Insulin therapy is an important tool for controlling hyperglycemia. type 1 diabetic patients are dependent on insulin for life support and must use insulin to control hyperglycemia and reduce the risk of diabetic complications. type 2 diabetic patients do not need insulin for life support but still need insulin for blood glucose control to eliminate diabetic symptoms and reduce the risk of diabetic complications due to the failure of oral hypoglycemic drugs or the existence of contraindications to the use of oral drugs. hyperglycemic symptoms and reduce the risk of diabetic complications. At some point, especially when the disease is long, insulin therapy may be the most important, or even necessary, measure to control blood glucose. Insulin is not harmful if used correctly. However, the disadvantage of insulin is that it must be given by subcutaneous injection, thus causing inconvenience and pain to the patient in its use. Even so, the superiority of insulin therapy is still unmatched by oral hypoglycemic drugs. Insulin can be considered as an alternative treatment for diabetes in the following cases: (1) Patients with insulin-dependent diabetes who must receive exogenous insulin in order to control their blood glucose levels. (2) Women with diabetes during pregnancy and delivery. (3) Diabetes mellitus complicated by ketoacidosis and hyperosmolar non-ketotic coma. (4) Non-insulin-dependent diabetes mellitus can be treated with insulin after a period of treatment with sufficient doses of oral hypoglycemic drugs, but the blood glucose is always high and the efficacy is not obvious. (5) Diabetic patients with progressive development of chronic complications, such as retinopathy, neuropathy when rapidly deteriorating, after the emergence of diabetic nephropathy. (6) When diabetic patients with severe infection, chronic wasting disease, and need for major surgical procedures. In the application of insulin, the end blood sugar needs to be measured before three meals and at bedtime every day, and the drug dosage should be adjusted according to the changes in blood sugar. If the patient has poor renal function, regular observation of blood glucose is required.(7) After the initial intensive treatment, newly diagnosed type 2 diabetic patients clear the toxic effects of high glucose, improve the function of pancreatic β-cells, and partially restore the acute insulin response, thus normal blood glucose can be restored in a longer period of time. Insulin has long been misunderstood, and some people believe that insulin is addictive like a drug. In developed countries in the West, more than 50% of type 2 diabetes patients are treated with insulin, while in China only 10%-20%, not that Chinese diabetics do not need insulin, but because Chinese people have too deep a misunderstanding of insulin, and Chinese diabetes education is still far from enough. In addition, it has a lot to do with the quality of culture of the whole population. For a long time, diabetic patients often have the concern that once they use insulin, type 2 diabetes will also become insulin-dependent diabetes, and they will never be able to leave insulin again. Some even compare insulin with opium. In fact, these are big mistakes. The use of insulin will never turn type 2 diabetes into insulin-dependent type 1 diabetes; dependence or non-dependence on insulin is only related to your condition and has nothing to do with the early or late use of insulin. The answer to the question of whether you can become addicted to insulin after injection is absolutely no! Why can’t some diabetic patients stop once they receive insulin therapy? (1) 1 Diabetic patients do not produce insulin in their bodies and are dependent on exogenous insulin to survive, so it is not an addiction. (2) A very small number of adults with late-onset type 1 diabetes, these patients are often easily misdiagnosed as type 2 diabetes in the early stages, when many oral hypoglycemic drugs are ineffective after changing to insulin, so this part of the patient is also not addicted. 3) Type 2 diabetes patients due to irregularities in the use of drugs to cause islet depletion, and the secretion of insulin is insufficient, so the need for long-term use of insulin. (4) It is more common to see that after using insulin, diet and exercise therapy are relaxed, resulting in poor blood glucose control, so insulin has to be used for a long time to control blood glucose. (6) Type 2 diabetes mellitus has islet secretion function, but it is necessary to take insulin therapy due to acute complications, stressful conditions (such as infection, surgery, etc.), or pregnancy. Therefore, after using insulin for a period of time and the condition is stabilized, the insulin dosage can be gradually reduced until it is discontinued and replaced by oral hypoglycemic therapy. In short, insulin is an endocrine hormone, pharmacologically it is not addictive and will never become addicted! As a diabetic patient, you must get out of the misconception that insulin can be addictive and refuse to use it, and actively cooperate with your doctor to prevent delays in treatment!