What is the primary function of carbohydrates in the diet?

The primary function of carbohydrates in the diet is to provide energy. Carbohydrates are one of the main macronutrients, and they are the body's preferred source of fuel. Once ingested, carbohydrates are broken down into glucose, which is then used by cells for immediate energy or stored as glycogen in the liver and muscles for later use. This energy is essential for various bodily functions, including physical activity, brain function, and maintaining metabolic processes.

While carbohydrates also play a role in aiding digestion because certain types, like dietary fiber, promote digestive health, their main role remains energy provision. Other functions, such as building and repairing tissues or regulating body temperature, are primarily associated with proteins and fats, respectively, rather than carbohydrates.