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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.
Dietary supplements can provide nutrients individually or in combination in order to increase the quantity of their consumption. Nutrients includes vitamins, minerals, fiber, fatty acids, or amino acids. Dietary supplements can also contain substances that have not been confirmed as being essential to life but are marketed as having a beneficial biological effect. These are also sold individually and in combination, and also in combination with nutrient ingredients. In the United States, dietary