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In an ideal world, no one would need dietary supplements. Our balanced diets would provide all the vitamins, minerals and other nutrients our bodies need. Alas, the world of American eating is far from ideal. And that, some nutrition experts and supplement advocates argue, is why we need dietary supplements. The latest federal data show that more than half of U.S. adults use dietary supplements, mostly multivitamins.
For some people, taking a dietary supplement may be beneficial. However, if you are in good health, there is limited research to suggest that taking extra vitamins and minerals will significantly boost your health. In fact, some research suggests that certain supplements may be harmful.