The main purpose of vitamins is to facilitate various essential biochemical functions in the body. Vitamins are organic compounds that play crucial roles in metabolism, energy production, and the maintenance of overall health. Different vitamins serve specific functions, such as supporting the immune system, promoting healthy skin, aiding in the absorption of other nutrients, and acting as antioxidants. A deficiency in any vitamin can lead to health issues, making it critical to consume a balanced diet rich in fruits, vegetables, whole grains, and other nutrient sources to meet the necessary vitamin requirements.