Americans may take too many vitamins, experts say

Americans may be taking too many vitamin supplements in the hope of staying healthy and living longer, a panel of U.S. experts said on Wednesday.

Some people clearly need supplements, the panel said -- for instance, older women benefit from taking calcium and vitamin D to strengthen their bones, and younger women need to take folic acid to reduce birth defects in any children they may have.

But no studies show strongly that people prosper from popping multivitamin and mineral supplements and some suggest that eating healthily and exercising provide more benefit, the panel said....more

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