What essential role do vitamins play in the body?

Vitamins play a crucial role in supporting various biochemical processes that are essential for life. They are organic compounds that are required in small amounts for numerous functions in the body, including metabolism, immune function, and cellular repair. Each vitamin has specific roles; for instance, vitamin C is vital for collagen synthesis and antioxidant protection, while the B vitamins are fundamental in energy metabolism and the functioning of the nervous system.

Unlike macronutrients such as carbohydrates, proteins, and fats, which provide energy, vitamins do not supply calories but rather facilitate the biochemical reactions that convert food into energy and help maintain overall health. This underscores their importance beyond mere sustenance, highlighting their involvement in maintaining the body's physiological functions.