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Clinical Updates (14)

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10/09/2021

Moderna vs. Pfizer: When to Choose One Over the Other

Two very different medical reports this week seem to indicate important, although subtle, differences between these two mRNA vaccines. Namely, that the Moderna vaccine has somewhat greater efficacy but, not unexpectedly, at somewhat greater risk of myocarditis in younger people. This seems to suggest that, if given a choice, Moderna may be better for older people while Pfizer may be safer for younger people.
4/13/2019

Maca for Improved Functioning?

Do maca supplements improve functioning and lessen fatigue? A recent study found different results for men and women. Get the details in the What It Does section of the Maca Supplements Review. Also see our top choices among maca products.
3/02/2016

Probiotic Helps with IBS

A probiotic was found to improve many symptoms of irritable bowel syndrome in a recent study. Studies with other probiotics have also shown benefits, but be aware that the choice of probiotic seems to depend on the type of IBS. Get the details, as well as our quality ratings, in the Probiotic Supplements Review >>
7/12/2017

Fat Fish vs. Lean Fish

If you are trying to control your blood sugar, it turns out that your choice of fish can make a difference. Learn more in the "What It Does" section of the Fish Oil Supplements Review. The review includes our Top Picks among omega-3 supplements.
1/16/2018

Lutein and Zeaxanthin Improve Memory

Lutein and zeaxanthin may help to slow the progression of age-related macular degeneration in people with low blood levels of lutein. A new study suggests these compounds may have another benefit -- improving memory in some people. Get the details in the "What It Does" section of the Vision Supplements Review >> (Also see our top choices among products.)
9/22/2018

Cinnamon Side Effects

If you take a cinnamon supplement (or regularly use large amounts of cinnamon), be aware of the potential for side effects. See the Concerns and Cautions section of the Cinnamon Supplements Review. (Also see what our tests of cinnamon supplements and spices found and our top choices among products).
12/04/2017

What NAC (N-Acetylcysteine)

NAC is both a supplement and a drug used to treat conditions ranging from flu and chronic bronchitis to compulsive behavior. A recent study evaluated its use in preventing kidney injury during angiography (imaging of blood vessels). Get the results and learn more in the "What It Does" section of the NAC (N-Acetylcysteine) Supplements Review >> Also see our top choices among NAC supplements.
1/23/2019

Garlic and Blood Pressure

If you have high blood pressure, a particular garlic supplement may provide some benefit, according to a recent study. For details, see the "What It Does" section of the Garlic Supplements Review. Also see our top choices for garlic supplements.
10/05/2019

L-Theanine for Sleep and Cognition?

Several studies have evaluated whether a single dose of L-theanine (found in green tea) can reduce stress and anxiety. A new study has evaluated the effect of L-theanine when taken daily for several weeks. See the results in the What It Does section of the L-Theanine Supplements Review. Also see our top choices for L-Theanine.
12/15/2018

Enzymes for Indigestion

Will taking digestive enzymes reduce indigestion? Although not all studies have shown a benefit, a recent study suggested improvements with no adverse effects. For details, see the Digestive Discomfort section of the Digestive Enzyme Supplements Review. (Also see our top choices for enzyme supplements).
2/05/2019

Theanine for Anxiety?

Theanine is promoted as an anxiety-reducing supplement, but does it really work? See results of a recent study in the What It Does section of the L-theanine Supplements Review. Also see our top choices for L-theanine supplements.
5/02/2020

Can Garlic Slow Atherosclerosis?

Can taking a garlic supplement slow the build-up of plaque in arteries? See what a new study found in the What It Does section of the Garlic Supplements Review. Also see our top choices for garlic supplements.
12/10/2019

Huperzine A for Memory?

Huperzine A is often touted as a memory-enhancing supplement. Find out if it helped in a recent study of people with traumatic brain injuries in the What It Does section of the Huperzine A Supplements Review. Also see our top choice for Huperzine A.