Recommended Dietary Reference Intakes* for Some Macronutrients, Food and Nutrition Board, Institute of Medicine of the National Academies
Category | Age or Time Frame (year) | Protein (g/kg) | Energy(kcal/kg) | Calcium (mg/kg) | Phosphorus (mg/kg) | Magnesium (mg/kg) |
|---|---|---|---|---|---|---|
Infants | 0.0–0.5 | 2.2 | 108.3 | 66.7 | 50.0 | 6.7 |
0.5–1.0 | 1.6 | 94.4 | 66.7 | 55.6 | 6.7 | |
Children | 1–3 | 1.2 | 100.0 | 61.5 | 61.5 | 6.2 |
4–6 | 1.2 | 90.0 | 40.0 | 40.0 | 6.0 | |
7–10 | 1.0 | 71.4 | 28.6 | 28.6 | 6.1 | |
Males | 11–14 | 1.0 | 55.6 | 26.7 | 26.7 | 6.0 |
15–18 | 0.9 | 45.5 | 18.2 | 18.2 | 6.1 | |
19–24 | 0.8 | 40.3 | 16.7 | 16.7 | 4.9 | |
25–50 | 0.8 | 36.7 | 10.1 | 10.1 | 4.4 | |
51+ | 0.8 | 29.9 | 10.4 | 10.4 | 4.5 | |
Females | 11–14 | 1.0 | 47.8 | 26.1 | 26.1 | 6.1 |
15–18 | 0.8 | 40.0 | 21.8 | 21.8 | 5.5 | |
19–24 | 0.8 | 37.9 | 20.7 | 20.7 | 4.8 | |
25–50 | 0.8 | 34.9 | 12.7 | 12.7 | 4.4 | |
51+ | 0.8 | 29.2 | 12.3 | 12.3 | 4.3 | |
Pregnant | — | 0.9 | 4.6 | 18.5 | 18.5 | 4.9 |
Breastfeeding | 1st year | 1.0 | 7.9 | 19.0 | 19.0 | 5.4 |
*These amounts, expressed as average daily intakes over time, are intended to provide for individual variations among most healthy people living in the US under usual environmental stresses. | ||||||