Insulin resistance is a common, often-missed driver of weight gain, fatigue, sugar cravings, and PCOS — and it develops years before blood sugar shows up as abnormal on a standard test. This section covers the signs, how it’s tested, and how diet, exercise, sleep, and medication can improve it.
Part of our Metabolism & Weight guides. Related topics: Belly Fat & Cortisol, Hormonal Weight Gain.