Nutrition
Dawn Phenomenon Fasting Glucose Rebound
Dawn phenomenon fasting glucose rebound is a morning glucose rise before eating from hormones—not break-fast food—and can look like fasting rebound on glucose trackers.
Dawn phenomenon fasting glucose rebound is early-morning glucose rise—often four to eight a. m.
—driven by growth hormone and cortisol rhythm while you are still fasted, not by food you just ate. Intermittent fasting users sometimes confuse it with break-fast spikes.
Short sleep, late heavy dinners, and high evening stress can amplify the dawn bump. Compare fasting glucose at wake over weeks, not one reading.
Clinicians interpret patterns alongside A1C and symptoms.
Common questions
-
Why is my glucose high before I eat on intermittent fasting?
Dawn phenomenon releases morning hormones that raise glucose before food. Compare several weeks of wake readings with your clinician—do not confuse this with break-fast meal spikes.
Related terms
Put Dawn Phenomenon Fasting Glucose Rebound into practice
Ohga connects nutrition, fitness, focus, and habits with an AI copilot that learns your patterns. Join the waitlist for early access.