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Are Vitamins Useless?


vitaminsHalf of all American adults take some kind of dietary supplement, but a number of new studies have failed to show any link between multivitamin pills and better health or longer life among people with already adequate nutrition, reports the New York Times. Researchers at an eight-year-long study from the Women's Health Initiative showed that multivitamins did not reduce risk for heart disease or any kinds of cancer; a decade-long study on men showed that taking vitamins C and E made no differences in cancer or heart disease rates. Selenium was also not shown to have any effect on prostate cancer rates, as was previously believed.

Some studies have even shown potential harmful effects from vitamins, such as an increased risk of lung cancer among those taking high-dose beta carotene supplements.

But no one denies the health benefits of a balanced diet. Many physicians and researchers believe that the protective effects of vitamins may not translate from whole foods to vitamin pills, for reasons not completely understood. "There may not be a single component of broccoli or green leafy vegetables that is responsible for the health benefits," says one researcher. "Why are we taking a reductionist approach and plucking out one or two chemicals given in isolation?"

Do you take vitamin supplements? Do you think they help?

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