Dietary supplements not only didn't extend life, but can be harmful at high doses, new study finds.
Researchers from the Friedman School of Nutrition Science and Policy at Tufts have found that adequate intake of certain nutrients from foods -- but not supplements -- is linked to a reduction in all-cause mortality.Get breaking news alerts and special reports. The news and stories that matter, delivered weekday mornings.don’t extend life and might actually shorten it if taken at high levels, researchers reported Monday in the Annals of Internal Medicine.
The participants included in Zhang’s study all had filled out a 24-hour food questionnaire twice. In addition, during a household interview, they answered whether they had used any dietary supplements in the previous 30 days. Those who said they had used supplements were asked for details, including how often they took the products.
During the median follow-up of six years, 3,613 of the study participants died. That number included 945 cardiovascular deaths and 805 cancer deaths. Dr. Rekha Kumar, an endocrinologist, wasn’t surprised by the finding that people consuming healthy diets lived longer and that supplements didn’t seem to extend life.
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