What Causes Vitamin D Deficiency? Vitamin D is a vitamin that functions as a hormone. Low levels of it can cause vitamin d deficiency symptoms. It plays an important role in maintaining proper bone structure because it pulls calcium from…

Vitamin D is a prohormone/vitamin that facilitates hundreds of vital processes in your body. There are great food-sources of vitamin D, but we are often misled as to which foods contain the most usable Vitamin D. Vitamin D is bountiful…