What is the primary function of carbohydrates in the diet?

The primary function of carbohydrates in the diet is to supply energy. Carbohydrates are one of the body's main sources of fuel, particularly for the brain and muscles during physical activity. When carbohydrates are consumed, they are broken down into glucose, which is then utilized by cells for immediate energy or stored in the liver and muscles as glycogen for later use. This role is crucial for maintaining energy levels throughout the day, supporting metabolism, and engaging in various physical activities.

While functions like providing insulation or building muscle tissue are important for overall health and physiological processes, they are not the primary role of carbohydrates. Insulation is mainly provided by fats, and muscle tissue is primarily built from proteins. Hormonal regulation involves a complex interplay of various nutrients and hormones, but does not primarily rely on carbohydrates. These distinctions clarify why supplying energy is the central function attributed to carbohydrates in the diet.