What is the primary function of carbohydrates in the body?

The primary function of carbohydrates in the body is to provide energy. Carbohydrates are one of the three macronutrients, alongside proteins and fats, and they serve as the body's preferred source of energy. When carbohydrates are consumed, they are broken down into glucose, which is a simple sugar that cells use for energy. This process is vital because glucose is used during various metabolic processes to fuel both physical activities and bodily functions.

While carbohydrates can also participate in energy storage in the form of glycogen in the liver and muscles, their primary role is to provide immediate energy. Muscles rely on glucose during exercise, and the brain requires a constant supply of glucose to function effectively. Therefore, although carbohydrates can contribute to energy storage or play a role in other bodily functions, their main and most critical function is to supply energy to the body.