Vitamins play a crucial role in energy metabolism by serving as cofactors in enzymatic reactions that convert food into usable energy. For instance, B vitamins, particularly B1 (thiamine), B2 (riboflavin), and B3 (niacin), are essential for breaking down carbohydrates, fats, and proteins. Vitamin C helps in the absorption of iron, also aiding in energy production. Furthermore, adequate vitamin D levels support muscle function and overall energy efficiency. Ensuring a well-balanced diet rich in essential vitamins enhances overall energy levels and metabolic health.