What is the primary function of carbohydrates?

Carbohydrates serve as the body's primary source of energy, particularly for the brain and during high-intensity exercise. When carbohydrates are consumed, they are broken down into glucose, which can then be used to produce adenosine triphosphate (ATP) through metabolic processes. ATP is the energy currency of the cell, necessary for almost all cellular functions and activities.

While regulating metabolism, building tissue, and providing insulation are functions associated with other macronutrients—specifically proteins and fats—carbohydrates are chiefly known for their role in energy provision. This makes them crucial during physical activity and for overall bodily function, particularly in situations where fast energy is required. By understanding that carbohydrates are essential for ATP production, one can recognize their vital role in both everyday activities and athletic performance.