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| Life‐stage group (both sexes) | IOM | Committee recommendations for people at risk for vitamin D deficiency | |
| EAR | RDA | Daily requirement | |
| 0 to 12 months | 400 to 1000 IU | ||
| 1 to 18 years | 400 IU | 600 IU | 600 to 1000 IU |
| 19 to 70 years | 400 IU | 600 IU | 1500 to 2000 IU |
| over 70 years | 400 IU | 800 IU | 1500 to 2000 IU |
EAR: estimated average requirement; IOM: USA Institute of Medicine; RDA: recommended dietary allowance
