These recommendations are issued by the Dietary Guidelines Advisory Committee of the United States Department of Agriculture and the Department of Health and Human Services. The Estimated Safe and Adequate Dietary Intakes of Selected Vitamins and Minerals recommendations are placed in a separate table because there is less information on these nutrients. Notice that the values are given as ranges rather than a set figure. Since the toxic levels for many trace elements may be only several times usual intakes, the upper levels for the trace elements given in this table should not be habitually exceeded. These figure do not include allowances for large losses due to sweat or growth.
Usual intakes are generally much higher.
The Food Guide Pyramid was developed as a graphical representation of the Daily Food Guide to help consumers make appropriate food choices for a healthful diet. This is a list of the major on-line resources of public and private organizations. You may have to explore a little to find the information you need. You may also refer to the listing of Daily Values , which are the standards used in nutrition labeling. The RDAs are designed for the maintenance of good nutrition of practically all healthy people in the United States.