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2019

October
Collagen Peptides vs. Gelatin -- (10/15/2019) It has been generally believed that amino acids are more bioavailable from hydrolyzed collagen (collagen peptides) than from gelatin (which is partially hydrolyzed collagen). A new study put this to the test. See what the researchers found in the What It Is section of the Collagen Supplements Review. Also see our Top Picks among collagen supplements.
Ashwagandha for Insomnia? -- (10/15/2019) Does ashwagandha help people with insomnia fall asleep and stay asleep? See what a new study showed in the What It Does section of the Ashwagandha Supplements Review. Also see our Top Pick for ashwagandha.
Vitamin D & Blood Sugar Control -- (10/15/2019) Maintaining moderate levels of vitamin D may aid blood sugar control, but, according to a recently published study, high-dose vitamin D supplementation may not help. For details, see the Diabetes, insulin resistance and glucose control section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Black Seed Oil Concern -- (10/15/2019) A key compound in black seed oil may interact with medications, causing side effects. For details, see the Safety section of our answer to a question about black seed oil.
Eggshell Membrane for Bad Knees? -- (10/11/2019) Eggshell membrane, which naturally contains collagen, was tested as a supplement to improve knee pain, stiffness, and function. Find out if it worked in the Joint Pain section of the Collagen Supplements Review. Also see our Top Picks for collagen.
Risk from Reusing Plastic Water Bottles -- (10/11/2019) Repeatedly opening and closing plastic water bottles can pose a risk, according to a new study. Get the details in our updated answer to the question: Is it true that there are bits of plastic in drinking water and specialty salts? How concerned should I be?
Lycopene for Male Fertility? -- (10/11/2019) Read about the latest study to suggest that lycopene may improve sperm health in the What It Does section of the Lycopene Supplements Review. Also see our Top Pick for lycopene.
Caution With Probiotic & Surgery -- (10/8/2019) Use of a popular probiotic around the time of abdominal surgery increased the rate of re-admission to the hospital after surgery, according to a recent study. For details, see the What It Does section of the Probiotic Supplements Review. Also see our Top Picks for probiotics.
Melatonin & Post-Op Delirium -- (10/8/2019) Reduced melatonin levels following surgery have been implicated in the development of post-operative delirium. But does taking melatonin around the time of surgery reduce this risk? Find out in the What It Does section of the Melatonin Supplements Review. Also see our Top Picks for melatonin.
Fish Oil to Improve Cognition? -- (10/8/2019) See the results of the most recent study of fish oil to improve memory and cognition in the Memory Enhancement section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil.
Does CBD Convert to THC in the Body? -- (10/8/2019) Laboratory studies have raised concerns that CBD could convert to THC (a psychoactive compound in cannabis) after ingestion. A recent study put this to the test in people. See what happened in the What To Consider When Buying and Using section of the CBD Oil and Hemp Extracts Review. Also see our Top Picks among products.
Better Memory With Lutein? -- (10/5/2019) Lutein is often taken as a supplement to slow the progression of age-related macular degeneration. However, a study in college students suggests that supplementation with lutein may also improve aspects of memory and cognitive functioning. For details, see the What It Does section of our Vision Supplements Review.
L-Theanine for Sleep and Cognition? -- (10/5/2019) Several studies have evaluated whether a single dose of L-theanine (found in green tea) can reduce stress and anxiety. A new study has evaluated the effect of L-theanine when taken daily for several weeks. See the results in the What It Does section of the L-Theanine Supplements Review. Also see our top choices for L-Theanine.
Extra Protein During Chemotherapy? -- (10/5/2019) Is taking extra whey protein during chemotherapy helpful to malnourished cancer patients? Learn what a study found in the What It Does section of the Protein Powders, Shakes, and Drinks Review. Also see our Top Picks among protein powders.
Vitamin D and Risk of Cancer Death -- (10/1/2019) Are you more likely to survive colorectal cancer if you have higher blood levels of vitamin D? Find out in the Cancer section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Microplastics in Tea -- (10/1/2019) A new study found that brewing tea with certain tea bags can release a large amount of microplastics into the liquid. For details, see the Brewing section of our Green Tea Review. Also see our Top Picks among green tea products.
Probiotic for Cold Symptoms and Gas -- (10/1/2019) A study found that a particular probiotic strain reduced symptoms of upper respiratory infections, as well as gas, in children. For details see the Colds and acute respiratory infections section as well as the Bloating, gas, and abdominal pain section of the Probiotic Supplements Review. Also see our Top Picks for probiotics and kombucha.

September
Who's Not Getting Enough Protein? -- (9/28/2019) A recent study among older Americans identified groups that are not getting enough protein. Find out who's not getting enough protein in the What It Does section of the Protein Powders and Drinks Review. Also see our Top Picks among protein products.
Dark Chocolate for Vision Improvement? -- (9/28/2019) Does consuming flavanol-rich dark chocolate improve visual acuity? See what a recent study found in the Vision section of the Cocoas and Dark Chocolates Review. Also see our Top Picks for dark chocolate, cocoa powder, and nibs.
Lead in Turmeric -- (9/24/2019) A new report reveals that in some parts of the world where turmeric is grown, lead is being intentionally added. Find out where and why in the Quality Concerns section of the Turmeric and Curcumin Review. ConsumerLab tests all turmeric root powder products for lead and other heavy metals.
Does Green Tea Prevent Cognitive Decline? -- (9/24/2019) Does drinking green tea reduce the risk of cognitive decline and, if so, how much do you have to drink? A multi-year study addressed this question. See the results in the Memory and Cognition section of the Green Tea Review. Also see our Top Picks for green tea.
Vitamin D Sprays -- (9/24/2019) Are oral vitamin D sprays better than vitamin D capsules? Find out what studies are showing in the Oral Sprays section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Vitamin B12 & Sleepiness -- (9/21/2019) Vitamin B12 deficiency can cause a range of symptoms and, although rare, excessive daytime sleepiness is among them. Get the details about this, as well as information about other symptoms of B12 deficiency, in the B12 section of the B Vitamins Supplements Review. Also see our Top Pick for vitamin B12.
Probiotic for the Urinary Tract? -- (9/21/2019) Does taking a popular double-strain probiotic reduce the level of pathogenic microbes in the urinary tracts of women? See what a recent study found in the section about Vaginal bacterial infections of the Probiotic Supplements Review. Also see our Top Picks among probiotics.
Ashwagandha for Stress and Anxiety -- (9/17/2019) Can ashwagandha decrease symptoms of anxiety and lower levels of a stress hormone? See what a new study found in the Anxiety, Stress and Insomnia section of the Ashwagandha Supplements Review. Also see our Top Pick for ashwagandha.
Omega-3s for Cognition? -- (9/17/2019) Several studies have attempted to boost cognition and memory in healthy people using omega-3 supplements from fish or krill oil. Find out if they succeeded, including a recent study among adolescents, in the Memory Enhancement in Healthy Individuals section of the Fish Oil Supplements Review. Also see our Top Picks among products.
Fish Oil in Pregnancy? -- (9/17/2019) Several studies have evaluated the effects of taking fish oil during pregnancy, including a recent study seeking a reduction in premature births. Find out if fish oil helps in the During Pregnancy: Effects on Children section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil.
Best Supplement for Depression -- (9/10/2019) Which supplement has the strongest evidence of benefit for treating mental disorders? The answer is a particular form of fish oil to treat depression, according to a new analysis. For details, see the Depression section of the Fish Oil Supplements Review. Also see our Top Picks among products.
Apple Cider Vinegar for Type 2 Diabetes? -- (9/10/2019) Studies have shown that taking apple cider vinegar with or before a meal can reduce the subsequent rise in blood sugar. But does apple cider vinegar improve insulin sensitivity in people with type 2 diabetes? Find out what a recent study showed in the Blood Sugar Control section of the Apple Cider Vinegar Review. Also see our Top Picks for apple cider vinegar.
Ginger for Migraine? -- (9/10/2019) Can ginger reduce the frequency or severity of migraines? See what a new study found in the Migraine section of the Ginger Supplements Review. Also see our Top Picks for ginger supplements.
Probiotic to Trim Belly Fat? -- (9/7/2019) Can a probiotic reduce abdominal fat? See what studies are showing, including the latest surprising results, in the Weight section of the Probiotic Supplements Review. Also see our Top Picks for probiotic supplements.
CBD Missing in Some Products -- (9/7/2019) A class action lawsuit was filed against a popular brand after independent tests showed its products to contain much less CBD than listed. See the Quality Concerns section of the Review for details.
Vegetarian Chondroitin for Knee Pain? -- (9/7/2019) Can "vegetarian" chondroitin reduce knee pain and improve mobility? See what a recent study found in the What It Does section of the Joint Health Supplements Review. Also see our Top Picks for glucosamine and chondroitin supplements.
Collagen for Wrinkles? -- (9/3/2019) A new study put a popular branded collagen ingredient to the test, measuring its effects on collagen content in the skin and on facial wrinkles, including wrinkles around the eyes. See the results in our updated answer to the question: Do collagen or hyaluronic acid supplements really help aging or wrinkled skin?
Curcumin and Crohn's Disease -- (9/3/2019) Can curcumin help prevent recurrence in people with Crohn's disease? See what a recent study found, plus the evidence for curcumin in other conditions, in the What It Does section of the Turmeric and Curcumin Supplements and Spices Review. Also see our Top Picks for turmeric and curcumin supplements and spices.

August
Glucosamine for Hand Osteoarthritis? -- (8/30/2019) A new study suggests that glucosamine may help people with hand osteoarthritis. Get the details in the What It Does section of the Joint Health Supplements Review. Also see our Top Picks for joint health supplements.
Microplastics in Food and Water -- (8/30/2019) How many microplastic particles do we consume each year from our food and water? Find out in the updated answer to the question: Do water filters remove microplastics from tap water?
Can Yogurt Reduce Diabetes Risk? -- (8/29/2019) Increasing yogurt intake, particularly in place of certain other dairy foods, may decrease the risk of developing type 2 diabetes. For details about this and other effects of yogurt, see the Fermented Dairy Foods section of the Probiotics Supplements Review. Also see our Top Picks for probiotics.
Effect of High-Dose Vitamin D on Bones -- (8/27/2019) A 3-year study among people with osteoporosis compared the effects of moderate vs. high doses of vitamin D on bone density and bone strength. The results may surprise you. Get the details in the How Much Do You Need and How Much is Too Much? section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D supplements.
Whey Protein for Muscle Gain and Fat Loss? -- (8/27/2019) Did drinking whey protein after resistance exercise help prevent muscle loss and reduce body fat in obese women? See what a recent study found in the Building and maintaining muscle section of the Protein Powders, Shakes and Drinks Review. Also see our Top Picks for protein powders and shakes.
CBD Questioned for Epilepsy -- (8/27/2019) Although CBD has been approved in the U.S. for treating seizures associated with rare forms of epilepsy, a review in Europe raised concerns. For details see the What It Does section of the CBD Oils and Hemp Extracts Review. Also see our Top Picks among products.
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.




 

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