It is possible to recover from impaired glucose tolerance, which can be prevented or delayed from progressing to diabetes by controlling blood glucose within the normal range through dietary control, proper exercise, and medication, such as metformin, under the guidance of a doctor. Metformin mainly protects the already damaged pancreatic islet beta cells and reduces further damage by increasing the uptake and utilization of glucose by peripheral peripheral tissues such as muscle and fat. Metformin is mainly used for type 2 diabetes mellitus in which simple dietary control and physical exercise are ineffective, especially with obesity; it can increase the glucose-lowering effect of insulin and reduce the dosage of insulin when used in combination with insulin; it can synergize with sulfonylureas glucose-lowering drugs to adjust blood sugar. When diagnosed with impaired glucose tolerance you can control your diet, such as eating more fresh vegetables. Exercise daily to adjust blood glucose. If necessary, take medication to control blood sugar under the guidance of a doctor. When suffering from impaired glucose tolerance, it is recommended to be treated under the guidance of a doctor.