Medical research shows that 70% to 80% of people with non-insulin-dependent diabetes are obese. The insulin levels in the blood of obese people are not less than normal - some even higher than normal. The insulin receptor on fat cells defects, the insulin may lead to insulin resistance. In order to lower the level of blood sugar, the pancreatic p cells in the body will have to enhance insulin secretion to offset the resistance by fat. When the reserve function of insulin can not reach the growth of fat, it creates the relative lack of insulin. In addition, steatosis and liver injury reduce the effectiveness of insulin intake, as well as excessive production of oxygen free radicals.