Efficient blood sugar control plays a major role in preventing diabetes, a disease affecting millions around the world. Detecting problems early, though, has always been tough.

After a meal, some people experience high spikes in blood sugar followed by crashing lows. This can cause fatigue, anxiety ...

Continuous glucose monitors are only about the size of a quarter, but the companies that sell them make huge claims about their health benefits: You can “ revolutionize your health,” one company says.

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?

In the studies, people wore a glucose monitoring patch for a period of time while they tracked what they ate on an app. Researchers used the data to design a personalized diet aimed at lowering blood ...

Continuous glucose monitors are only about the size of a quarter, but the companies that sell them make huge claims about their health benefits: You can " revolutionize your health," one company says.