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CL Answers (39)

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Recalls & Warnings (114)

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Clinical Updates (64)

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3/15/2017

Anti-Inflammatory Effect of Juice Plus+?

Chronic systemic inflammation is a risk factor for cardiovascular disease, diabetes, and cancer. A recent clinical trial assessed the product Juice Plus+ for its ability to reduce this inflammation in obese men and women. The abstract of the published study indicates that it works, but the results tell a different story. For details, see the "What It Does" section of the Greens and Whole Foods Powders, Pills, and Drinks Review (which includes our tests of products) >>
12/18/2018

Comparing Beetroot Juices, Concentrates, and Powders

Nitrate is a key compound in beetroot juice products, yet most products don't list their nitrate content. A new study reveals how much nitrate is in popular beetroot juices, concentrates, and powders. Find out which contain the most or the least nitrate in our answer to the question: Can beetroot juice improve my workout performance?
5/12/2020

Low-Cal Orange Juice For Kidney Stones?

Increasing citrate intake may reduce the risk of kidney stones. Find out how effective low-cal orange juice is at increasing citrate in our answer to the question: Can lemon juice, lemonade, or other juices reduce my chances of getting kidney stones?
7/31/2021

Juices for Kidney Stones?

Are cranberry juice or apple cider vinegar good sources of citrate to lower the risk of kidney stones? Find out in our updated answer to the question: Can lemon juice, lemonade, or other juices reduce my chances of getting kidney stones?
7/24/2021

Cranberry for H. pylori Infection?

Can cranberry juice help treat H. pylori infection – a cause of stomach inflammation and ulcers? See what a new study found in the What It Does section of our Cranberry Juices and Supplements Review. Also see our Top Picks among cranberry juices and supplements.
2/01/2020

Pomegranate for Memory?

Pomegranate juice and supplements have been promoted for improving cardiovascular health, controlling blood sugar, and inhibiting prostate cancer. Most recently pomegranate juice was tested in a year-long study for its effects on memory. Find out if it helped, and see if it works for other touted uses, in the What It Does section of the Pomegranate Juice and Supplements Review Article.
5/22/2019

Does Tart Cherry Juice Help?

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?
6/15/2019

Tart Cherry for Soreness After Exercise?

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?
7/13/2019

Does Tart Cherry Improve Memory?

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?
7/31/2019

Beetroot Juice for Raynaud's?

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?
8/21/2020

Beetroot for High Blood Pressure?

Beetroot juice can lower blood pressure – but by how much? Learn what a recent study showed in our updated answer to the question: Can beetroot juice or supplements help lower my blood pressure?
7/27/2021

Cranberry for Men?

Can cranberry extract reduce urinary frequency, urgency, and infections in men with benign prostatic hyperplasia (BPH)? Find out in the What It Does section of our Cranberry Juices and Supplements Review. Also see our Top Picks among cranberry juices and supplements.
8/29/2021

Cranberry Interaction

Cranberry juice and supplements may increase the risk of bleeding in people taking the blood-thinner warfarin in some situations. Get the details about this and other drug interactions with cranberry in the Concerns and Cautions section of our Cranberry Juices and Supplements Review.
6/01/2021

Citrus And Skin Cancer Risk?

Does consuming citrus fruits and juices increase your risk of skin cancer? See what a recent study found in our update to our answer about supplements, foods, and sun damage.
10/09/2021

Tart Cherry and Blood Sugar

Does tart cherry concentrate or capsules help with blood sugar or insulin control? See what a recent study showed in our answer to the question: What are the health benefits of tart cherry juice?

Also see our answer to the question: Which supplements and foods can help lower or control my blood sugar?
11/12/2019

A Chew for UTIs?

A study investigated whether a cranberry chew could inhibit infection-causing bacteria from binding to cells (which is necessary for urinary tract infections to occur) by testing participants' urine. Find out if it worked in our answer to the following question: Can cranberry juice or cranberry supplements prevent urinary tract infections (UTIs)?
1/07/2020

Tart Cherry for Gout?

A clinical trial checked whether or not tart cherry would reduce the number of flare-ups in people with gout. Find out if it helped in our answer to the question: What are the health benefits of tart cherry juice?
7/16/2014

DHA for Periodontitis (Inflammation Around Teeth)

A new study found that giving DHA (from algal oil) along with low-dose aspirin led to greater reductions in local inflammation and pocketing around teeth than aspirin plus placebo. For more about the study, including dosage, and our tests and comparisons of algal oil supplements, see the Fish Oil and Omega-3 Fatty Acid Supplements Review (Including Krill, Algae, Calamari, Green-lipped Mussel Oil) >> 
2/28/2017

Magnesium for Leg Cramps?

Magnesium supplements are sometimes promoted for leg cramps. However, a recent study among older men and women found that taking a particular form of magnesium at bedtime did not reduce nighttime leg cramps. Get the details about the study, plus other uses of magnesium, in the "What It Does" section of the Magnesium Supplements Review (which includes our tests of products) >>
10/03/2017

Caution When Taking Epsom Salt

A case of liver injury was recently reported in a man taking a large daily dose of Epsom salt (magnesium sulfate). Get the details, plus more about safety issues with magnesium supplements in the "Concerns and Cautions" section of the Magnesium Supplements Review >>
11/07/2017

Melatonin Improves Sleep in Children with Autism

Prolonged-release melatonin helped children with autism fall asleep faster and stay asleep longer in a new study. Get the details, plus more about the best way to take melatonin to get a good night's sleep, in the "What It Does" section of the Melatonin Supplements Review >> [Also see our Top Picks for melatonin supplements in the Review.]
8/05/2015

Adverse Reactions with St. John's Wort

A recent analysis found adverse reactions associated with St. John's wort were similar to those reported for the prescription SSRI antidepressant fluoxetine (Prozac), and serious adverse reactions were most likely to occur when the herb was taken in addition to a prescription drug. Get the details, plus more about concerns and potential drug interactions and our tests of popular supplements in the St. John's wort Supplements Review >>
9/22/2015

Probiotic Increases Bowel Movement Frequency

A certain probiotic increased the number of weekly bowel movements in healthy men and women who reported a low frequency. Get the details, including brand and dosage, plus our tests of popular products in the Probiotic Supplements Review >>
8/12/2015

Curcumin May Reduce Muscle Pain After Exercise

A small study has reported that curcumin reduced muscle pain after exercise in young, healthy men. Get the details, including dosage, plus more about curcumin for other types pain and our tests of popular products, in the Turmeric and Curcumin Supplements Review >>
11/16/2016

Many Americans Not Getting Enough Potassium

Americans may not be getting enough potassium according to a new study. Get the details, plus information about how to increase your intake of potassium in the "What To Consider When Using" section of the Potassium Supplements Review >>
9/20/2016

Omega-3 and -6 Improves Reading Skills in Children

A combination of the omega-3 fatty acids EPA and DHA plus an omega-6 fatty acid improved reading skills and comprehension in school-age children. For details, including dose, see the "What It Does" section of the Fish Oil and Omega-3 and -7 Supplements Review >>
5/07/2019

Statins Plus Fish Oil?

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.
6/16/2013

Fish Oil and Stress

A new study shows that fish oil may slightly blunt some of the effects of mental stress. Get the details, plus our quality ratings of 74 supplements, in the updated Fish Oil and Omega-3 Fatty Acid Supplements Review >>
6/16/2013

Stimulant Supplements

Have you ever wondered what taking a stimulant supplement for weight management or energy might do to your body? Researchers recently gave Zantrex-3, Xenedrine EFX, Metabolift, or a brand of Guarana to young men while monitoring their heart rates and other vital signs, and recording side effects. The results raise concerns. Get the details, plus test results for 14 other supplements, in the updated Weight Supplements Review >>
6/09/2013

Curcumin May Help in Rheumatoid Arthritis

Curcumin (from turmeric) has a range of potential benefits. A recent study suggests it may also help with rheumatoid arthritis. The study used the same curcumin ingredient in some products tested for quality by ConsumerLab.com. Get the details, plus our quality ratings of curcumin supplements, in the updated Turmeric and Curcumin Supplements Review >>
6/09/2013

Vitamin C: Does It Fight Colds?

A new analysis says it can help — a little. Get the bottom line, plus test results for 27 products, in the updated Vitamin C Supplements Review >>
6/02/2013

Does CoQ10 Help the Heart?

It can for people with congestive heart failure, says a new study. Find out more about CoQ10, plus get ratings for 48 supplements in the updated Coenzyme Q10 and Ubiquinol Supplements Review >>
5/27/2013

Alzheimer's Changes Slowed with B Vitamins

A combination of B vitamins was found to slow brain loss in areas of the brain associated with Alzheimer's disease. This same combination of vitamins has also been shown to slow cognitive decline. Get the details on who may (or may not) benefit, dosage, plus test results for over 35 B vitamin supplements in the updated B Vitamin Supplements Product Review >>
5/19/2013

Creatine for Fibromyalgia

A new study shows that creatine might have a role in boosting muscle strength in patients with fibromyalgia. Get the details, plus quality ratings for creatine supplements in our updated Muscle Enhancers (Creatine and Branched Chain Amino Acids) Review >>
5/12/2013

Best Supplements for Vision (Macular Degeneration)

A major new study revealed what combination of supplements is best for slowing progression of macular degeneration -- and which don't seem to help. Get the details, plus quality ratings on over 20 vision supplements in the updated Vision Supplements Review >>
7/28/2013

Resveratrol May Blunt Positive Effects of Exercise

Although experiments in animals suggest that resveratrol improves athletic endurance, a new, placebo-controlled study in men found it to blunt some of the positive effects of exercise. Get the details plus test results for 20 resveratrol supplements and more information about resveratrol's effects in the updated Resveratrol Supplements Review >>  
8/04/2013

Supplement Helps Dry Eye

A supplement containing omega-6 (from black currant seed oil) and omega-3 fatty acids (from fish oil) was recently shown to improve symptoms of dry eye. Get the details about this formula (plus our test results of other omega-3 and -6 fatty acids supplements) in the updated Black Currant, Borage, Evening Primrose, and Flaxseed Oils Review >>
8/18/2013

Vitamin D for Hypertension?

Some studies have suggested a modest reduction in high blood pressure with vitamin D supplementation. However, a recent study did not find such a benefit - although a closer look reveals why these results may not tell the full story. Get the details, plus more information about vitamin D and cardiovascular health, and test results for 55 vitamin D supplements, in the updated Vitamin D Supplements Review >>
11/10/2013

Amino Acids Speed Recovery From Knee Surgery

A study of men and women receiving knee replacement surgery showed that taking essential amino acids (including branched-chain amino acids) twice daily before and after surgery reduced muscle loss and speeded recovery. For details, including dosage, plus our reviews of amino acid supplements, see the updated Muscle Enhancers Review >> 
7/05/2014

Curcumin Reduces Soreness After Exercise

Taking curcumin before and after intense exercise significantly reduced muscle soreness in young, healthy men, according to a new study. Get the details, including the brand and dose of curcumin used, plus our tests of curcumin supplements, in the updated Turmeric and Curcumin Supplements and Spices Review >> 
11/05/2014

Resveratrol Blunts Benefits of Exercise

A new, small study adds to the evidence that resveratrol may interfere with the positive effects of exercise. Get the details, plus evidence regarding other uses for resveratrol and our tests of products, in the updated Resveratrol Supplements Review >> 
11/16/2014

Do B Vitamins Boost Memory?

This week, a study was reported in the media suggesting that taking vitamin B-12 and folic acid does not help with memory. But a closer look at this and related studies shows a benefit for some people. Get the details, plus our tests and comparisons of B-vitamin supplements, in the B Vitamin Supplements Review >> 
2/28/2015

Alpha Lipoic Acid Improves Results When Dieting

Women who took alpha lipoic acid while dieting lost significantly more weight and body fat than those who only reduced their calorie intake, according to a new study. For the dose, how it was taken, plus our tests of popular alpha lipoic acid products, see the Alpha Lipoic Acid Review >>
8/19/2015

Cocoa Increases Blood Flow to Brain

A small study found that drinking a cocoa drink high in flavanols significantly increased blood flow to the brain, which, the researchers propose, might have potential cognitive benefits. Get the details, including dosage, plus more about cocoa and memory, and our tests of popular products, in the Cocoa Supplements and Dark Chocolate Review >>
9/02/2015

CLA Linked to Acute Hepatitis

CLA supplements are popular for slimming, but a recent report of acute hepatitis (liver inflammation) associated with use of CLA is concerning. Get the details, plus more about evidence, safety, and our tests of popular products in the CLA Supplements Review >>
9/12/2015

Cardiovascular Benefits of Cocoa Flavanols

A drink rich in cocoa flavanols modestly improved certain measures of cardiovascular health in healthy, middle-aged men and women, according to a recent study. Get the details, including dosage, plus our tests of popular products, in the Review of Cocoa Powders, Dark Chocolate, Extracts, Nibs, & Supplements >>
10/03/2015

Fish Oil for Depression

A small study found that taking EPA and DHA daily significantly reduced depression in young men and women. Get the details, including dosage, plus our tests of popular products, in the Fish Oil and Omega-3 Supplements Review >>
8/22/2014

Flaxseed Lowers Blood Pressure

Consuming milled flaxseed significantly lowered blood pressure in people with peripheral arterial disease, according to a recent clinical trial. Additional analysis of those results suggests the alpha-linolenic acid (ALA) -- an omega-3 fatty acid -- in flaxseed may be responsible for the effect. Get the details, including the amount of flaxseed used, plus our tests of flaxseed, evening primrose, borage, and other seed oils containing ALA and GLA, in the updated Flaxseed Oil, Evening Primrose Oil, Borage Oil, and Black Currant Oil Supplements Review >>   
8/02/2015

Prebiotics for Immune Health

Prebiotics are complex sugars which can support the growth of probiotic organisms in the gut. A recent study reported a specific type of prebiotic increased amounts of beneficial bacteria and improved certain markers of immune function in older men and women. Get the details, including dosage, plus our tests of popular probiotics and prebiotics in the Probiotic Supplements Review >>
10/27/2015

Prebiotic Helps With Weight

A certain prebiotic was found to increase the amount of weight men and women lost while on a calorie-restricted diet. For details, including brand and dosage, plus our tests of popular probiotics and prebiotics, see the Probiotic Supplements Review >>
11/21/2015

Ideal Vitamin D Levels to Reduce Cardiovascular Risk?

A study of a large group of Americans found that the risk of developing cardiovascular disease was 35% higher in people with low levels of vitamin D. Get the details, plus more about maintaining healthful blood levels of vitamin D, and our tests of products, in the Vitamin D Supplements Review >>

Be aware that there is also a risk of getting too much vitamin D >>
8/09/2016

Spirulina Lowers Cholesterol

Spirulina, a common ingredient in greens and whole foods supplements, was found to lower total and "bad" LDL cholesterol, but only in certain people. Get the details, plus our tests of products containing spirulina, in the Greens and Whole Foods Powders, Drinks and Pills Review >>
7/09/2014

Chlorella Lowers Cholesterol and Triglycerides

A daily dose of chlorella (an ingredient included in some "greens" and whole foods supplements) significantly reduced total cholesterol, "bad" VLDL cholesterol, and triglyceride levels in men and women with mildly elevated cholesterol. Get the details, including the dosage used, plus our tests and comparisons of supplements containing chlorella and other "greens" in the updated Greens and Whole Foods Powders and Pills >> 
7/12/2014

Whey Protein for Blood Sugar Control?

Drinking a whey protein shake before a meal improves blood sugar and insulin response in men and women with type 2 diabetes, according to a new, preliminary study. Get more details, plus our tests of protein supplements, in the updated Protein Powders and Drinks Review >>
5/13/2015

Fish Intake and Breast Cancer Risk

Women with breast cancer who consumed the most fish had a lower risk of death compared to women who did not eat fish, a new study reports. Get the details, plus evidence for the use of fish oil supplements to reduce the risk of breast and prostate cancer, and our tests of popular products in the Fish Oil and Omega-3 Fatty Acids Supplements Review >>
8/25/2020

Calcium & Artery Calcification

Is there an increased risk of coronary artery calcification with the use of calcium supplements? Find out what a recent analysis showed in the Heart Attack and Stroke Risk section of the Calcium Supplements Review. Plus, learn how much calcium one needs per day and how much, if any, can come from supplements. Also see our Top Picks for calcium.
9/03/2019

Curcumin and Crohn's Disease

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.
8/17/2016

Ginkgo for Memory and Cognition?

A branded ginkgo biloba extract improved a measure of cognition in men and women with self-reported memory impairment -- but did not improve memory. Get the details, plus more about the evidence for ginkgo and our tests of products, in the Ginkgo Biloba Supplements Review >>
11/15/2019

Fish Oil Plus Statins for High Triglycerides

This week an FDA panel recommended that a prescription fish oil be approved for use with statins in people with high triglycerides. Get the details and see how fish oil supplements compare in the Fish Oil Supplements Review. Also see our Top Picks among fish oil supplements.
11/26/2017

Signs of B12 Deficiency

B12 deficiency is not uncommon, most often affecting older people. Symptoms include anemia, fatigue, tingling in the arms and legs and loss of balance -- but a recent case report highlights a lesser-known sign of B12 deficiency. Find out more, plus how much B12 you should get in the "B12" section of the B Vitamins Review >> (Also see our Top Picks for vitamin B12 and other B vitamins.)
2/18/2020

Saffron for Better Sleep?

A recent, preliminary study suggests that saffron may help with sleep. Get the details plus information about other supplements that may help or interfere with sleep, in our answer to the question: Which supplements can help me sleep?
7/31/2021

Statins Plus Fish Oil?

Can taking high-dose omega-3s decrease triglyceride levels in people taking a statin drug? See what a new study found in the Taking With Statins section of our Fish Oil Supplements Review. Also see our Top Picks among fish oil supplements, including highly concentrated products.
11/11/2020

A Different Red Yeast Rice

A CL member asked about a newer type of red yeast rice known as Ankascin 568-R Plus. We’ve added information about it to our Red Yeast Rice Review. Also see our Top Pick for red yeast rice.

News Releases (36)

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