daily recommended intakes of nutrients intended to provide for individual variations among most normal, healthy people in the United States under usual environmental stresses.
RDA's are recommendations made by the Food and Nutrition Board of the National Academy of Sciences for the amount of nutrients healthy individuals should consume daily, taking into account their sex and age.
Levels of essential nutrients that, on the basis of scientific knowledge, are judged by the Food and Nutrition Board (FNB of the Institute of Medicine at the National Academy of Sciences), to be adequate to meet the known nutrient needs of practically all healthy persons. They are designed to provide a safety factor appropriate for each nutrient and exceed the actual requirements of most persons whose individual nutrient needs vary.
Recommendations for daily intake of specific nutrients for groups of healthy individuals. There is a specific recommendation for pregnant and lactating women. These recommendations are set by the Food and Nutrition Board of the National Research Council of the National Academy of Science.
a United States reference for daily nutrient consumption