Vitamin D deficiency is highly prevalent in the US and around the world. Roughly 15.4% of children and adolescents in the US were vitamin D deficient in 2017. While vitamin D deficiency has slightly ...

Vitamin A supports healthy eyes, skin, immune function, and more. Who needs a supplement? Experts discuss the benefits, risks ...

Below, we walk you through everything you need to know about vitamin D and how to get your levels in the proper place.