How Much Vitamin D Per Day Is Needed For all Genders, Ages, and Pregnancy?
Intake suggestions for vitamin D and other nutrients are given in the Dietary Reference Intakes (DRIs) formed by expert committees of NASEM. A set of reference values utilized for assessing and planning nutrient intakes of healthy people. These values, which vary by sex and age, consist of:
Recommended Dietary Allowance (RDA): Daily level of intake enough to meet the nutrient needs of nearly all (97%–98%) healthy people; sometimes used to arrange nutritionally adequate diets for individuals.
Adequate Intake (AI): Intake at this level is presumed to make sure nutritional adequacy; built when finding is insufficient to make an RDA.
Estimated Average Requirement (EAR): Normal daily level of intake predicts to meet the requirements of 50% of healthy people; mostly utilize to find the nutrient intakes of different groups of people and to organize nutritionally sufficient diets for them; can also be used to find the nutrient intakes of individuals.
Tolerable Upper Intake Level (UL): daily intake is unlikely to give rise to chronic effects on health.
An FNB committee builds RDAs for vitamin D to determine daily intakes enough to maintain normal calcium metabolism and bone health in healthy individuals. RDAs for vitamin D are mention in both micrograms (mcg) and international units (IU); 1 mcg vitamin D is equal to 40 IU (Table no. 2). Even though sunlight is a chief source of vitamin D for few people, the FNB rely the vitamin D RDAs on the expectations that people get minimal sun exposure. For infants, the FNB committee builds a base on the quantity of vitamin D that regulates serum 25(OH)D levels higher than 20 ng/mL (50 nmol/L) and maintains bone development.
| Table: Vitamin D; Recommended Dietary Allowances (RDAs) | ||||
| Age | Male | Female | Pregnancy | Lactation |
| 0-12 months* | 10 mcg (400 IU) |
10 mcg (400 IU) |
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| 1–13 years | 15 mcg (600 IU) |
15 mcg (600 IU) |
||
| 14–18 years | 15 mcg (600 IU) |
15 mcg (600 IU) |
15 mcg (600 IU) |
15 mcg (600 IU) |
| 19–50 years | 15 mcg (600 IU) |
15 mcg (600 IU) |
15 mcg (600 IU) |
15 mcg (600 IU) |
| 51–70 years | 15 mcg (600 IU) |
15 mcg (600 IU) |
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| >70 years | 20 mcg (800 IU) |
20 mcg (800 IU) |
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*Adequate Intake (AI)