| EFSA (2010) | IOM (2005) | WHO (2003) | |||
| Male | female | Male | female | Male | female |
19 - 50 years | 2.5 | 2.0 | 3.7 | 2.7 | 2.9 | 2.2 |
51 and above | 2.5 | 2.0 | 3.7 | 2.7 | 2.9 | 2.2 |
Pregnancy | 2.3 | 3.0 | 4.8 | |||
Lactation | 2.7 | 3.8 | 5.5 |