FIGURE 2.

The relation of the caloric contributions of the RDA for protein and carbohydrate and the recommended minimal intake of fat to total caloric requirement as estimated for a 30-y-old man with low activity levels (36.5 kcal ⋅ kg⁻¹ ⋅ d⁻¹) (reference 2, Tables 5–22). Although energy requirements may vary according to sex, age, activity level, and other factors, at most, the RDA of the macronutrients can account for ∼40% of energy requirement. CHO, carbohydrate.