Vitamin D Recommendations

The current recommendations for consumption of vitamin D in the US are given in Table 1. The recommendations are defined as adequate intakes (AIs) rather than as recommended dietary allowances (RDAs) because insufficient data have been accumulated to determine estimated average requirements (EARs) across the life cycle. The AIs listed in Table 1 are totally independent of skin production of vitamin D. Because of the uncertainty of knowing the amount of endogenous vitamin D, it

Table 1 Recommended adequate intakes (Als) of vitamin D in the US

Life stage group Age, years AI, mcg/day

Table 1 Recommended adequate intakes (Als) of vitamin D in the US

Life stage group Age, years AI, mcg/day

Infants and Children

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