Vitamin D is a fat-soluble vitamin that plays a critical role in maintaining healthy bones, teeth, and muscles. It helps the body absorb calcium and phosphorus from food, which are essential for bone growth and maintenance. Vitamin D also plays a significant role in regulating the immune system, neuromuscular function, and reducing inflammation. Moreover, studies suggest that vitamin D may have protective effects against certain cancers, heart disease, and diabetes. Despite its importance, vitamin D deficiency remains prevalent worldwide, particularly in areas with limited sun exposure. Therefore, it is essential to understand the sources of vitamin D and how to maintain adequate levels to prevent various deficiency symptoms and maintain good health.