Blood sugar problems often start years before a diabetes diagnosis. These articles explain prediabetes thresholds such as fasting glucose and HbA1c, the risk factors behind them, and what tools like continuous glucose monitors can and cannot tell you.

Prediabetes affects an estimated one in three adults, and the vast majority don’t know they have it.

Continuous glucose monitors (CGMs) small sensors worn on the arm that track blood sugar in real time were developed for people with diabetes, where they’ve been genuinely transformative