What is the main function of carbohydrates in our diet?

The primary role of carbohydrates in our diet is to provide energy. Carbohydrates are one of the three macronutrients—alongside proteins and fats—that supply the body with the energy it requires for daily activities, including both physical exertion and metabolic processes. Upon consumption, carbohydrates are broken down into glucose, which is used by the body's cells as a primary energy source.

While regulating blood sugar, supporting digestion, and building muscle are important functions linked to other nutrients and overall diet, they do not encapsulate the fundamental purpose of carbohydrates. For instance, proteins are more directly involved in muscle building and repair, and while some fibers (a type of carbohydrate) aid digestion, carbohydrates mainly act as the body's main fuel source. Therefore, the focus on energy provision accurately reflects the key function of carbohydrates in our nutritional intake.