Continuous Glucose Monitoring May Help People With Type 2 Diabetes Improve Blood-Sugar Control

Continuous glucose monitoring (CGM) uses a wearable sensor to measure glucose levels throughout the day. It can help users see how meals, physical activity, sleep and medication affect their blood sugar, rather than relying solely on occasional finger-prick readings.

In the reported trial, the average HbA1c in the monitoring group fell from 8.8% to 7.2% over six months, compared with a reduction from 8.7% to 8.0% in the routine-care group. The study also reported more time spent within its target glucose range among CGM users.

These findings suggest that monitoring may be useful for selected people with type 2 diabetes even if they do not use insulin. However, the trial's commercial sponsorship, the cost of devices and the suitability of monitoring for individual patients should be considered when interpreting the results.

CGM is a management tool, not a cure. People with diabetes should continue prescribed medication, appropriate dietary and activity plans, and regular medical review. Anyone considering a monitor should discuss its potential benefits and limitations with their diabetes-care team.