Abstract: Vitamin D, often referred to as the “sunshine vitamin”, plays an indispensable role in maintaining human health. This paper vividly introduces the formation, discovery, biological functions, and everyday applications of vitamin D from a chemical perspective. Through a deeper understanding of vitamin D, we can better recognize and learn how to judiciously utilize this essential nutrient to safeguard our health.

Key words: Vitamin D, Molecular structure, Osteoporosis, Rachitis