4/20/2016

Diabetes Cured With Low Cal Diet

A recent study found that type 2 diabetes was reversed in 40% of people who followed an 8-week, very low calorie diet consisting mainly of a diet shake. Get details about the study in the "What It Does" section of the Protein Powders and Drinks Review – for Body Building, Sports & Dieting >>

2/10/2016

Extra Protein Helps During Exercise & Dieting

A study among obese young men found that giving extra protein during a period of dieting and intense exercise caused them to lose more fat and gain more muscle than men to whom additional protein was not provided. Several other recent studies in both young and old individuals have shown significant benefits from additional protein – but only when combined with exercise. Get the details in the Protein Powders and Drinks Review >>

12/09/2012

Extra Protein Improves Strength

Whether you are trying to add muscle or just maintain it, a new report suggests that additional protein leads to further gains from resistance-type training. The analysis of 22 clinical studies shows that both young and old individuals who received additional protein from supplements or high-protein foods experienced significantly greater increases in muscle mass and strength than those not getting additional protein. Get the details, as well as our tests and reviews of protein powders and drinks, in the updated Protein Powders and Drinks Review (Including Sports, Nutrition, and Diet Products). More >>

3/04/2022

Protein Shake for Weight Management?

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

2/27/2019

Many Men and Women Not Getting Enough Protein

A national study found that many older men and women don't get enough protein in their diets, including those in their 50s. For details, see the What It Does section of the Protein Powders and Drinks Review. Also see our Top Picks among protein supplements.

2/07/2018

Does Protein Hurt Bones?

It has been speculated that high-protein diets can result in calcium loss from bone. A recent study tested this. Get the results in the Concerns and Cautions section of the Protein Powders Review -- which also discusses a concern with dehydration. (If you use protein powders, see our Top Picks).

7/31/2021

Coffee And Fatty Liver Disease?

Can drinking coffee help prevent fatty liver disease and liver fibrosis (scarring)? Find out what research suggests in our CL Answer about supplements and diets for fatty liver disease.

9/25/2018

Extra Protein for Extra Muscle?

Extra protein can boost the increases in muscle strength and size that occur with strength training. But does extra protein help people already consuming adequate protein from their diets? See what a new study found in the What It Does section of the Protein Supplements Review. (Also see our Top Picks among protein powders and shakes.)

8/21/2021

Mediterranean vs. Low-Fat Diet for Arteries

A long-term study in people with coronary heart disease compared the effects of a Mediterranean diet rich in olive oil with a low-fat diet. Find out which diet decreased atherosclerosis (plaque build-up in arteries) in the Cardiovascular Disease section of our Extra Virgin Olive Oil Review. Also see our Top Picks among extra virgin olive oils.

7/27/2021

Diets for Fatty Liver Disease

Are some diets more beneficial than others for fatty liver disease? Find out in our CL Answer about supplements and diets for fatty liver disease.

2/21/2017

Mediterranean Diet with Olive Oil Improves Depression

A recent study found that men and women with major depression who consumed a Mediterranean diet with olive oil had significant improvement in symptoms compared to those who maintained their typical diet. Get the details in the "What It Does" section of the Olive Oil Review (which includes our tests of products) >>

10/01/2017

Paleo Diet and Iodine

The "Paleo" diet excludes table salt and dairy products, which are sources of iodine. A recent study investigated whether or not this causes iodine deficiency (which is also a concern with a vegan diet). Get the details in the "Iodine" section of the Multivitamin/Multimineral Supplements Review >>

7/28/2023

Diet & Dementia

Does following a healthful diet help prevent cognitive decline among older people? Find out what a recent study showed in the Diet Modifications section of our article about supplements, foods or lifestyle modifications for memory and cognition.

11/24/2015

Cocoa for Wrinkles?

A study in older women found that drinking a high-flavanol cocoa drink each day increased skin elasticity. And while wrinkles deepened among those drinking a placebo, they stayed stable in the cocoa-drinking group. For details about the amount of cocoa consumed (and its flavanol content), as well as our tests of flavanols (and contaminants) in popular cocoa powders and chocolates, see the Cocoa Powders, Dark Chocolate, Extracts, Nibs, & Supplements Review >>

6/30/2023

Protein Powder vs. Bar

Is protein better absorbed from a drink made from protein powder or a protein bar? Find out what a recent study showed in the What It Does section of our Nutrition Bars Review.

Also see our Top Picks among protein powders and drinks and Top Picks among nutrition bars.

3/21/2020

When to Eat Protein

Some evidence indicates that it is best to distribute protein across meals throughout the day to maximize protein production in muscle. A recent study suggests that there is one meal when protein intake could be higher for nearly everyone, and there is another meal when older people particularly fall short. For details see the When to Take section of the Protein Powder and Drinks Review. Also see our Top Picks for protein powders and drinks.

8/27/2019

Whey Protein for Muscle Gain and Fat Loss?

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.

4/14/2020

A Food to Slow Cognitive Decline?

Adherence to a Mediterranean diet was associated with a lower risk of cognitive impairment in a major new study, but only one food within that diet -- fish -- was also linked to slower loss of cognitive function. Find out how many servings of fish had the greatest impact in the What It Does section of the Fish Oil Supplements Review. Also see if fish oil supplements help and see our Top Picks for fish oil.

Also see our Top Picks for canned tuna and salmon.

6/15/2018

Mediterranean Diet Study Retracted

A landmark study about the benefits of the Mediterranean Diet was retracted and republished this week. Does this change what we know about the benefits of extra virgin olive oil? Find out in the Cardiovascular Disease section of the Extra Virgin Olive Oil Review. (Also see our Top Picks among extra virgin olive oils.)

8/14/2018

Red Yeast Rice and Diet

Can taking red yeast rice lower cholesterol levels on top of reductions achieved by switching to a Mediterranean diet? See what a new study showed in the What It Does section of the Red Yeast Rice Review.

Also, be aware that red yeast rice may aggravate symptoms of a neurological disorder, as described in a recent case report noted in the Concerns and Cautions section of the Red Yeast Rice Review.

3/04/2012

When Not to Take Selenium Cholesterol Lowering with Sterols/Stanols

A recent study using a popular supplement, CholestOff, showed a modest reduction in LDL ("bad") cholesterol and total cholesterol. The reductions were not as dramatic as in some other studies of sterols and stanols; possibly because participants in the study were already on a cholesterol-lowering diet. See the update to the Cholesterol-Lowering Supplements Review for details of the study, more information about the diet, and our tests of CholestOff and other cholesterol-lowering supplements. More >>

2/02/2014

Probiotic Helps Women Shed Pounds

Recently, a study found that women on a reduced-calorie diet lost significantly more weight if they took a particular probiotic than women on the same diet who took a placebo. Get details about the probiotic used and the dosage in the Probiotic 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 >>

8/10/2021

Hip Fracture Risk With Vegan Diet

Does following a vegan diet increase the risk of hip fracture in middle-aged and older women, and does supplementing with calcium and vitamin D help? See what a recent study found in the "What It Does" sections of our Calcium Supplements Review and Vitamin D Supplements Review. Also see our Top Picks among calcium supplements and vitamin D supplements.

8/17/2021

Diets to Reduce Migraine?

Certain diets are associated with fewer and less severe migraine attacks, according to a recent study. Get the details in our updated answer to the question: Do any supplements or foods help with migraine? Do any trigger migraine?

10/05/2021

Diet for Fatty Liver Disease

Find out the most important dietary considerations for people with fatty liver disease in our updated answer to the question: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?

6/01/2021

Diet And Exercise For Tinnitus?

Can dieting and exercise improve tinnitus symptoms? Find out what a recent study showed in the update to our answer about supplements and lifestyle changes for tinnitus.

11/18/2022

Olive Oil Impact on Cholesterol

Replacing saturated fat in the diet with olive oil may help lower cholesterol levels. But what happens when one adds a large amount of olive oil to the diet? See what a recent study found in the Cardiovascular disease section of our Extra Virgin Olive Oil Review.

1/10/2023

Calorie Restriction & Bone Loss

Reducing calorie intake can help with weight management but it can also lead to bone loss. Find out what experts have recently recommended to help curb bone loss and reduce fracture risk when dieting in our updated CL Answer about supplements and diets for osteoporosis.

1/24/2023

Low-Carb Diet for Heartburn?

Does a low-carbohydrate or a ketogenic diet reduce symptoms of acid reflux? Find out what research suggests in our updated CL Answer about food, supplements, and acid reflux.

Also, find out if zinc carnosine and the supplement Acid Soothe help improve symptoms of acid reflux.

3/05/2024

Sweeteners for Keto Diet

See which sweeteners are our Top Picks for those on a low-carb or ketogenic diet. We’ve added this to our article about sugar substitutes.

4/21/2020

Does Protein Powder Affect Blood Flow?

Does supplementing with whey protein isolate affect blood flow through the aorta and to the brain? Find out what a recent study found in the What It Does section of the Protein Powders & Drinks Review. Also learn what effects protein powder has on building and maintaining muscle and see our Top Picks for protein powders.

7/21/2013

Soy Protein to Prevent Prostate Cancer?

Prostate cancer occurs less frequently in parts of the world where people eat more soy. So researchers recently gave a soy protein drink, or a placebo drink, to men who previously had prostate cancer to see if it reduced the risk of the cancer recurring. Learn what they found in the updated Protein Powders and Drinks Review >>

2/23/2019

Allergic Reactions to Protein Powder

Be aware that allergic reactions to protein powders have recently been reported in people not normally allergic the protein sources of their supplements. For details, see the Concerns and Cautions section of the Protein Powders, Shakes, and Drinks Review. Also see our Top Picks for protein supplements.

10/06/2020

Can Whey Protein Control Hunger?

Can drinking a whey protein shake help control hunger in people who are overweight? Find out what a recent study showed in the What It Does section of our Protein Supplements Review. Also see our Top Picks among protein powders, shakes and drinks.

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 >>

9/19/2023

Protein After Hospitalization

Does a protein drink like Ensure Protein help with recovery after hospitalization? See what a study showed in the Recovery section of our Protein Review, which includes our Top Picks among protein powders and drinks.

2/21/2016

Gastrointestinal Side-Effects of Chlorella

In response to a CL Answer about Spirulina, CL members have reported vomiting after using another algae-based supplement, Chlorella — a common ingredient in "greens" powders and drinks. We then reviewed clinical studies of Chlorella and found high rates of other gastrointestinal side-effects. For details see the "Concerns and Cautions" section of the Greens and Whole Foods Powders and Pills Review >>

1/11/2015

More Cocoa Benefits

A recently published study showed that hot cocoa made with a flavanol-enriched powder resulted in improvements in cognitive performance as well as reductions in blood pressure and cholesterol, and improved glucose metabolism. The study was conducted in people ages 65 to 80 who drank the cocoa each morning. More details, as well as our tests of cocoa powders, are found in the Cocoa and Dark Chocolate Review >> 

2/02/2019

Whey Protein When Bedridden?

Does substituting whey protein for other sources of protein help bedridden people retain muscle mass and strength? Find out what a new study showed in the What It Does section of the Protein Powders & Drinks Review. Also see our Top Picks for protein powders.

10/05/2019

Extra Protein During Chemotherapy?

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.

6/27/2021

Whey vs Rice and Potato Protein

Whey, rice and potato proteins were found to have different effects on blood sugar and insulin levels in a recent study. Find out how they differ. You can also learn more about these and other protein sources in the ConsumerTips section of our Protein Powders, Shakes and Drinks Review. Also see our Top Picks among protein powders.

10/27/2020

Protein During Dialysis?

People on dialysis (for kidney failure) may lose protein, but do all dialysis patients benefit from protein supplementation? Find out what studies are showing in the What It Does section of our Protein Supplements Review. Also see our Top Picks for protein powders, shakes and drinks.

1/11/2022

Soy Versus Whey Protein

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

4/14/2013

Concern Over Carnitine Causing Cardiovascular Disease

Intake of L-carnitine from supplements (and from red meat) may foster atherosclerosis (hardening of the arteries), according to new research. Once ingested, L-carnitine is converted in some people to a compound which reduces the normal clearing of cholesterol from arteries.

For more details, see the updated reviews of B Vitamin Supplements & Energy Drinks and Protein Powders, as some of these products contain L-carnitine. The Acetyl-L-Carnitine Supplements review has also been updated because acetyl-L-carnitine is chemically similar to L-carnitine, suggesting a potential concern.

10/27/2015

Whey Protein and Muscle

As noted in our Protein Review, many studies show that extra protein can help build more muscle and increase strength when resistance training. But, as shown in a recent study in postmenopausal women, just eating extra protein without exercise provides no benefit. Get the details in the Protein Powders and Drinks 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 >>

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) >>

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 >>

6/08/2016

Whey Protein Improves Recovery After Hip Fracture Surgery

Whey protein improved strength and the ability to perform certain activities of daily living in older adults who underwent surgery for hip fracture, according to a recent study. Get the details, including dosage, and more about other benefits, in the Protein Powders and Drinks Review >>

4/29/2018

When to Take Protein

When is the best time of day to take a protein supplement if you want to gain muscle but lose fat? An analysis of over 30 clinical studies involving protein supplementation and resistance exercise recently addressed this question. Get the answer and details in the ConsumerTips section of the Protein Powders, Shakes and Drinks Review. (Also see our Top Picks among protein products).

5/20/2018

Protein for Exercisers

What happens when you give extra protein to women who regularly perform resistance exercise? Extra good things, according to a recent study. See the details (including dosage) in the What It Does section of the Protein Powders, Shakes, and Drinks Review. (Also see our Top Picks among protein products).

1/07/2020

When to Eat Protein

The timing of protein intake during the day was associated with greater reductions in abdominal fat and BMI (body mass index) among people engaged in exercise programs in a recent study. The timing of protein intake can also improve the likelihood of muscular benefits. For details, see the When to Take section of the Protein Powders and Drinks Review. Also see our Top Picks among protein products.

12/09/2018

When to Take Protein

Supplementing with protein can increase muscle mass and strength more than resistance exercise alone, but the timing of protein consumption can make a difference if you are also trying to improve metabolism and reduce body fat. Get the details and find out what a new study showed in the What It Does section of the Protein Powders, Shakes & Drinks Review. (Also see our Top Picks among products).

9/28/2019

Who's Not Getting Enough Protein?

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.

7/02/2017

Extra Protein Enhances Training

Even among untrained, middle-aged men, adding protein supplementation to resistance training leads to greater improvements in lean body mass (i.e., more muscle) than the training alone, according to a new study. Find out how much protein helped in the "What It Does" section of the Protein Supplements Review. The Review includes our test-based, quality ratings and comparisons of popular protein powders and drinks.

1/05/2019

Is Protein Best Before or After a Meal?

A new study showed that the timing of protein supplementation around a meal can determine the effect on blood sugar in people with insulin resistance. Find out the best timing in the update to the Protein Powders, Drinks, and Shakes Review. (Also see our Top Picks among products.)

3/20/2018

Does Extra Protein Help?

What effect does giving older men a daily protein supplement and/or a weekly testosterone shot have? Find out in the What It Does section of the Protein Powders, Shakes, and Drinks Review. The section also provides information about the effects of extra protein in other populations. (Also see our Top Picks among protein supplements.)

7/06/2019

Casein Peptides for Better Sleep?

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.

5/10/2022

Whey Protein & Blood Pressure

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

3/04/2022

Whey Protein From a Lab

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

9/22/2023

Cacao Flavanols for Mood?

Did drinking a beverage containing cacao flavanols improve mood in a recent study? Find out in the Mood and Stress section of our Dark Chocolates and Cocoa Powder Review, which includes our Top Picks for dark chocolate and cocoas.

12/15/2023

Cricket Protein and Kidneys

Cricket protein may be more environmentally friendly than animal sources of protein, but people with impaired kidney function may want to avoid consuming large amounts. Learn why in the Cautions and Concerns section of our Protein Supplements Review. Also see what we found when we tested cricket powders, and see our Top Picks for whey, soy, and other protein shakes and drinks.

10/31/2023

How to Reduce Cholesterol

The cholesterol-lowering benefits of a plant sterol supplement were enhanced when a healthful diet was followed in a recent study. Get the details in our Cholesterol-Lowering Supplements Review, which includes our Top Picks for sterols/stanols.

Also see our article about supplements and foods that can help lower cholesterol.

10/17/2023

Honey for Acid Reflux?

Can eating manuka honey help improve symptoms of gastroesophageal reflux disease (GERD)? Find out what a recent study showed in the What It Does section of our article about manuka honey.

Also see: Which supplements, foods or diet and lifestyle changes help relieve acid reflux (heartburn), and which worsen it?

11/03/2023

Collagen For Bone Health?

Is there evidence that collagen peptides (as in Fortibone) strengthen bones? Find out in the bone health section of our Collagen Supplements Review. Also see our Top Picks for collagen for skin and joint health.

Also see: Do any supplements or diets help prevent or treat osteoporosis?

12/05/2023

Fatty Liver & C15:0

Did supplementing with C15:0 help people with fatty liver disease? Find out what a recent study showed in our article about the health effects of C15:0.

Also see: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?

12/12/2023

Beans as Prebiotics

Beans can be a good source of prebiotic fiber. See what happened when one cup of beans was added to a regular daily diet in our Prebiotics Supplements Review. Also see our Top Picks among prebiotic supplements.

12/12/2023

Tocotrienols for Fatty Liver?

Does taking tocotrienols, a form of vitamin E, improve liver function among people with non-alcoholic fatty liver disease (NAFLD)? Find out what research suggests in the Liver disease section of our Vitamin E Supplements Review.

Also see: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?

3/19/2024

Olive Oil & Fatty Liver

Olive oil seems to offer benefits to people with fatty liver disease. See what a recent study showed in our Extra Virgin Olive Oil Review, which includes our Top Picks among olive oils.

Also see: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?

4/09/2024

Fish Oil and Heartburn/Reflux

In some people, fish oil causes heartburn or reflux. See tips for reducing these side effects in our Fish Oil Supplements Review, which includes our Top Picks among fish, krill, and algal oil supplements.

Also see: Which supplements, foods or diet and lifestyle changes help relieve acid reflux (heartburn), and which worsen it?

10/03/2023

Melatonin for Reflux?

Is it helpful to take melatonin when taking a proton-pump inhibitor (PPI) to improve symptoms of gastroesophageal reflux disease (GERD)? See what the latest study found in the Other uses section of our Melatonin Supplements Review, which includes our Top Picks for melatonin.

Also see: Which supplements, foods or diet and lifestyle changes help relieve acid reflux (heartburn), and which worsen it?

10/06/2023

Collagen for Stronger Bones?

Can collagen supplementation help strengthen bones? Find out what studies suggest in the Bone health section of our Collagen Supplements Review.

Also see: Do any supplements or diets help prevent or treat osteoporosis?

9/01/2023

Iron Cookware

Can cooking with cast iron cookware increase iron in your diet? Find out what research suggests in the ConsumerTips section of our Iron Supplements Review. Also see our Top Picks among iron supplements.

8/18/2023

Oxalates, Calcium, and Kidney Stones

We recently published a list of foods high in oxalate, of concern to some people with kidney stones, but be aware that overly restrictive low-oxalate diets are generally not recommended. Also learn how calcium intake affects risk, in our updated article about kidney stones.

7/18/2023

Probiotic for IBS?

Did taking a probiotic further reduce symptoms of irritable bowel syndrome in people on a low-FODMAP diet? Find out in the IBS section of our Probiotics Supplements Review.

Also see: Do any supplements help for irritable bowel syndrome (IBS)?

6/06/2023

Blueberries for Bones

The right amount of blueberries may help slow bone loss in postmenopausal women according to a new study. Get the details in our article about supplements and diets for osteoporosis.

3/07/2023

Prebiotic Diet for Mood?

Did eating foods rich in prebiotic compounds improve mood in people with moderate psychological distress? See what a recent study showed in our Prebiotics Supplements Review.

Also find out which foods are high in prebiotic fiber.

4/04/2023

Sweeteners - Aspartame Intake Limits and Side Effects

• How many diet sodas would need to be consumed to exceed the acceptable daily intake limit for aspartame?
• Have sweeteners been linked with ringing in the ears? Read about rare reports with aspartame and saccharin.
• Are tagatose or glycine good options for use as sugar substitutes?

4/28/2023

Spermidine for Memory?

Higher intakes of the compound spermidine from the diet have been associated with a lower incidence of cognitive decline, but does taking spermidine have this benefit? Find out in our article: Do any supplements, foods or lifestyle modifications help with brain function, like memory and cognition?

1/27/2023

Fish Oil & Hair

A diet extremely high in fish oil caused hair loss in a recent study in mice. Should this be a concern for people? Find out in the Concerns and Cautions section of our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

Also see: Do hair supplements, such as Viviscal, Hair La Vie, and Nutrafol, or topical essential oils work?

7/06/2022

Curcumin for Fatty Liver?

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

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

9/16/2022

Are Plant Proteins Enough?

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

9/16/2022

Gluten & Dry Eye?

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

9/28/2022

Don't Forget About Riboflavin

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

7/26/2019

MCT Oil for Strength?

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.

9/10/2017

Olive Oil and Prostate Cancer

Another possible benefit of olive oil within a Mediterranean diet is a reduced risk of aggressive prostate cancer, according to a new study. For details about this and other benefits of olive oil, see the updated "What It Does" section of the Extra Virgin Olive Oils Review, which includes our Top Picks among products.

11/24/2018

Yogurt & High Blood Pressure

Higher consumption of yogurt was associated with a lower risk of developing high blood pressure in a recent analysis. Risk was further reduced when yogurt consumption was part of a particular, healthful diet. For details, see the Fermented Dairy Foods section of the Probiotic Supplements Review.

10/23/2018

DPA -- The Other Omega-3

Studies are showing that higher blood levels of DPA (an omega-3 fatty acid obtained from fish) are associated with healthier aging and reduced cardiovascular disease. Although a cause-and-effect relationship has not been established, if you're interested in increasing DPA in your diet, we just published the amounts of DPA that we found in popular brands of canned tuna and salmon. Some had virtually no DPA, while others provided nearly 100 mg per serving. (Also see our Top Picks for Canned Tuna & Salmon.)

5/05/2018

Delaying Menopause

A new study found that diet may influence the age at which menopause occurs in women. This is important because later menopause has been associated with lower risk of many health conditions. Find out which foods are associated with later or earlier menopause in the Background section of the Menopause Supplements Review. (Also see what we found in supplements intended to treat menopause symptoms.)

8/13/2019

Extra Virgin Olive Oil and Fatty Liver Disease

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.

11/09/2019

Choline Concern

A large study found that people with higher intakes of choline from their diets had a higher risk of death, specifically cardiovascular death, than people with lower choline intakes. Should you be concerned? See the Concerns and Cautions section of the Choline Supplements Review.

2/03/2017

Cognitive Decline With Too Little B6

A recent study among men and women in their 60's found that those getting inadequate amounts of vitamin B6 in their diets had much higher rates of cognitive decline. Get the details in the "What It Does" section of the B Vitamin Supplements Review (which includes our tests of products) >>

12/09/2018

Vitamin C and Kidney Damage

High doses of vitamin C can cause kidney stones and damage kidneys. People with certain diets or medical conditions may be more prone to these problems. Get the details, including those of a recent case, in the Concerns and Cautions section of the Vitamin C Supplements Review.

6/27/2020

Factors For Lower Risk of Dementia

Diet and lifestyle factors were associated with up to 60% reductions in the risk of developing Alzheimer dementia according to a new study. Learn about these lifestyle factors in the updated answer to the question: Do any supplements really help with brain function, like memory and cognition?

9/02/2017

Extra Virgin Olive Oil Aids Fat Loss

A study among overweight women found that substituting extra virgin olive oil for another plant oil led to greater losses of body fat during dieting. See the details in the "What It Does" section of the Extra Virgin Olive Oils Review -- which includes our Top Picks among extra virgin olive oils.

8/26/2015

Do We Need More Vitamin E?

A study recently suggested that many Americans don't get optimal intake of vitamin E from their diets. A closer look at this study, however, indicates that most people in the U.S. shouldn't worry. For details see the ConsumerTips section of the Vitamin E Supplements Review >>

5/11/2017

Early Menopause & Vitamin D

Women who get more vitamin D from their diets have a lower risk of early menopause, according to a recent study. However, supplements don't seem to help. Get the details in the "What It Does" section of the Vitamin D Supplements Review >>

7/29/2015

Stanols Lower Cholesterol

Many studies have shown that plant sterols and stanols can help lower levels of LDL "bad" cholesterol. A new placebo-controlled study, which involved advice on diet and exercise, found benefit with a slightly lower dose of stanols than typically recommended. Get the details in the "What to Consider When Buying" section of the Cholesterol-Lowering Supplements Review »

7/08/2017

Magnesium Lowers Risk of Fracture

Higher intake of magnesium from the diet and supplements was found to significantly reduce the risk of fractures in a study of older men and women. Details are in the "What It Does" section of the Magnesium Supplements Review, which includes our Top Picks among products.

4/30/2016

Probiotic for Fat Loss

A new study found that a probiotic decreased body fat in overweight adults, without diet or exercise. The probiotic in the study differs from many on the market in an interesting way. Get more information about this and other studies with probiotics, as well as our tests of products, 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 >>

2/24/2013

Calcium Risk for Women

A long-term study found that women with high calcium intakes from their diets were 40% more likely to die during the study than women with moderate calcium intake. Worse, the risk of death was 157% higher for women with high dietary calcium intake who also took a calcium supplement. What should you do? Get the details in the recent update to the Calcium Supplements Review and read our latest recommendations on calcium intake in the What You Need to Know section.)

2/17/2013

Risk from Too Much Calcium from Supplements

A major study found that adequate intake of calcium from the diet and other sources was associated with a lower risk of men and women dying from cardiovascular disease over the 12-year period of the study. HOWEVER getting over a certain amount of calcium from supplements was associated with 20% higher risk of men dying from cardiovascular disease. For more information, see the recent update to the Calcium Supplements Review >>

2/26/2012

Less Stroke With More Magnesium

Slightly higher intake of magnesium from the diet was associated with an 8% lower risk of stroke, based on an analysis of several studies. This doesn't necessarily mean you should get more magnesium from supplements, though. For details, see the updated information in the Magnesium Supplement Review. More >>

9/21/2013

Fish Oil and Arthritis

A study of several thousand women found those who consumed at least a moderate of amount omega-3 fatty acids (EPA and DHA) from fish in their diets had just half the risk of developing rheumatoid arthritis over the course of the study than did women with lower intakes.  For details about the amount of omega-3's and fish consumption associated with preventing arthritis, other uses of omega-3's, and tests of fish/marine oil supplements, see the Fish/Marine Oil Supplements Review>>

8/02/2012

Vitamin E and Liver Cancer

A study has shown a dramatic decrease in the risk of liver cancer among people taking vitamin E supplements or getting higher amounts of vitamin E from their diets. But don't necessarily rush out to get vitamin E. Read the details in the update to the Vitamin E Supplements Review. More >>

9/16/2012

Vitamin D & Alzheimer's

A seven-year study of women over age 75 found those with higher intakes of vitamin D from their diets were 77% less likely to develop Alzheimer's disease. The amount of vitamin D intake associated with this large benefit was actually fairly modest. Get the details in the updated Vitamin D Supplements Review, which includes our product tests and quality ratings. More >>

3/29/2014

Vitamin D for Weight?

A study of overweight women who were dieting and exercising found that taking vitamin D did not increase the amount of weight they lost. Those attaining the highest blood levels of vitamin D did lose more weight than other women, but this may not have been due to vitamin D. For details about the study, information about other uses of vitamin D, and our tests of vitamin D supplements, see the updated Vitamin D Supplements Review >> 

11/30/2021

Nutrients In Jeopardy With a Plant-Based Diet?

Which nutrients are in jeopardy when one switches from animal to plant-based proteins? Find out what a recent study showed in the Concerns and Cautions section of our Protein Supplements Review. Also see our Top Picks among protein supplements.

12/21/2021

Vitamin C for Mood?

Can vitamin C from the diet or supplements help boost mood, including symptoms of depression? Find out what current evidence suggests in the Vitality and Mood section of our Vitamin C Supplements Review, which includes a list of foods high in vitamin C and our Top Picks for vitamin C.

10/05/2021

Copper and Alzheimer's Disease

Can excess copper from the diet or supplements increase the risk of Alzheimer’s disease? Find out what research suggests in the Copper section of our Multivitamin and Multimineral Supplements Review.

8/10/2021

Best Form of B-12 for Vegans?

What form of vitamin B-12 appeared best at raising B-12 levels among people on plant-based diets in a new study, and how did this compare to getting B-12 from plant-based foods? Find out in the B-12 section of our B Vitamin Supplements Review. Also see our Top Picks for vitamin B-12.

8/07/2021

Bergamot for Fatty Liver?

Can bergamot help reduce cholesterol or liver fat in people with fatty liver disease? Find out in our updated answer about Supplements and Diets for fatty Liver Disease.

6/22/2021

Diet and Dementia

Which foods were linked to a lower risk of dementia in a recent study? Find out in our article about supplements and foods for Memory and Cognition.

5/29/2021

Don't Do This If You Need Iron

If you're low in iron, be aware that many foods dramatically reduce absorption of iron from your diet. Teas can also have a major impact, as shown in a recent study. Get the details in the What to Avoid section of our Iron Supplements Review. Also see our Top Picks among iron supplements.

3/03/2021

Diabetes Risk With Selenium

High intake of selenium from the diet or supplements has been associated with increased risk of type 2 diabetes. Get the details in the Concerns and Cautions section of our Selenium Supplements Review.

11/18/2012

Caution with Energy Drinks

The FDA has released reports showing deaths and other serious adverse events associated with the use of energy drinks like 5-hour Energy. As ConsumerLab.com reported in September, these small "shot" drinks can pack more caffeine than 2 cups of regular coffee. While the caffeine can keep you alert, there are a number of concerns to bear in mind and suggestions on how to more safely use these drinks. Learn more in the update to our B Vitamins and Energy Drinks Review. More >>

11/17/2014

Keep Energy Drinks Away from Kids

It was reported this week that 40% of calls to poison centers for "energy drink exposure" involved children under age 6, many of whom experienced serious side effects. For more about this and other concerns with energy drinks, as well as our test results for popular products, see the B Vitamins & Energy Drinks Review >> 

2/16/2019

Energy Drinks & Aggression

Are people who frequently consume energy drinks (like 5-hour Energy) more likely to be aggressive or have mental health problems? Learn what a new study found, and learn more about the pros and cons of energy drinks in the Energy Drinks section of the B Vitamin Supplements Review.

10/12/2011

Women-Vitamin Study - Key Points

You may have heard this week about a new study which found a higher risk of death among women who used certain supplements. It's a complicated study, but we've summarized some key findings. Bear in mind that only white women ages 55 to 69 were enrolled in the study and they were followed for 22 years.

Those taking calcium supplements had a 3.8% reduced risk of death. The calcium benefit ended, however, when taking more than 900 mg per day from supplements. It's worth noting that experts suggest many older women who take calcium supplements may not need to -- see the Calcium Supplement Review for more.

The mineral most strongly associated with an increased risk of death was iron, which showed a risk increase of 3.9% -- and the risk increased as the dose increased, particularly over 50 mg per day. However, the study grouped dosages of under 50 mg together, making it hard to determine the risk of low dosages of iron, such as those in many multivitamins. However, there is very little reason why a postmenopausal woman should be taking iron -- see the Iron Supplement Review for more.

Although not as statistically meaningful, other supplements were associated with the following increases in the risk of death during the study: multivitamins (2.4%), vitamin B6 (4.1%), folic acid (5.9%), magnesium (3.6%), zinc (3.0%), and copper (18.0%). An abstract of the study is online.

The bottom line: Don't take a supplement you don't need. If you want to know how much of each vitamin and mineral you need from your total diet and how much is too much, see our chart at www.consumerlab.com/rdas/.

2/10/2021

Energy Drinks and Blood Pressure

Which people are more likely to have cardiovascular side effects from energy drinks? Find out what a new study showed in the Energy Drinks & Shots section of our B Vitamins Supplements Review.

10/08/2014

Energy Drinks: Athletic Performance & Side Effects

A recent study found that a caffeinated energy drink improved athletes' self-perceived muscle power, but also increased insomnia and nervousness. Get the details in the update to the B Vitamin Supplements and Energy Drinks Review >> 

6/21/2022

Drinking Water & PFAS

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

2/09/2024

Sweeteners for Cold Drinks

If you're trying to avoid sugar, see our top 2 sweeteners for cold drinks in our article about sugar substitutes, which also includes our top choices for hot drinks and for baking.

4/11/2023

PFAS in Drinking Water

The EPA recently proposed federal limits on PFAS, chemicals with potentially negative health effects, in drinking water. Get the details in our updated answer to the question: How can I avoid PFAS in dental floss, food, water, and other products?

11/18/2022

Is Chamomile Tea Safe?

A CL member asked if chamomile tea is safe to drink. It’s generally safe in moderation, but there are concerns with drinking large amounts and with regular consumption during pregnancy. For details, see the Chamomile tea section in our CL Answer about supplements for improving sleep.

7/22/2022

Electrolytes for Hangovers?

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

9/02/2022

Black Tea for Heart Health?

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

4/16/2024

PFAS Toxins in Drinking Water

Separately, the EPA recently finalized limits on PFAS in drinking water, but this gives water districts until 2029 to take corrective action. Learn more and see our Top Pick water filter pitcher for removing PFAS.

6/02/2013

Don't Drink Too Much Tea!

After publication of our Green Tea Review last month, a CL member emailed us about the potential danger of getting too much fluoride from tea. Although this won't happen from just a few cups of tea daily, there have been recent cases where habitually drinking extremely large amounts of tea has caused "fluorosis" causing bone pain and even tooth loss. See the warning (and our tests of green tea products) in the updated Green Tea Review >>

5/27/2013

Probiotic Reduces Abdominal Fat

A study found that giving overweight people a strain of probiotic as part of a milk drink led to reductions in abdominal fat over 12 weeks. Those receiving the drink without the probiotic had no improvement. Get details in the updated Probiotic Supplements Review >>

1/18/2014

Green Tea "Blocks" Beta-Blocker

A new study shows that drinking green tea can drastically reduce the amount of a beta-blocker (nadolol, Corgard) absorbed into the bloodstream. Beta-blockers are typically taken to lower blood pressure, raising concern for people using green tea along with this beta-blocker and, possibly, related medications. Get the details, along with our tests of green tea drinks and supplements, in the update to the Green Tea Review >>   

If you take a beta-blocker (which includes the popular drugs metoprolol (Lopressor, Toprol) and propranolol (Inderal)), be aware that chromium and CoQ10 may offer benefits.

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 >>

4/13/2014

Does Green Tea Improve Memory?

This week, news sources reported that a study found green tea helps working memory. While green tea may have benefits, a closer look at this study suggests the news was exaggerated and misleading. For details about the study (and information about other effects of green tea and our tests of green tea supplements, teas, and drinks) see the update in the Green Tea Supplements, Drinks and Teas Review >> 

3/20/2019

Hot Tea & Cancer

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.

9/04/2020

Coffee and Cholesterol

Drinking large amounts of coffee daily can increase cholesterol levels, according to a recent analysis. Get the details in our answer to the question: Is drinking coffee good or bad for heart health?

11/25/2017

How Hot Should Green Tea Be?

Drinking green tea may reduce the risk of certain cancers, but its effect on gastric (stomach) cancer may depend on the temperature at which you drink it, according to a new study. Find out what the best temperature seems to be in the "What It Does" section of the Green Tea Review >> (Also see how brands of green tea, including matcha, stack up in our tests.)

9/24/2019

Does Green Tea Prevent Cognitive Decline?

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.

12/14/2017

Danger from Too Much Vitamin B6

A women who was consuming large amounts of an energy drink as well as a B-vitamin complex developed symptoms of vitamin B6 (pyridoxine) toxicity (which may not be reversible), according to a recent report. Get the details in the "B6" section of B Vitamin Supplements Review >>

CL has long warned that energy drinks and shots often contain large amounts of B6 and other B vitamins.

12/07/2021

Can Warm Coffee Trigger Burning Mouth Syndrome?

A member asked if anyone else had experienced "burning mouth syndrome" after drinking warm coffee. Find out if drinking coffee can trigger symptoms of this known condition in the Safety section of our updated article about Coffee and Heart Health.

1/16/2021

Coffee and Prostate Cancer Risk

Is drinking coffee associated with prostate cancer risk? Find out what a recent study suggests in our updated answer to the question: Does drinking coffee increase or decrease the risk of cancer? Can it slow cancer progression?

5/01/2021

Does Kefir Lower Cholesterol?

Can drinking kefir that contains probiotics, decrease LDL cholesterol or triglyceride levels in people with metabolic syndrome? See what a new study found the Cholesterol-Lowering section of our Probiotic Supplements Review. Also see our Top Picks among probiotic supplements and drinks.

1/19/2024

How to Store Protein Powder

Learn how to properly store protein powders in the ConsumerTips section of our Protein Supplements Review, which includes our Top Picks among protein powders.

1/23/2024

Is Protein Powder Ultra-Processed?

All protein powders can be considered ultra-processed food, which has pros and cons, as discussed in our Protein Powders Review. Also see our Top Picks among protein powders and shakes.

2/03/2018

Lead in Maca Powder

A woman in California who was taking maca powder daily to treat fatigue found it was also increasing the concentration of lead in her blood. More concerning is that the amount of lead in her maca was only 1/3 the lead level in one of the popular maca powders tested by ConsumerLab.com. Get the details, and find out which maca supplements passed or failed ConsumerLab.com’s tests in the Maca Supplements Review.

7/31/2019

Fresh vs. Powdered Turmeric

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.

1/19/2024

Protein Powder Allergy?

It is possible to be allergic to a protein powder, and some potential allergens need not be disclosed as allergens on labels. Learn more in the Cautions and Concerns section of our Protein Powders & Shakes Review.

7/25/2023

Tooth Erosion & Foods

Find out which foods and drinks are associated with tooth erosion in our article about toothpastes and other dental products.

8/15/2023

Coffee & Bone Health

Does drinking coffee decrease bone density or worsen symptoms of arthritis? Find out in our article about coffee and bone health.

7/31/2019

Dark Chocolate & Depression?

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.

2/10/2018

Protein Enhances Muscle Gain in Young and Old

Consuming extra protein, up to a point, was found to help both younger and older people increase muscle strength and size as part of resistance exercise training. For details see the What It Does section of the Protein Powders Review. (Also see our Top Picks among protein powders).

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?

8/11/2020

Chocolate to Improve Body Composition?

Can eating a small amount of chocolate every day help improve body composition? Find out what a recent study showed in the What It Does section of the Dark Chocolates, Cocoa & Cacao Powders, Nibs, and Supplements Review. Also see our Top Picks for dark chocolate, chocolate chips and cocoa powders.

8/06/2020

Chocolate and Cancer

Can eating more chocolate reduce cancer risk? Find out what a recent study showed in the What It Does section of the Dark Chocolates, Cocoa & Cacao Powders, Nibs, and Supplements Review. Also see our Top Picks for dark chocolate, chocolate chips and cocoa powders.

1/12/2020

Collagen vs. Whey for Muscle

Does taking collagen protein increase muscle as well as whey protein? Find out what a recent study showed in the "Building Muscle" sections of both the Protein Powders Review and the Collagen Supplements Review. Also see our Top Picks for protein powders and Top Picks for collagen.

6/17/2020

Whey vs. Casein vs. Neither

A study among elderly men engaged in strength training compared the effects of supplementing with whey protein, casein protein, or neither. Learn what the study showed in the What It Does section of the Protein Powders Review. Also see our Top Picks among protein powders.

4/05/2020

Dark Chocolate for Memory?

Studies show that chocolate high in flavanols can improve cognition in people with cognitive decline. Can it also boost memory in people who are cognitively healthy? Find out in the Memory section of the Dark Chocolate and Cocoa Powders Review. Also see our Top Picks for dark chocolates and cocoa powders.

8/28/2018

Chocolate for the Heart?

Studies suggest cardiovascular benefits from daily intake of cocoa flavanols, as found in dark chocolate. However, a new study, focusing on heart failure, suggests more limited intake. Get the details and our analysis in the Cardiovascular section of the Dark Chocolate, Cocoa Powder, and Nibs Review. (Also see our Top Picks for dark chocolate, cocoa powders, and more.)

6/23/2023

Non-animal Whey

How do “non-animal” whey protein products such as V-Whey and Mooless compare to regular whey protein, and are they suitable for people sensitive to lactose or with milk allergies? Find out in our Protein Powders Review.

Also see our Top Picks among protein powders.

5/19/2023

Ka'Chava Superfood

We just tested Ka'Chava Superfood, a popular protein powder that also contains vitamins and minerals. See the results now in our Protein Powders and Shakes Review. Also see our Top Picks among protein supplements.

4/14/2023

When to Get Protein

For older people, a new study suggests that the timing of protein intake during the day may be important, although more research is needed. Get the details in the When to take section of our Protein Powders and Shakes Review. Also find out when to take protein around exercise for greater metabolic improvement and fat loss.

See our Top Pick among protein powders.

1/10/2023

Phytates in Pea Protein

Is pea protein powder is a significant source of the phytate, which can reduce mineral absorption? Find out what research suggests in the ConsumerTips section of our Protein Powders Review.

1/13/2023

How Much Phytate in Pea Protein?

Although not on the label, we found out how much phytate, an anti-nutrient, is in our Top Pick for pea protein powder. Learn the details and implications in our updated Protein Powders and Shakes Review.

2/28/2023

Vegan Protein for Muscle?

Can vegan protein derived from fungus (sold as Quorn) improve muscle mass and strength as effectively as milk-based protein, and is it safe? Find out in the ConsumerTips section of our Protein Powders and Shakes Review.

Also see our Top Picks among protein powders, including a product suitable for vegans.

11/08/2022

Liquid vs. Powdered Herbs?

A CL Member asked if, when taking an herbal supplement, liquids are better than powders. Find out in our answer about herbal supplements.

4/22/2022

Toothpaste vs. Tooth Powder

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

1/27/2024

BPA in Protein Powder?

Protein powders can absorb BPA (an endocrine disruptor) from plastic containers. Learn how to avoid BPA in the Quality Concerns section of our Protein Supplements Review.

6/18/2014

Does Green Tea Really Help With Weight?

A new study found that a popular green tea extract did not cause a reduction in weight compared to placebo, despite the fact that some previous studies have shown a benefit. Get more details, including which green tea extract was used, in the update to the Green Tea Supplements, Drinks and Teas Review >>   

6/20/2014

Green Tea and Liver Toxicity

Green tea extract was listed as one of the most common dietary supplements linked to liver injury in a newly published guideline for diagnosing and treating drug-induced liver injury. Find out what one of the authors of the guideline had to say about the catechin content of some green tea supplements, and get our test results showing the amounts of catechins in green tea supplements in the Green Tea Supplements, Drinks and Brewable Teas Review >>   

1/16/2015

Another Use for Green Tea?

A recently published study found that rinsing with green tea reduced plaque-forming bacteria in the mouth just as well as a prescription mouthwash. Get the details, including the form and dose of green tea used, in the Green Tea Supplements, Drinks and Brewable Teas Review >>   

4/22/2015

Green Tea Extract and Prostate Cancer

A new study, funded by the National Institutes of Health, showed that fewer men with pre-cancerous lesions developed prostate cancer if given a daily green tea extract supplement, although the results were not statistically significant due, in part, to the small size of the study. However, a somewhat similar study found a significant benefit. Learn more about these studies, and see our test results for green tea supplements, teas, and drinks, in the Green Tea Review >>

9/28/2013

Green Tea to Treat Fibroids

A new study suggests that green tea extract may help shrink uterine fibroids (common in women of childbearing age) and reduce symptoms. For details, as well as test results and comparisons of green tea extracts and brewable teas and drinks, see the updated Green Tea Review >>

3/27/2018

Green Tea and Ovarian Cancer

Drinking green tea was associated with a reduced risk of developing ovarian cancer in a recent analysis. Get the details about this and green tea's relationship to other types of cancer in the What It Does section of the Green Tea Review. (Also see our test results for various types of green tea, including matcha, bagged tea, loose tea, and supplements.)

2/27/2018

Matcha Green Tea for Memory & Cognition?

Can drinking matcha green tea enhance memory or have other cognitive benefits? Find out what a recent study showed in the Memory and Cognition section of the Green Tea Review.

12/16/2017

Tea & Iron Absorption

A surprising number of foods and beverages, including tea, can interfere with the absorption of iron. When you drink your tea can make a big difference, according to a new study. Get the details in the Iron Supplements Review >>

8/27/2017

Does Lithium Prevent Dementia?

A new study found the risk of developing dementia to be significantly lower in areas with higher levels of lithium in the drinking water. This finding is consistent with a study that found low-dose lithium to stabilize patients with Alzheimer's disease. Details about these studies are in the "What It Does" section of the Low-Dose Supplements Review, which includes our Top Picks among low-dose lithium supplements.

7/19/2014

High-Dose Niacin with Statins Not Worth It

Further evidence was published this week showing that the addition of high-dose niacin (vitamin B-3) to cholesterol-lowering treatment with statin drugs provides no worthwhile benefit and appears to increase the risk of adverse side events. For details, see the Review of B Vitamin Supplements and Energy Drinks >> 

10/06/2017

Green Tea & Prostate Cancer

A recent study investigated the effects of green tea extract in men with pre-cancerous changes of the prostate. Find out if it helped in the "What It Does" section of the Green Tea Supplements and Drinks Review >>

11/07/2015

Triglyceride-Lowering with a Probiotic

Studies with probiotics have demonstrated modest lowering of LDL ("bad") cholesterol, but the evidence has been mixed regarding triglycerides. A recent study in which a probiotic was added to a kefir drink showed a 17% reduction in triglycerides along with a modest reduction in LDL — effects not seen with the kefir alone. Details are found in the Probiotics and Kefirs Review >>

3/18/2017

Tea Drinking Associated with Less Cognitive Decline

A new study found tea drinkers to have significantly less cognitive decline than others. Read the details in the "What It Does" section of the Green Tea Supplements Review (which includes our tests of teas) >>

7/06/2016

Lower Risk of Death With Green Tea

A long-term study of men in China found that those who regularly drank green tea — particularly larger amounts — were less likely to die during the study and had lower risks of dying from cardiovascular disease or cancer, compared to non-green tea drinkers. Get the details in the "What It Does" section of the Green Tea Review >>

8/17/2019

Green Tea and Blood Sugar

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.

10/11/2019

Risk from Reusing Plastic Water Bottles

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?

1/14/2020

Tea & Heart Disease

Another study shows that people who drink tea are less likely to suffer from cardiovascular disease. Find out how much and what type of tea was associated with benefits in the Cardiovascular disease section of the Green Tea Review. Also see our Top Picks for green tea.

5/15/2018

Too Much Vitamin B6

Be aware that you can get too much vitamin B6 from supplements and energy drinks. This can result in nerve damage and other adverse effects, as has been recently reported. For details, see the B6 section of the B Vitamin Supplements Review.

8/18/2018

Extra Protein Can Help Older People

Increasing protein intake can help older people maintain and build muscle — but it's not that simple. Get the details, and read about the latest studies, in the Building and maintaining muscle mass section of the Protein Supplements Review. (Also see our Top Picks among protein shakes and drinks).

7/17/2018

Too Much Coconut Water?

Drinking too much coconut water can be dangerous, particularly for certain people. Get the details in the Concerns and Cautions section of the Coconut Waters Review. (Also see our tests and comparisons of popular coconut waters.)

2/29/2020

Breast Cancer & Milk Consumption

Is drinking milk – dairy or soy – associated with breast cancer risk? Find out what a new study found in our answer to the following question: Are there vitamins or supplements that can reduce my risk of breast cancer? Do any increase cancer risk?

12/17/2019

Green Tea and Breast Cancer Risk

Is there a relationship between green tea consumption and breast cancer risk? Learn what a large recent study showed in the Cancer Prevention section of the Green Tea Review. Also see our Top Picks for green tea -- including brewable green tea (from bags and loose tea) and green tea drinks.

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?

3/30/2019

Green Tea for Lowering Blood Pressure

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.

5/31/2019

Licorice Tea Caution

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.

6/08/2019

Avoiding Microplastics in Bottled Water

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?

4/02/2019

Green Tea and Breast Cancer

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.

10/16/2018

A Caution With Green Tea

Although consumption of green tea is generally associated with a reduced risk of cancers, drinking it a certain way may increase the risk of certain cancers. Get the details in the Cancer Prevention section of the Green Tea Review. (Also see our Top Picks among green tea in bags, bottles, supplements, and matcha.)

1/30/2019

Getting the Most from Green Tea

If you drink green tea to get beneficial compounds like EGCG, learn about a recent study that suggests that the type of water you use to brew tea drastically affects the amount of EGCG you get. Get the details in the How to Take section of the Green Tea Review. Also see our Top Picks for green tea.

9/29/2020

Green Tea for Memory?

Can a green tea extract supplement improve memory or cognitive function in healthy, older men and women? Find out what a recent study showed in the What It Does section of our Green Tea Review. Also see our Top Picks for green tea supplements and drinks.

8/10/2021

Coffee and Arterial Stiffness

Does drinking coffee increase arterial stiffness, a predictor of heart disease? Find out what research shows in our updated answer about Coffee and Heart Health.

5/15/2021

Misleading Kefir Claims

Recent testing of several popular kefir beverages in the U.S. found that none contained their claimed amount of live probiotic cells -- although a popular yogurt did. See the results, by brand, in the Kefir section of our Probiotic Supplements Review. Also see our Top Picks among probiotic supplements and drinks.

5/22/2021

Possible Toxin in Straws

Potentially toxic compounds known as PFAS occur in some brands of dental floss and a variety of other products. A new report indicates that PFAS are also in certain drinking straws. Find out more.

3/17/2021

Does Coffee Consumption Lower Cardiovascular Risk, or Is It the Other Way Around?

New study results may undermine the association between moderate coffee consumption and reduced risk of cardiovascular disease. Find out in our updated answer to the question: Is drinking coffee good or bad for heart health?

10/15/2021

How Coffee Helps the Heart

A recent study may help explain how moderate coffee consumption reduces the risk of heart disease. Get the details in our updated answer to the question: Is drinking coffee good or bad for heart health?

10/29/2021

More Toothpaste Tips

Find out if you need fluoride in toothpaste if you already get it from your drinking water or other sources, if people prone to tooth sensitivity should avoid tartar control toothpaste, and whether xylitol in toothpaste helps prevent cavities.

8/03/2021

Coffee and Dementia?

Can drinking coffee increase or decrease the risk of dementia? A cause-and-effect relationship has not been established but some striking associations were recently found based on consumption levels. We've added the details to the Safety section of our article about Coffee and Heart Health.

12/21/2021

Apple Cider Vinegar for Better Mood?

Can drinking apple cider vinegar or taking an apple cider vinegar tablet improve mood? See what a new study found in the What It Does section of our Apple Cider Vinegar Review. See our Top Picks for apple cider vinegar.

12/17/2021

Lemon Juice and Kidney Stones

Drinking lemon juice daily may help prevent kidney stones but there is a downside, according to a recent, two-year study. Get the details in our updated answer about Juices That May Reduce Kidney Stone Risk.

11/11/2021

Sleep, Drink, and COVID Hospitalization Risk

Lack of sleep and frequent consumption of certain beverages may each increase the risk of being hospitalized if you get COVID-19, according to a recent study. Get the details in our updated answer to the question: How are you staying healthy during the coronavirus pandemic?

4/07/2022

Pickle Juice for Muscle Cramps?

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

2/23/2022

Coffee and Heart Health

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

10/11/2022

Removing Radium From Water?

A CL Member asked if water pitcher filters can remove radium from drinking water. Find out in the What to Consider When Using section of our Water Filter Pitchers Review.

8/16/2022

Water for Dry Eye?

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

8/22/2023

Brita Lawsuit

A recently filed lawsuit alleges that Brita products do not live up to claims of removing hazardous contaminants from drinking water. Learn more and ConsumerLab’s take on the suit in our Water Filter Pitchers Review, which includes our Top Picks among products.

8/11/2023

Kombucha for Diabetes?

Does drinking kombucha help lower blood sugar levels in people with type 2 diabetes? Find out what a recent study showed in the Kombucha section of our Probiotic Supplements Review.

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

6/30/2023

Fluoride Supplement?

Should people who drink water that has little fluoride take a fluoride supplement? Find out in the Fluoride section of our CL Answer about toothpaste and other dental products.

5/23/2023

Concern With Kombucha?

A recent study suggests a dental concern with drinking kombucha. Get the details in the Concerns and Cautions section of our Probiotics Supplements Review.

Also see our Top Picks among probiotic supplements.

6/27/2023

Should you worry about fluoridated drinking water?

A recent study showed an increase in dental fluorosis in children in areas with fluoridated water. Should you be concerned? Learn more in the Fluoride section our article about toothpaste and other dental products.

11/08/2022

Potassium Added to Starbucks Coffee?

A competitor of Starbucks claims that Starbucks is adding potassium to some of its coffee. Get the details obtained by ConsumerLab in our article: Is drinking coffee good or bad for heart health?

2/28/2023

Kombucha for Blood Sugar?

Drinking kombucha (a fermented beverage containing probiotics) with a high-carb meal may blunt the rise in blood sugar after the meal, according to a recent study. Get the details in the What It Does section of our Probiotic Supplements Review, which includes our Top Picks among products.

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

1/06/2023

Coffee, Milk, and Kidney Stones

Does drinking coffee, or adding milk to it, increase the risk of kidney stones? Find out in our CL Answer about foods, supplements, and kidney stone risk.

5/05/2023

Do Water Filter Pitchers Really Remove PFAS?

In many parts of the U.S., drinking water exceeds proposed limits for potentially toxic PFAS compounds. How well do water filter pitchers remove PFAS? Find out in the PFAS section of our Water Filter Pitchers Review.

Also see our Top Picks for water filter pitchers.

5/09/2023

Filtering Out PFAS

We’ve added information about an add-on to Brita filters that claims to remove potentially dangerous PFAS from drinking water. See the PFAS section of our Water Filter Pitchers Review.

Also see our Top Picks among water filter pitchers.

4/04/2023

Coffee’s Effects on Heart Rhythm, Sleep

Does drinking caffeinated coffee cause heart palpitations, or reduce sleep? See what a recent study found in our updated article about coffee and heart health.

1/27/2024

Green Tea Interaction With Medicine

Drinking green tea may significantly affect blood levels of a common beta-blocker, as well as statins, blood-thinners, and thyroid medication. Be aware of these interactions. See the Concerns and Cautions section of our Green Tea Review.

1/27/2024

Licorice & Blood Pressure

Eating black licorice, or drinking tea that contains it, can increase blood pressure and cause heart issues. Get the latest details in our article about licorice.

1/30/2024

Ulcerative Colitis

Find out if drinking coconut water or taking psyllium helped people with active ulcerative colitis in recent studies. Also see our Top Picks among coconut waters and psyllium supplements.

2/02/2024

Lower Blood Sugar with Aloe?

Does drinking aloe juice right after a high-fat meal reduce spikes in blood sugar and blood fat levels? Find out what a recent study showed in the What It Does section of our Aloe Vera Supplements Review, which includes our Top Picks for aloe.

2/06/2024

Coffee for Brain Health?

Find out if drinking coffee improves cognitive function and memory, affects the risk of Alzheimer's disease, and more in our article about the brain health benefits of coffee.

2/09/2024

Coffee & Blood Pressure

Does drinking regular coffee increase blood pressure in people taking blood pressure-lowering medication? See what a recent study showed in our article about coffee and heart health.

1/19/2024

Risks with Plant-Based Milks for Young Children

Learn why young children should not exclusively drink plant-based milk instead of dairy milk in the Concerns and Cautions section of our Plant-Based Milk Review, which includes our Top Picks among plant-based milks.

1/23/2024

Chamomile and Bleeding Risk?

Does drinking chamomile tea increase bleeding risk? Find out in the chamomile section of our article about supplements for sleep.

1/12/2024

L-Theanine for Fatigue?

Did drinking a beverage containing L-theanine, with or without CBD, reduce fatigue? See what a recent study showed in the Stress, sleep and cognition section of our L-Theanine Review, which includes our Top Picks for L-theanine.

Also see: Which supplements help to improve energy and decrease fatigue?

9/01/2023

Green Tea Interactions

Drinking green tea can affect the absorption of many drugs, as was most recently shown with raloxifene (Evista), a medication used to treat osteoporosis and reduce breast cancer risk. Learn about these interactions (including those with certain statins, beta-blockers, and blood thinners) in the Concerns and Cautions section of our Green Tea Review. Also see our Top Picks among green tea products.

11/14/2023

Aluminum Exposure from Coffee?

Does drinking coffee made from aluminum capsules or in aluminum pots significantly increase aluminum exposure? Find out what research suggests in the Other Concerns with Coffee section of our article about coffee.

11/23/2023

Headache, Alcohol, and Quercetin

Quercetin may put one at risk for headache and facial flushing when drinking alcohol, according to recent research. Quercetin is also known to interact with many prescription drugs. See the details in the Concerns and Cautions section of our Quercetin and Rutin Supplements Review.

3/22/2024

Lower Cholesterol with Green Tea

Drinking green tea can lower cholesterol or triglyceride levels, as was recently shown. See the details in the What It Does section of our Green Tea Review, which includes our Top Picks for green tea.

3/08/2024

Sweeteners and the Heart?

Is there a higher risk of atrial fibrillation in people who drink artificially sweetened beverages? Find out what a recent study found in our article about sugar substitutes.

3/15/2024

Coffee and Brain Bleed?

Does drinking coffee increase the risk of brain bleeds? Find out what research suggests in our article about coffee and heart health.

9/10/2014

Lead in Dark Chocolate

Our recent tests of cocoa-based products found problems with many popular brands of cocoa powders, which were high in cadmium and/or lead. No problem was found, however, with a widely-sold dark chocolate bar, which also had a good amount of potentially beneficial flavanols. A new report by academic researchers in Brazil shows that some dark chocolate bars do contain lead in excess of what the FDA permits (although brands were not identified.) More about this, as well as our test results for 15 cocoa products, is found in updated Review of Cocoa/Cacao Powders, Extracts, Nibs, Supplements, and Chocolate >>