What is vitamin D used for?

The human body uses vitamin D to develop and maintain strong bones; and, it prevents brittle bones, falls and fractures. Vitamin D aides in the function of the immune system, secretion of insulin, regulation of blood pressure, differentiation of cells, and maintenance of calcium and phosphorus levels.

Physicians use vitamin D to treat certain bone disorders and nutrient deficiencies, as well as high blood pressure, high cholesterol, diabetes, asthma and psoriasis, a skin condition. Evidence shows that vitamin D supplements reduce the risk of osteoporosis for older adults; and, vitamin D and calcium combined prevent low-calcium levels and bone loss, which are characteristic of osteoporosis.