Much More Than Bone Health Most people know Vitamin D3 (Cholecalciferol) is essential for strong bones, because it helps the body absorb calcium and phosphorus from the diet.  Vitamin D3 benefits are far more extensive and in fact decrease the risk of all cause mortality (death regardless of the cause).  Although vitamin D is made by the body when skin is exposed to sunlight, the majority of people have below optimal levels of D3.  In fact a study showed below...