Nutrition
CGM Dawn Rise Versus Rebound Low
CGM dawn rise versus rebound low separates hormone morning climbs from rebound after overnight lows—check overnight dips before blaming late snacks or changing medication.
CGM dawn rise versus rebound low distinguishes hormone morning climbs from Somogyi-style rebound after untreated overnight hypoglycemia—a critical difference for athletes wearing sensors recreationally. Dawn rise shows gradual elevation from sleep with no preceding sharp dip; rebound follows a low then spike.
Check three a. m.
scans or night alerts when patterns confuse. Alcohol and late intense training muddy both.
Bring week-long traces to your clinician before changing insulin or medication.
Common questions
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How do you tell dawn phenomenon from rebound high?
Dawn phenomenon climbs gradually without a preceding overnight low. Rebound highs follow a dip then spike—often around 2 to 4 a.m. Review several nights with your clinician before changing treatment.
Related terms
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