Vitamins are organic compounds that are essential for various bodily functions. They help regulate metabolism, support immune function, and promote healthy growth and development. There are 13 essential vitamins, including Vitamin A, Vitamin C, and Vitamin D, each playing unique roles in maintaining health. Most vitamins cannot be produced by the body and must be obtained through diet or supplements. Fruits, vegetables, whole grains, and dairy products are rich sources of vitamins. A balanced diet ensures adequate intake, helping to prevent deficiencies that can lead to health issues.