Taking insulin does not necessarily mean that you will live up to 12 years. Taking insulin is mainly for diabetic patients with high levels of blood glucose, and if you pay attention to usual maintenance and active treatment, you can usually live for 12 years or even longer with insulin. However, if you don’t pay attention to the usual maintenance and take a negative attitude towards treatment, it is difficult to live for 12 years. Insulin is usually injected subcutaneously, intramuscularly and intravenously, with intravenous injections being used in emergencies. Because a patient’s insulin needs are affected by factors such as diet, number of insulin antibodies and receptors, and affinity, the amount of insulin varies. Insulin plays a very important role in the treatment of high blood glucose, and has a profound effect on regulating the abnormal increase in blood glucose in the body. Patients undergoing insulin treatment must pay attention to their diet and exercise, which can not only effectively improve the situation of high blood sugar in the body, but also effectively increase the survival time.