The USDA's suggested food serving sizes are available at ChooseMyPlate.gov. The website provides information about the five food groups, including charts detailing daily nutrition recommendations based on gender, age and physical activity.
Information about serving sizes is available under the MyPlate section of the ChooseMyPlate website. The MyPlate section contains categories for each of the five food groups. Clicking on one of the food groups opens a new page with relevant information about that food group. The new page provides details about the types of food in that food group, daily serving recommendations and what constitutes one serving. Each food group page also provides information about nutrient and health benefits, as well as tips on how to eat or prepare those foods.
The USDA recommends that a daily diet should consist of 40 percent vegetables, 30 percent grains, 20 percent protein and 10 percent fruits. Other recommendations include filling half a plate with fruits and vegetables and eating different types of protein. The USDA advocates for portion control of all foods, especially foods high in sodium and sugar. Suggested food serving sizes and dietary recommendations are used by the USDA to promote a better understanding of nutrition and healthy diets.