An increased frequency of self-monitoring of blood glucose levels (up to 6 to 10 times per day) or use of a continuous glucose monitoring (CGM) system can improve HbA1c levels because patients are better able to adjust insulin for meals, have an improved ability to correct hyperglycemic values, and are potentially able to detect hypoglycemia earlier, which prevents overcorrection (ie, excessive carbohydrate intake as treatment for hypoglycemia, resulting in hyperglycemia).