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US National Institute of Health recommended amount of vitamin D [96].
| Life Stage | Recommended Amount |
|---|---|
| <12 months | 10 mcg (400 IU) |
| Children 1 to 13 years | 15 mcg (600 IU) |
| Teens 14 to18 years | |
| Adults 19 to 70 years | |
| Adults ≥71 years | 20 mcg (800 IU) |
| Pregnant and breastfeeding women | 15 mcg (600 IU) |
