Issued by the United States Department of Agriculture and the Department of Health and Human Services (USDA/DHHS) every five years, the Dietary Guidelines are based on scientific consensus and form the cornerstone of federal nutrition policy. The fifth edition, issued in 2000, contains ten guidelines. Its message, built around three actions "Aim, Build and Choose," strives to motivate Americans with the following advice: 1) Aim for Fitness 2) Build a Healthy Base and 3) Choose sensibly. This revised set of guidelines is the first to recommend daily physical activity and the first to include a guideline specific to food safety.