A low-fat diet ( 45-56 energy - % from carbohydrates ) , and a low-carbohydrate diet ( 16-24 energy - % from carbohydrates ) was compared with a Mediterranean-style diet ( black coffee for breakfast and the same total-caloric intake as the other two diets for lunch with red wine , 32-35 energy - % from carbohydrates ) in a randomized cross-over design .