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Clinical Updates (16)

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10/22/2016

Too Much Folate & Nerve Damage

One quarter of American men and women have a gene variation which puts them at higher risk of nerve damage if consuming too much of folate (vitamin B-9) daily, according to a new study. Considering that most older Americans consume more than this amount (largely due to excessive supplement use) this should be a warning to many. For more details, see the "Folate" section of the B Vitamins 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 >>
11/11/2018

Mixed Results for EPA/DHA Fish Oil

Concentrated EPA/DHA fish oil given daily to a cross-section of Americans was not found to lower the risk of cancer or cardiovascular disease except for those with low fish intake and for African-Americans. See the details in the What It Does section of the Fish Oil Supplements Review. Also see which supplements are comparable to the fish oil in the study.
8/28/2021

Can Ginseng Boost Cognition?

Can taking American ginseng improve cognitive function in young people? See what a recent study found in the What It Does section of our Ginseng Supplements Review. Also see our Top Picks among American ginseng supplements.
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 >>
10/13/2016

Heart Concern With Calcium Supplements

A study of American men and women found an increased risk of coronary artery calcification (atherosclerosis) among those who used calcium supplements compared to those who did not, despite the fact that higher total daily calcium intake was associated with a decreased risk of calcification. Other studies point in a similar direction, as described in the "Concerns and Cautions" section of the Calcium Supplements Review >>
8/02/2017

Iron for Restless Legs

Iron supplementation may help to reduce the severity of restless legs syndrome (RLS) symptoms in people who have deficient or low levels of iron, according to guidelines from the American Academy of Neurology. For details, including dosage, see the "What It Does" section of the Iron Supplements Review, which also includes our tests and quality comparisons of products.
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 >>
5/22/2018

Eat Fish for Heart Health

The American Heart Association recently affirmed that eating fish may help to reduce the risk of cardiac death, coronary heart disease, and ischemic stroke. However, the same cannot be said for fish oil supplements. Get the details in the What It Does section of the Fish Oil Supplements Review. Also, stay tuned: ConsumerLab is currently testing popular brands of canned tuna and salmon to assess their purity and levels of omega-3 fatty acids.
1/12/2019

Fiber Benefits

Higher fiber intake was associated with a lower risk of many major diseases in a recent study. However, the average American consumes far below the recommended daily intake of fiber. As oats are a good source of fiber, we’ve added details from the new study in the "Benefits" section of the Oat Cereals Review. (Also see our Top Picks oat cereals.)
8/21/2019

Omega-3s for Lowering Triglycerides

Elevated triglycerides ("hypertriglyceridemia") is increasingly common in the US. High-dose omega-3s from fish oil can help, and the American Heart Association recently updated its advice about this. For details, and to learn how prescription omega-3 compares to supplements, see the Dosage section of the Fish Oil Supplements Review. Also see our Top Picks for fish oils, including highly concentrated fish oils.
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.
6/29/2017

Choline Missing From Prenatals

The American Medical Association recently voted to recommend that all prenatal vitamins include appropriate amounts of choline. Getting adequate choline may reduce the risk of birth defects in children, but most women don't get enough and prenatal vitamins typically provide little to none. Find out how to get adequate choline from supplements and/or foods in the Choline Supplements Review, which includes our Top Picks. Also see the "Prenatal Vitamin" section of the Multivitamin Supplements Review.
10/14/2017

Fatty Liver and Vitamin D

A recent study showed that it is difficult to raise vitamin D levels in some people who have non-alcoholic fatty liver disease -- a condition affecting 30% of Americans. This is concerning, as there may be benefits to raising low levels of vitamin D in such people. Learn more in the "What It Does" section of the Vitamin D Supplements Review >>
11/14/2018

Vitamin D May Prevent Cancer Deaths

A major 5-year study in which a cross-section of Americans were given high-dose vitamin D daily found no overall reductions in cardiovascular disease or cancer or death from these causes. However, when excluding the first two years of the study, the rate of death from cancer was 25% lower with vitamin D than with placebo — a finding consistent with other studies. See the details in the Cancer section of the Vitamin D Supplements Review. (Also see our Top Picks for vitamin D.)
5/19/2020

Potassium Levels Decline

An analysis of blood samples of thousands of Americans suggests a slight decline in potassium intake. Find out what may be causing this in the update to the What It Does section of the Potassium Supplements Review. Also see our Top Picks for potassium supplements.