Today more and more people are suffering from diabetes, which is a health problem in China and around the world. Not only does diabetes have a great impact on a person’s health, but there are also complications of diabetes that are the ultimate cause of death. Let’s see what complications there are and what the hazards are: 1. Cardiovascular and cerebrovascular hazards Cardiovascular and cerebrovascular complications are fatal complications of type 2 diabetes. It is mainly manifested by atherosclerosis of the aorta, coronary arteries, cerebral arteries, and microvascular diabetic lesions with extensive small vessel endothelial hyperplasia and capillary basement membrane thickening. Uncoordinated vasoconstriction and dilation, platelet adhesion, and lipid deposition in the vascular wall form hyperglycemia, hyperlipidemia, hyperviscosity, and hypertension, resulting in an increasing index of morbidity and mortality of diabetic cardiovascular and cerebrovascular disease. 2, the danger of diabetic foot The lower limb vascular is one of the hazards of type 2 diabetes, the prevalence is many times higher than that of non-diabetic people, and the amputation caused by diabetic lower limb vasculopathy is many times more than that of non-diabetic patients, which is the main cause of limb disability in diabetic patients. 3, kidney hazards due to high blood sugar, high blood pressure and high blood lipid, glomerular microcirculation filtration pressure abnormally high, promote the occurrence and development of diabetic nephropathy. Early manifestations of proteinuria, swelling, late renal failure occurs, is the main cause of death in type 2 diabetes. 4, lactic acidosis hazards Patients mostly have a history of heart, liver, kidney disease, or shock, there is infection, hypoxia, alcohol consumption, a large number of hypoglycemic history, the symptoms are not specific, high mortality. 5, the danger of diabetic eye disease Type 2 diabetes patients with poorly controlled blood sugar situation are more likely to be harassed by a variety of complications of diabetes, the danger is that a variety of complications can cause patients to become blind. 6, acute complications Type 2 diabetes hazards also include acute complications, urinary disease combined with infection: the incidence is high, the two are mutually causal, must be treated. Common infections include whistle infections and tuberculosis, urinary tract infections and skin infections. The danger also lies in diabetic hyperosmolar syndrome: it occurs mostly in middle-aged and elderly people, half of them have no history of diabetes. Clinical manifestations include severe dehydration, and sometimes it can be misdiagnosed as cerebrovascular accident due to clinical manifestations such as hemiplegia and coma, with a mortality rate of up to 50%. Nowadays, the treatment of diabetes is not only treated by long-term medication in internal medicine, but also by surgical procedures. Wu Liangping said, “Weight loss surgery not only reduces body weight, but also reduces insulin resistance caused by fat accumulation, reduces glucose metabolic load, and effectively improves glucose metabolism.” For example, gastric bypass surgery, known as the “gold standard procedure” for diabetes, is a surgical procedure that reduces the volume of the stomach, shuts down most of the stomach’s functions, and changes the structure of the intestine, thereby further reducing digestive capacity and controlling absorption. This is because the reconstruction of the gastrointestinal tract alters the secretion of hormones in the intestine-islet axis, thereby improving glucose metabolism.