Type 2 diabetes is a chronic disease that, simply put, lasts a lifetime. However, if type 2 diabetes is controlled early and to within the standard level, it can greatly delay the emergence or progress of various complications of type 2 diabetes. In this way, the quality of life and life expectancy of patients with type 2 diabetes can be similar to that of normal people. In addition, some obese people can have short-term improvements in type 2 diabetes with weight loss surgery, which is now called metabolic surgery. However, it cannot be said that type 2 diabetes is cured because the improvement period may be 5, 10 or 15 years. It is very rare that a person’s blood sugar remains completely normal for the rest of his or her life after weight loss surgery or metabolic surgery.