A unit of the National Academy of Sciences, which Congress chartered in 1863 to advise the federal government on issues of science and engineering. The FNB oversees the development and updating of Dietary Reference Intakes (DRIs)¾which include Recommended Dietary Allowances (RDAs) and Adequate Intakes (AIs)¾as well as other standards for human nutrition. Mailing address: Food and Nutrition Board, Institute of Medicine, 2101 Constitution Ave., N.W., Washington, DC 20418. Executive offices: Voice: 202-334-2177. Fax: 202-334-1694. Public information: Voice: 202-334-2138. Email: email@example.com. Internet: www.iom.edu.