Try to limit salty, sugary and sugary foods. For more information on the development of the Dietary Guidelines, who is involved and the story, see DietaryGuidelines. Everyone who works in federal, public health, health, education and business agencies rely on the Dietary Guidelines when providing diet and health information to the general public. The Departments of Agriculture (USDA) and Health and Human Services (HHS) work together to update and publish the Dietary Guidelines for Americans every 5 years.