Here you'll see a timeline showing how we've understood nutrition throughout history. Covers Prehistoric times to the present. Simply click on a year to read about nutritional advice, customs, and beliefs during that year. (Maintained by SIRC: Social Issues Research Center.)

"Dietary Guidelines for Americans is published jointly every 5 years by the Department of Health and Human Services (HHS) and the Department of Agriculture (USDA). The Guidelines provide authoritative advice for people two years and older about how good dietary habits can promote health and reduce risk for major chronic diseases." (Maintained by U.S. Department of Health and Human Services.)