Vitamin D is important for the body as it plays a crucial role in hormone production. It is essential for the creation and maintenance of healthy bones and teeth. Additionally, it can protect against several diseases and conditions, such as type 1 diabetes, and acts as a powerful immunomodulator.

Despite its name, Vitamin D is not a vitamin but a hormone precursor. Vitamins are nutrients that the body cannot produce, which is why it is important to consume them through diet. However, the body can produce Vitamin D.

The main role of Vitamin D is to increase calcium levels in the blood, as it stimulates the proteins involved in the intestinal absorption of calcium and increases the intestinal absorption of phosphorus and magnesium. This is why it is so important for bone density.