Perhaps one of the most common questions I receive from those who wish to utilize science-based medicine for their own health is what I think about vitamins. Even among hard-nosed skeptics, this question is often perplexing. On the one hand, vitamins themselves were discovered by medical and biological science, they play a vital role (by definition) in the healthy functioning of our bodies, and deficiencies of vitamins can cause disease. So they seem perfectly legitimate. On the other hand the market is full of exaggerated and even magical claims about the cure-all power of vitamins.
It’s difficult for people to come to a bottom-line conclusion – should they take vitamin supplements or not. Is it woo or not woo?
Well – it’s complicated. But there is large body of research to help inform our decisions about vitamins. Now, the largest study to date has been published (Multivitamin Use and Risk of Cancer and Cardiovascular Disease in the Women’s Health Initiative Cohorts) looking at 161,808 post-menopausal women over 8 years and finding no benefit for heart disease, cancer risk, or overall survival. This study comes on the heels of other recent studies showing no benefit from routine supplementation.
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