There are two main causes for the development of diabetes: one is insulin resistance. The second is islet failure. After gastric diversion surgery, insulin resistance is gone, islet function is restored, and diabetes is cured. Advantages of gastric diversion surgery for diabetes: Advantage 1: Cured diabetes, normal blood sugar, patients get rid of lifelong medication and do not need to control diet. Advantage 2: Recovery of diabetic complications that have occurred, such as: numbness of hands and feet, retinopathy, diabetic foot, abnormal urine protein, hypertension and other complications recovery. Advantage 3: After gastric diversion surgery, blood sugar is normalized, complications no longer appear, and the risk of harm from diabetes is reduced or disappears. Advantage 4: The surgery can regulate the body mass index, resulting in weight loss in obese patients and weight gain in thinner patients. Advantage 5: Reduce the economic burden of the patient. Diabetes requires lifelong medication and patients who have had the disease for more than 5 years have a high chance of developing complications, so treatment is expensive. For diabetic patients, a single surgery cures diabetes completely and complications no longer appear, so naturally the economic burden is reduced. Advantage 6: Gastric diversion surgery has low risk and fast recovery after surgery. The surgery is easy and quick, with little trauma, fast recovery and no recurrence. You can eat in 3 days after surgery and be discharged in 10 days after surgery, and your diet and nutrition absorption are not affected.