A continuous glucose monitor is a small device that sticks to your arm. Every few minutes it sends a signal to your phone estimating your blood sugar levels. But can it improve your health?

Explore normal blood sugar levels by age, plus how it links to your overall health and signs of abnormal glucose levels, according to experts.

The blood sugar monitor is simple to use and provides a 5-second reading, plus it connects to the Contour Diabetes app via Bluetooth to keep a log of your readings to share with your doctor. Show more ...

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 ...

DOUCLEFF: And she says when you wear the glucose monitor, you log what you eat. This helps people be more aware of how different foods impact their blood sugar.