The U.S. Department of Health and Human Services (HHS) and the U.S. Department of Agriculture (USDA) jointly publish the Dietary Guidelines for Americans (DGA) every five years (since 1980). The guidelines affect food labels; medical research grants; school lunch menus, which feed more than 30 million children each school day; the Nutrition Program for Women, Infants and Children (WIC), which informs the diets of eight million people; and most other public nutrition programs and nutritional decisions. Thus the Guidelines play a major role in determining the foods America produces, buys, and eats, as well as influences the rest of the world.
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