What is the function of vitamins in the human body?

Vitamins are essential micronutrients that the body needs in small amounts to maintain normal physiological function. They are involved in a wide range of biological processes, including metabolism, immune function, and the maintenance of healthy skin, hair, and nails.

There are two main types of vitamins: fat-soluble vitamins (vitamins A, D, E, and K) and water-soluble vitamins (vitamins B and C). Fat-soluble vitamins are stored in the body's fatty tissues and liver, while water-soluble vitamins are not stored and need to be consumed regularly through the diet.

Each vitamin plays a specific role in the body, and a deficiency in any one vitamin can lead to a range of health problems. For example, vitamin A is essential for vision, immune function, and the growth and development of cells and tissues, while vitamin D is important for bone health, immune function, and the absorption of calcium and phosphorus.

Overall, vitamins are important for maintaining good health and preventing deficiencies and related health problems. It is generally recommended to obtain vitamins through a balanced and varied diet, although in some cases, supplements may be necessary to ensure adequate intake.