Dietary Guidelines for Americans 2015-2020 What do you eat? Or better yet, what should you eat? If you are confused, the USDA and the HHS make it a lot easier. Every five years since 1980, they update and release the Dietary Guidelines for Americans. The guidelines are based on the latest science to provide information on a nutritious diet. It all started in 1862, when the USDA was established. They...