Sugar-free colas are not recommended for diabetic patients. Although sugar-free colas do not contain sucrose, they do contain some sugar substitutes, and diabetic patients are not recommended to drink sugar-free colas. Sugar-free colas are carbonated beverages, and long-term consumption may affect calcium absorption, leading to osteoporosis; long-term consumption of sugar-free colas may also cause damage to teeth; therefore, diabetic patients are not recommended to drink sugar-free colas. Diabetic patients should maintain a low-salt, low-sugar, low-fat diet, avoid eating fried food, cakes, milk tea, fatty meat and other foods, while appropriate exercise, should also actively cooperate with the doctor’s treatment, and do a good job of daily blood sugar monitoring.