Clinical guidance commonly recommends that most adults take 600 to 800 international units (IU) of vitamin D daily to maintain serum 25-hydroxyvitamin D concentrations around 30 to 50 ng/mL.
January 01, 2025
high
guideline
General daily vitamin D intake recommendations for adults and associated serum concentration targets.
Insufficient exposure to sunlight leads to vitamin D deficiency, which can impair muscle function, reduce bone strength, and weaken immune function.
high
medical
Physiological effects of low sunlight exposure on vitamin D status and related health outcomes.