Table 3.
Micronutrients of interest in dietary surveys and corresponding WHO recommended nutrient intake (RNI)
| RNI format | 1–3 years | 4–6 years | 7–9 years | 10–18 years | |
|---|---|---|---|---|---|
| Total folate (µg) | Minimum | 100 µg | 200 µg | 300 µg | 400 µg |
| Vitamin B12 (µg) | Minimum | 0·9 µg | 1·2 µg | 1·8 µg | 2·4 µg |
| Vitamin D (µg) | Target | 5 µg | 5 µg | 5 µg | 5 µg |
| Ca (mg) | Minimum | 500 mg | 600 mg | 700 mg | 1300 mg |
| K (mg)* | Minimum/target | 800 mg | 1100 mg | 2000 mg | 3100–3500 mg |
| Na (mg)* | Maximum | 500 mg | 700 mg | 1200 mg | 1600 mg |
| Fe (mg)* | Minimum | 6·9 mg | 6·1 mg | 8·7 mg | 11·3–14·8 mg |
| Iodine (µg) | Minimum | 90 mg | 90 mg | 120 mg | 150 mg |
| Zn (mg) | Minimum | 4·1 mg | 4·8 mg | 5·6 mg | 7·2–8·6 mg |
*
RNI are derived from the WHO except Fe, K and Na, where UK RNI have been used instead, as WHO Fe RNI values are based on different bioavailabilities and K and Na values are downweighted based on energy requirements for children relative to adults.