While all sugars are carbohydrates, not all carbohydrates are sugar. There are two other nutrients that are also carbohydrates: starch and fiber. Starch, found in grains, potatoes, rice, beans, pasta, corn, sweet peas, and root vegetables, is a more complex carb than sugar and is metabolized in your body more slowly, thus preventing the abrupt rise and fall in blood sugar often triggered by sugar consumption. Fiber, found in many fruits and vegetables, as well as whole grains, nuts, seeds, and beans, is not digestible, but it helps your body keep the digestive system healthy, maintain a steady blood sugar level, and control cholesterol levels.;