The statement that insulin can live up to 12 years is incorrect. Subcutaneous injection of insulin is an effective method to control blood sugar in diabetic patients, and insulin will not affect the life expectancy of diabetic patients as long as they have good long-term blood sugar control and delay or avoid the generation and development of various acute and chronic complications, so the statement that insulin can live up to 12 years is incorrect. The main reasons affecting the life expectancy of diabetic patients include the following: 1, acute complications of diabetes, such as diabetic ketoacidosis, hyperosmolar coma, etc., are acute complications caused by high blood sugar, which can endanger the lives of patients; 2, hypoglycemia, diabetic patients receiving hypoglycemic drugs or insulin therapy, when the diet is irregular or the insulin dose is too large, hypoglycemia can easily occur, and in severe cases lead to hypoglycemic coma, affecting the life of patients; 3, combined with cardiovascular disease, long-term poor blood sugar control of diabetes is easy to combine atherosclerosis, combined with coronary heart disease, angina pectoris, myocardial infarction, cerebral infarction, etc., are easy to affect the life of patients; 4, diabetic nephropathy, long-term poor blood sugar control of diabetes patients are easy to combine diabetic nephropathy, renal insufficiency, and even uremia, will also affect the life of patients Life expectancy; 5, other, diabetic patients combined with serious infections, will also affect the life expectancy of patients.