Carbohydrates are classified into three main types: sugars, starches, and fibers. Sugars, or simple carbohydrates, consist of one or two sugar molecules and provide quick energy. Starches are complex carbohydrates composed of long chains of sugar molecules, serving as energy reserves for plants and foods we consume. Dietary fibers, also complex carbohydrates, are indigestible and play a crucial role in digestion and maintaining healthy bowel function. Each type of carbohydrate serves essential purposes in nutrition, energy supply, and overall health.