Carbohydrates Carbohydrates Carbohydrates are dietary nutrients which include sugars, starches, and fibers and are the body's main source of energy. All sugars and starches are carbohydrates. However, most are transformed by the body into a substance called glucose. Glucose is a form of sugar that is carried into the blood and transported to the cells for energy.
Sugars come in many forms.
Of course, sugar is also found in soft drinks and sweets. Sugar also occurs naturally in fruits, vegetables, and dairy products. Complex carbohydrates are found in grains such as breads, rice, pasta, and vegetables such as potatoes and beans. Although both simple and complex carbohydrates contain the exact same number of calories as protein, which is four calories per gram, foods high in complex carbohydrates usually contain nutritional extras. These nutritional extras are vitamins, minerals, and proteins.