INS and diabetes mellitus: Real-time continuous glucose monitoring (CGM) systems have been shown to be useful tools to lower and/or maintain hemoglobin A1c (HbA1c) and lower time spent in hypoglycemia in people with diabetes, who are insulin treated.1–3 There are sufficient data provided by CGM to enable the user to make diabetes management decisions concerning dosing for meals, preventing and correcting hypoglycemia and hyperglycemia, and exercising.