Continuous glucose monitors are wearable devices that track your blood glucose levels 24 hours a day and provide real-time data on trends. CGMs use a sensor inserted into the skin and a transmitter to provide glucose readings without the user moving — or pricking — a finger.

In the last 20 years, CGMs have become a lifesaving tool for people living with diabetes , which impacts how the body regulates blood sugar. The monitors can continuously and painlessly measure blood glucose and alert to spikes, so diabetics can take action and adjust insulin dosage.

However, CGMs have become increasingly popular among people who don't have diabetes. Celebrities and influencers have touted CGMs for weight loss, energy and even athletic performance.

The devices are evolving into yet another trend

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