The Dietary Guidelines for Americans, first published in 1980, are updated and issued every 5 years by the US Department of Agriculture (USDA) and the Department of Health and Human Services (HHS). These provide science-based advice on promoting health through lifestyle habits such as a healthy diet and regular physical activity. The latest recommendations (the seventh edition) were introduced in June 2010and four key goals are stressed.Reduce the incidence and prevalence of overweight and obesity in the US population by reducing overall calorie intake and increasing physical activity.To achieve this goal, all Americans should know how to approximate their personal daily nutrition values. For most, reducing calorie intake can be accomplished simply by choosing smaller portions of high-calo