The device itself is small, but the hype around it is big. Continuous glucose monitors are only about the size of a quarter, but the companies that sell them make huge claims about their health ...

Continuous glucose monitors (CGMs) have become a hot wellness trend for people without diabetes. Proponents say CMGs can help people make more personalized and proactive decisions about their health.

A quarter-size device that tracks the rise and fall of sugar in your blood is the latest source of hope — and hype — in the growing buzz around wearable health technology. Continuous glucose monitors, ...