Final answer:
The Dietary Guidelines for Americans were last updated in 2015 and offer evidence-based recommendations for a balanced diet that promotes health and prevents chronic diseases.
Step-by-step explanation:
The Dietary Guidelines for Americans (DGA) were last updated in 2015. Formulated by the U.S. Department of Agriculture (USDA) and the Department of Health & Human Services (HHS), they provide essential information to help Americans make healthy food choices.
These evidence-based recommendations are aimed at promoting health and reducing the risk of chronic diseases. Key dietary components that should be limited include saturated fats, trans fats, added sugars, and sodium.
Furthermore, these guidelines are part of an evolving understanding of nutrition and health, with previous iterations of guidance including the 'Four Food Groups', 'The Food Guide Pyramid', and 'MyPlate'. The focus on calorie intake balance with physical activity, and embracing a variety of nutrient-rich foods supports a holistic approach to health and wellness.
Factors such as increased portion sizes and a sedentary lifestyle contribute to health issues like obesity, thus understanding and following the latest DGA is critical for maintaining a healthy lifestyle. The guidelines emphasize the consumption of vegetables, fruits, whole grains, lean proteins, and low-fat dairy while advising moderation in regards to less nutritious food components.