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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.
Your doctor might suggest that, like some older adults, you need extra of a few vitamins, as well as the mineral calcium. It is usually better to get the nutrients you need from food, rather than a pill. Thatâs because nutrient-dense foods contain other things that are good for you like fiber.ietary Supplements. Dietary supplements are substances you might use to add nutrients to your diet or to lower your risk of health problems. They might contain vitamins, minerals, fiber, amino acids, herbs or other plants, or enzymes.