https://academic.oup.com/jcem/advance-article/doi/10.1210/clinem/dgae290/7685305?login=true

Children aged 1-18 years to prevent rickets and to potentially lower the risk for respiratory tract infections

Pregnant people to lower the risk for maternal and fetal or neonatal complicatio

Adults older than 75 years to lower the risk for mortality

Adults with prediabetes to lower the risk for type 2 diabetes