Vitamins are essential organic compounds that the body needs in small amounts to function properly. They support many critical processes, including energy production, immune defense, bone health, and cell repair. Since the body cannot produce most vitamins on its own, they must come from food or supplements. Vitamins are generally divided into fat-soluble (A, D, E, K), which are stored in the body’s fat and liver, and water-soluble (B-complex and C), which need regular replenishment because they are not stored long-term. A balanced diet with a variety of fruits, vegetables, whole grains, and proteins is the best way to ensure adequate vitamin intake.