Medical experts have endorsed several continuous glucose monitors for tracking blood sugar levels without finger pricks. Devices like the Dexcom G6 and Abbott Freestyle Libre 2 offer real-time readings via smartphone apps. Over-the-counter options such as Stelo and Lingo provide accessible monitoring for general health insights.
Continuous glucose monitors have transformed diabetes management by providing painless, wearable alternatives to traditional finger-stick tests. These devices attach to the upper arm and connect to apps on smartphones or Apple Watches, delivering readings every few minutes to inform decisions on diet, exercise, and medication.
The Dexcom G6 stands out for its integration with phones and watches, offering real-time tracking shareable with up to 10 people and customizable alerts for high or low levels. It reads glucose every five minutes and can link to insulin pumps for automated adjustments, earning approval for use in pregnancy. An updated version, the Dexcom G7, features a smaller sensor and enhanced alerts, as noted in a June 2024 editor's update.
For over-the-counter access, Stelo by Dexcom, FDA-cleared in 2024, requires no prescription and tracks levels 24/7 without safety alarms, making it suitable for non-insulin users curious about lifestyle impacts. Each 15-day sensor costs $99 for two, dropping to $89 monthly with subscription, and pairs with Oura rings. Testers found it useful for observing effects like post-dinner walks on glucose.
The Abbott Freestyle Libre 2, recommended by endocrinologists, allows optional alarms and phone connectivity, with readings via quick scans. Its successor, the Freestyle Libre 3, sends data every minute and stores up to 14 days of history. Dr. Nate Favini highlighted its value in revealing unexpected food triggers for sugar spikes.
Long-term options include Eversense 365, with a 12-month implantable sensor inserted by professionals, and the Guardian Connect System, which predicts highs or lows and requires 12-hour calibrations. Lingo by Abbott, iPhone-only, gamifies tracking with challenges and costs $49 per 14-day sensor.
Experts like Dr. Josh Emdur emphasize CGMs' role in glycemic response insights, while Dr. Rebecca Fenichel notes their utility for frequent monitoring and hypoglycemia prevention. Insurance often covers prescriptions, but over-the-counter models like Stelo and Lingo start at $49. Users should consult doctors for suitability, considering factors like scan frequency and placement on the upper arm.