- For U.S. residents
| Group | Age (y) | Selenium (μg/day) |
| Infants | 0.5-0.5 | 10 |
| 0.5-1.0 | 15 | |
| Children | 1-3 | 20 |
| 4-6 | 20 | |
| 7-10 | 30 | |
| Males | 11-14 | 40 |
| 15-18 | 50 | |
| 19-24 | 70 | |
| 25-50 | 70 | |
| 51+ | 70 | |
| Females | 11-14 | 45 |
| 15-18 | 50 | |
| 19-24 | 55 | |
| 25-50 | 55 | |
| 51+ | 55 | |
| Pregnant | 65 | |
| Lactating | 1st 6 months | 75 |
| 2nd 6 months | 75 |