The main reason why diabetes may be relieved by weight loss may be because the patient is suffering from the pathogenesis of diabetes at the time, involving insulin resistance. Because many obese patients will have significant insulin resistance due to excess body fat, insulin resistance is the inability of insulin in the patient’s body to produce normal glucose-lowering effects, thus leading to abnormal blood glucose utilization and disorders of glucose metabolism, so that blood glucose will have higher than normal levels. After the patient has lost weight, it is possible that the insulin resistance will be significantly improved due to the reduction of body fat, and insulin will resume its glucose-lowering effect, so the patient’s blood sugar may drop to normal level, but even this does not mean that the diabetes is completely cured, and regular monitoring and review are needed.