Table 2.
Age groups | Reference weight, kg (lb) |
Adequate intake, mg/day |
Tolerable upper intake, mg/day |
---|---|---|---|
Infants 0–6 months | 7 (16) | 0.01 | 0.7 |
Infants 7–12 months | 9 (20) | 0.5 | 0.9 |
Children 1–3 years | 13 (29) | 0.7 | 1.3 |
Children 4–8 years | 22(48) | 1.0 | 2.2 |
Children 9–13 years | 40 (88) | 2.0 | 10 |
Boys 14–18 years | 64 (142) | 3.0 | 10 |
Girls 14–18 years | 57 (125) | 3.0 | 10 |
Males ≥19 years | 76 (166) | 4.0 | 10 |
Females ≥19 years | 61 (133) | 3.0 | 10 |
US National Academy of Sciences. Institute of Medicine. Food and Nutrition Board