What function do vitamins serve in the body?

Vitamins play a crucial role in the body as organic compounds that assist enzymes, acting as catalysts in various biochemical processes. They are essential for metabolic processes, helping the body utilize macronutrients like carbohydrates, proteins, and fats effectively. Each vitamin often has a specific function, such as aiding in the conversion of food into energy or supporting immune function and blood clotting. Because they help regulate biochemical reactions without being consumed in the process, they are vital for maintaining overall health and facilitating numerous bodily functions.

Other choices focus on energy provision, storage, or transport, which are roles typically associated with macronutrients, minerals, or other compounds rather than vitamins themselves. Thus, the correct understanding of vitamin function centers on their catalytic support of enzymatic activity in various physiological processes.