In the early stages of the onset of diabetes, there are indeed cases where the blood glucose is brought under excellent control by diet and exercise modalities alone, allowing the target cells to become much more sensitive to insulin. However, some diabetic patients with damage due to pancreatic B cells or insulin receptor cells must be treated with insulin or drugs for diabetes. At the same time, the presence of cellular damage in such patients makes the repair of damaged cells more critical along with strict glycemic control. If the damaged pancreatic B cells or insulin receptor cells can be repaired, the body can restore its own blood glucose regulation function, thus achieving the purpose of fundamentally lowering blood glucose and treating diabetes mellitus. Once the pancreatic islet cells are damaged, it is difficult or even impossible to repair them, and if the pancreatic islets are severely damaged, they cannot secrete insulin at all and can only rely on external injections to carry out normal body circulation. Can diabetes be cured? With the current state of science, there is no cure for diabetes. This is because pancreatic damage is irreversible, which means that once a person has diabetes, it cannot be truly cured, even if the clinical symptoms can be temporarily eliminated. Therefore, people with diabetes should never let their guard down and should always prevent and control it to prevent complications. Diabetes is a lifelong disease and there are no drugs or scientific means to completely cure diabetes, but diabetes can be completely controlled. Diabetes is most closely related to diet, and patients should always control their diet by eating smaller and more frequent meals. In fact, although diabetes surgery (gastric bypass surgery) can adjust the microbiota in the body, thus achieving a lowering of sugar. However, it also requires active dietary cooperation from the patient. Although some patients do not need to take medication after surgery blood sugar is relatively stable, but the damaged pancreas still need to pay more attention to diet, do not “forget the pain after the wound.”