrence. But what effect does high-dose green tea extract have? See what a major study found in the What It Does section of the Green Tea Review. Also see our Top Picks among green tea products.

March
Green Tea for Lowering Blood Pressure -- (3/30/2019) Drinking green tea can help lower high blood pressure — and even reverse ventricular hypertrophy, according to a new study. For details, including the amount and brand of tea used, see the What It Does section of the Green Tea Review. Also see our Top Picks for green tea.
Apple Cider Vinegar & Diabetes -- (3/30/2019) Can apple cider vinegar help control blood sugar in people with type 2 diabetes? See what a recent study found in the What It Does section of the Apple Cider Vinegar Review. Also see our Top Picks for apple cider vinegar.
Curcumin Interactions -- (3/30/2019) Curcumin (from turmeric) can interact with a variety of medications, requiring discontinuation of curcumin or adjustment in medication dosage. The most recently reported interaction is with tamoxifen. For details, see the Concerns and Cautions section of the Turmeric and Curcumin Supplements and Spices Review. Also see our Top Picks among products.
Curcumin Caution: May Lower Iron -- (3/27/2019) If you're low in iron, be careful with high doses of curcumin (turmeric extract). See the Concerns and Cautions section of the Curcumin and Turmeric Review. Also see our Top Picks among products.
Red Yeast Rice & Liver Injury -- (3/26/2019) Hepatitis was recently reported in a woman in the U.S. who was taking a red yeast rice supplement. Other cases have been reported. For details, see the Concerns and Cautions section of the Red Yeast Rice Supplements Review. Also see our Top Pick among products.
Vitamin C Blunts Exercise Benefits -- (3/26/2019) If you are trying to build muscle with resistance exercise, go easy on vitamins C and E, according to a recent study. Get the details in the Concerns and Cautions section of the Vitamin C Supplements Review.
Calcium Supplements and Macular Degeneration -- (3/23/2019) Two large studies have sought to determine if there is an association between calcium supplementation and the risk of developing age-related macular degeneration (AMD). See what they found in the What It Does section of the Calcium Supplements Review. Also see our Top Picks among calcium supplements.
New Potassium Recommendations -- (3/22/2019) The amount of potassium needed to achieve nutritional adequacy was officially reduced this month for all ages. Find out why and get the new recommendations in the What to Consider When Using section of the Potassium Supplements Review. Also see our Top Picks for potassium supplements.
Hot Tea & Cancer -- (3/20/2019) Drinking very hot tea increases the risk of developing esophageal cancer. How long should you wait after brewing to drink tea? Find out what recent studies are showing in the What It Does section of the Green Tea Review. Also see other tips for the best way to prepare brewable green tea, and our Top Picks among green tea products.
Melatonin for Troubled Sleep? -- (3/19/2019) Does melatonin supplementation help people with a condition involving intense dreams as well as laughing, yelling, kicking or punching during sleep? Learn what a recent study found in the What It Does section of the Melatonin Supplements Review. Also see our Top Picks for melatonin.
Prescription Fish Oil Lowers Heart Attack Risk -- (3/19/2019) A prescription fish oil was found to lower the risk of cardiovascular events such as heart attack and stroke by 30% in people at high risk. For details, see the Prescription Fish Oil vs. Supplements section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil supplements.
Vitamin D for Overactive Bladder? -- (3/16/2019) Vitamin D supplementation may help vitamin D-deficient people who suffer from urinary urgency or frequency. Get the details in the What It Does section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D supplements.
Colloidal Silver Concern -- (3/16/2019) Long-term use of colloidal silver may have contributed to the development of bone marrow cancer, according to a new report. We've added details about this to our answer to the question: Is ingesting colloidal silver helpful for any condition and is it safe to use?
Ashwagandha for Vitality? -- (3/12/2019) Did giving ashwagandha to middle-aged, overweight men improve their vitality, vigor, or levels of testosterone? Find out in the What It Does section of the Ashwagandha Supplements Review. Also see our Top Pick for ashwagandha.
Bioengineered Salmon Approved -- (3/12/2019) As of this month, genetically engineered salmon can be legally sold in the U.S. Learn how it compares to other salmon in terms of EPA and DHA in the Farmed vs. Wild Salmon section of our Fish Oil Review. (Also see the results of our tests of canned fish in the separate Canned Tuna and Canned Salmon Review.)
Boswellia for Osteoarthritis -- (3/9/2019) Boswellia extract may reduce the pain and stiffness of knee osteoarthritis. See results of a recent study in the What It Does section of the Joint Health Supplements Review. Also see our Top Picks for Boswellia and other joint health supplements.
CBD & Cancer -- (3/8/2019) Preliminary evidence suggests that CBD (cannabidiol) may have anti-cancer properties, and a dramatic reduction in tumor size was recently reported in a person taking low-dose CBD. For details, see the What It Does section of the CBD Oils and Hemp Extracts Review.
Soy Isoflavones & Breast Cancer Risk -- (3/6/2019) Soy isoflavones, which have estrogen-like effects, are used by women hoping to reduce menopausal symptoms. A new study suggests this use may raise the risk of breast cancer in some women but lower it in others. For details, see the What It Does section of the Soy Isoflavone Supplements Review.


 

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