Carbohydrates are your body's main energy source. During digestion, sugar (simple carbohydrates) and starches (complex carbohydrates) break down into blood sugar (glucose). If you consume too much carbohydrate-rich food at one time, your blood sugar levels may rise too high, which can be problematic. Monitoring your carbohydrate intake is a key to blood sugar control, as outlined in a plan by your doctor or dietitian.
Carbohydrates are found in lots of different foods. But the healthiest carbohydrate choices include whole grains, vegetables, fruits, legumes, beans, and low-fat dairy products. The chart below shows a single serving of carbohydrate-containing foods, which equals 15 grams: