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Recalls & Warnings (42)

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Clinical Updates (5)

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2/27/2014

Vitamin E, Selenium Can Increase Cancer Risk

In some men, taking high doses of vitamin E or selenium may double the risk of developing high-grade prostate cancer, according to a recent analysis. For details, including the dose, see the updates to the Vitamin E Supplements Review >> and the Selenium Supplements Review >>   
10/14/2015

Calcium Supplements Increase Kidney Stone Growth

Calcium supplementation is known to increase the risk of kidney stones in postmenopausal women. A new study shows that taking calcium nearly doubles the monthly growth of such stones in women prone to getting them. The study also assessed the effects of vitamin D supplementation. Details are found in the Calcium Supplements Review >>
5/24/2017

Stroke Risk with Calcium

A new study shows that high-dose calcium supplements may double the risk of stroke in men and women. The risk of heart attack is also increased, as shown in other studies. However, there are ways to take calcium without this risk and still get bone health benefits. For details, see the "Concerns and Cautions" section of the Calcium Supplements Review >>
9/21/2019

Probiotic for the Urinary Tract?

Does taking a popular double-strain probiotic reduce the level of pathogenic microbes in the urinary tracts of women? See what a recent study found in the section about Vaginal bacterial infections of the Probiotic Supplements Review. Also see our Top Picks among probiotics.
10/04/2011

Saw Palmetto May Not Work

It's used by many men hoping to reduce urinary symptoms caused by benign growth of the prostate, or BPH, but a new, well-designed study suggests that it doesn't work. Some other recent research suggest the same. Even when doubling and tripling the standard dose, the high-quality saw palmetto extract used in the new study failed to provide benefit.

What should you do? You may want to consider a different supplement -- beta-sitosterol, a phytosterol. The evidence remains fairly good for beta-sitosterol. To find out more about saw palmetto, beta-sitosterol, and the supplements we have tested, see the Prostate Supplements ReviewMore >>