What are the Recommended Dietary Allowances (RDA) for Vitamin D?
The RDA for vitamin D varies by age, sex, and life stage. For example, the RDA for adults aged 19-70 is 600 IU/day, while adults over 70 require 800 IU/day. Pregnant and lactating women should also aim for 600 IU/day. These recommendations assume minimal sun exposure and can be achieved through dietary sources and supplementation.
