What is continuous glucose monitoring (CGM)?

Continuous glucose monitoring (CGM) refers to a technology that provides real-time blood glucose readings throughout the day and night, offering individuals with diabetes detailed information about their glucose levels. This device typically consists of a small sensor placed under the skin, which measures glucose levels in interstitial fluid. The data collected is sent to a receiver or smartphone, allowing users to track their glucose levels continuously.

CGM systems help in identifying patterns and trends in glucose fluctuations and can alert users to hypo- or hyperglycemic events, enabling them to take timely actions to prevent severe complications. This continuous flow of data is crucial for effective diabetes management, as it provides insights that traditional fingerstick blood glucose monitoring may not capture, particularly during times of rapid changes in glucose levels.

In contrast to weight monitoring or blood pressure measurement, CGM specifically addresses the needs of blood glucose tracking, reflecting its significance in diabetes care.