If your diabetes plan includes ketone testing, follow it and seek help promptly.
Person calling a doctor about repeated unexplained morning blood sugar readings.
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Call your doctor about repeated unexplained morning highs or lows
If your glucose is repeatedly high on waking, it may be related to overnight changes such as the dawn phenomenon, which Mayo Clinic says usually happens between 4 a.m. and 8 a.m. Morning highs can also come from bedtime carbohydrates, missed or mistimed medicine, illness, stress, or not enough insulin. Contact your doctor
are severe, unexplained, or keep coming back.
Frequently Asked Questions
Is high blood sugar every morning always the dawn phenomenon?
No. The dawn phenomenon can raise blood sugar between about 4 a.m. and 8 a.m., but morning highs can also come from food, illness, stress, missed medicine, or another treatment issue. Your care team may ask for overnight checks or CGM data to sort out the pattern.
What symptoms suggest high blood sugar in the morning?
Common high blood sugar symptoms include feeling very thirsty, urinating often, feeling
