Vitamin D plays an important role in regulating the levels of essential minerals such as Calcium and Phosphate. In turn, these minerals are used in various parts of the body including the bones, muscles, and teeth. Therefore, a deficiency in Vitamin D will lead to weak muscles and bones as well as dental problems. It is important to understand that Vitamin D can only be absorbed by the body when there is direct sun exposure on the skin. This means that a diet rich in Vitamin D is not enough to prevent the symptoms associated with a deficiency.