Severe diabetes can lead to death because diabetes can lead to severe infections, which in severe cases can lead to sepsis or septicemia, where the patient develops infection, shock, and in severe cases, clinical death. In addition, diabetes can lead to severe ketoacidosis and hyperosmolar hyperglycemic syndrome, two acute complications that can also lead to clinical death in diabetic patients. Therefore, diabetic patients with relatively high blood glucose should be treated with oral hypoglycemic drugs or insulin. If complicated by infection or ketoacidosis or hyperosmolar hyperglycemic syndrome, they should also be promptly hospitalized.