Have a fast metabolism and thrive on high-protein, high-fat diets with moderate carbohydrates. They are often encouraged to eat high-purine proteins like red meat and organ meats.

The is a nutritional program developed by William Wolcott and Trish Fahey. It is based on the idea that because your metabolism is unique due to heredity, there is no "one-size-fits-all" diet that works for everyone. How the Diet Works

Have a slow metabolism and do best with a diet high in carbohydrates and low in fat and protein.