- For U.S. residents
| Life Stage Group | AI*(μg/day) |
| Infants | |
| 0-6 months | 5 |
| 7-12 months | 6 |
| Children | |
| 1-3 y | 8 |
| 4-8 y | 12 |
| Males | |
| 9-13 y | 20 |
| 14-18 y | 25 |
| 19-30 y | 30 |
| 31-50 y | 30 |
| 51-70 y | 30 |
| >70 y | 30 |
| Females | |
| 9-13 y | 20 |
| 14-18 y | 25 |
| 19-30 y | 30 |
| 31-50 y | 30 |
| 51-70 y | 30 |
| >70 y | 30 |
| Pregnancy | |
| £18 y | 30 |
| 19-30 y | 30 |
| 31-50 y | 30 |
| Lactating | |
| £18 y | 35 |
| 19-30 y | 35 |
| 31-50 y | 35 |
*Abbreviations
AI = Adequate intake