Diabetes has a tendency to increase rapidly in recent years with the increase in obesity. Incidence of diabetes increases among people who have a bad diet and do not have sports habit if they have a genetic predisposition. HGBA1C test, which indicates us the average blood glucose levels for the past 3 months with the fasting blood glucose level, is crucial for the diagnosis of diabetes. Hgba1c values above 6.5 enable the diagnosis of diabetes.