Dawn phenomenon occurs when blood sugar increases in the morning and although not exclusively used in the case of diabetes, it commonly occurs amongst diabetics.
Although often confused, Dawn Phenomenon is different from Chronic Somogyi Rebound, because it is not down to nocturnal hypoglycemia.
How is dawn phenomenon caused?
Dawn effect occurs when hormones (including cortisol, glucagon, epinephrine) are released by the body. This can cause the liver to then release glucose.
The dawn effect therefore describes abnormally high early morning increases in blood glucose, usually between 2 am and 8 am amongst people with diabetes.
How does the dawn phenomenon occur?
Researchers think that dawn phenomenon is down to overnight release of the above hormones that then lead to increased insulin resistance.
Further causes of dawn phenomenon may include insufficient levels of insulin, eating high-carbohydrate snacks before bedtime and incorrect dosage of medication.
How is dawn phenomenon treated?
Typically dawn phenomenon is treated by avoiding intake of carbohydrates at bedtime, adjusting how much insulin or medication is administered, switching to other medications or using an insulin pump.
I have high morning blood sugar, do I have dawn phenomenon?
High morning blood sugar can be down to a variety of things, including insufficient insulin, incorrect medication dosage, carbohydrate snacks before bed and more.
Testing blood glucose once during the course of the night (between 2 am – 3 am) will help your doctor to find out whether you have dawn phenomenon.
How do I correct dawn phenomenon?
Your doctor or healthcare professional will be able to help you to correct dawn phenomenon, leading to more stable blood glucose levels in the early morning: