A gram of fat, abundant in foods like nuts, cheese, and avocados, contains a high caloric value of approximately 9 calories. In comparison, carbohydrates and proteins offer a lesser caloric density, providing a meager 4 calories per gram. So, fat yields more than twice the energy when contrasted with these macronutrients. This elevated energy content can be advantageous, providing ample fuel for the body's daily operations.