Insulin resistance often progresses silently, so you cannot confirm it by “feeling” alone. Clues may include increased belly fat, post-meal fatigue or sleepiness, strong sugar cravings, energy swings during the day, and difficulty losing weight. However, confirmation should be data-driven. Common lab markers include fasting glucose, fasting insulin, and the HOMA-IR calculation derived from these values. HbA1c (3-month average glucose) and a lipid profile (especially triglycerides and HDL) help complete the metabolic risk picture. At home, the most practical steps are tracking waist circumference and symptoms, but diagnosis requires measurements. If symptoms are frequent or there is a family history of diabetes, an internal medicine or endocrinology evaluation is the most reliable path to a personalized plan.