Nutrition
Dawn Phenomenon Glucose
Dawn phenomenon glucose is a hormone-driven morning blood-sugar rise before breakfast. Sleep timing, dinner habits, and clinical care shape how high it climbs.
Dawn phenomenon glucose is the early-morning rise in blood sugar driven by overnight growth hormone and cortisol pulses—not only late-night snacking. Fasting CGM users often see a bump before breakfast.
Consistent sleep, earlier dinners, and morning movement can blunt peaks; medical care guides medication timing when diabetes is present.
Common questions
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Can dawn phenomenon happen without diabetes?
Yes—healthy people can see modest morning rises on CGM. Persistent high fasting glucose warrants clinician review, not only diet tweaks.
Related terms
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