by Dr. Anna Melissa Lo
Managing diabetes has become more advanced and convenient with the advent of Continuous Glucose Monitoring (CGM) devices.
These devices provide real-time insights into your glucose levels, helping you take control of your health like never before.
What is a CGM device?
A CGM device is a small, wearable sensor that tracks your glucose levels throughout the day and night.
Unlike traditional finger-stick tests that provide a single glucose reading, CGMs continuously monitor glucose levels in real time, offering a more comprehensive view of your glucose patterns and trends.
Why choose a CGM?
Real-time data: CGM devices give instant access to your glucose levels, allowing you to make informed decisions about your diet, exercise, and insulin use.
Improved A1C: With continuous data, CGMs can help you identify patterns and make adjustments that lead to better A1C control over time.
Alerts and alarms: Many CGMs are equipped with customizable alerts that notify you when your glucose levels are too high or too low, helping you avoid dangerous situations.
Less finger-sticking: While calibration may still require occasional finger sticks, CGMs significantly reduce the need for multiple daily tests, making diabetes management less painful and more convenient.
How does it work?
The CGM sensor is typically placed on your abdomen or arm, where it measures glucose levels in the interstitial fluid just beneath your skin.
The sensor sends data to a display device, such as a smartphone or dedicated reader, where you can view your glucose levels in real time.
Most CGMs also allow you to share this data with your healthcare provider, making it easier to manage your condition together.
Popular CGM devices
Dexcom G7: Known for its accuracy and user-friendly interface, Dexcom G7 offers real-time glucose monitoring with customizable alerts for up to 10 days (about 1 and a half weeks).
Freestyle Libre 3: This device features a small sensor and a reader that provides up to 14 days (about 2 weeks) of continuous glucose readings, making it a popular choice for those seeking simplicity and reliability.
Tips for getting the most out of your CGM
Calibrate as needed: Some CGMs require occasional calibration with a blood glucose meter. Follow the manufacturer’s guidelines to ensure accuracy.
Analyze trends: Review your data regularly to identify patterns, such as how certain foods or activities affect your glucose levels. This can help you make proactive adjustments.
Stay informed: Technology and features are always evolving. Keep up with the latest updates and tips from your CGM manufacturer to ensure you’re getting the best possible results.
CGM devices are revolutionizing diabetes management by offering continuous, real-time glucose monitoring.
Whether you’re new to CGM or a seasoned user, these devices provide invaluable insights that can help you achieve better control over your diabetes and live a healthier, more informed life.
ANNA MELISSA LO, MD is board certified through the American Board of Internal Medicine, both in Internal Medicine and Endocrinology, Diabetes, and Metabolism. She is currently practicing as a full-time endocrinologist at the Primary Specialty Clinic of Hawaii across different islands including Oahu, Lihue, and Hilo.
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