What Causes Vitamin D Deficiency?
Vitamin D is a group of fat-soluble prohormones with active metabolites. Vitamins D2 and D3 are the two major forms. Sun exposure, food and supplements are the sources of vitamin D. Calcitriol is an active form of Vitamin D3. It is required for bone growth, bone formation and bone resorption. Inadequate amounts of Vitamin D can…