What Causes High Blood Sugar in the Morning?
This article discusses a few possible causes of high blood sugar when waking up.
The “dawn phenomenon” describes high morning glucose due to a natural rise in hormone levels. During the early morning hours, your body releases cortisol and growth hormones to prepare for the day.
Your liver produces extra glucose in response to these hormones. For people without diabetes, the body secretes more insulin to handle the excess glucose. But for people with diabetes, the body
Increased blood sugar due to the dawn phenomenon is usually treated with insulin or medications like metformin (Fortamet). If you are already on insulin, the type of insulin you’re taking or your dosage may need to be changed.
Named after the scientist who first described the condition, the Somogyi effect refers to the body’s production of excessive glucose in response to a period of low glucose, or hypoglycemia, during sleep. This
Though this phenomenon was commonly suggested as a cause of morning hyperglycemia,
Obstructive sleep apnea (OSA), a condition in which your airways become intermittently obstructed during sleep,
Although the exact underlying mechanisms aren’t clear,
More research is necessary to determine how OSA and diabetes influence each other and if treatments for one condition may improve the other. However, maintaining a moderate weight and managing OSA with treatments like a continuous positive airway pressure (CPAP) machine
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According to the American Diabetes Association (ADA), if you take insulin and have been experiencing high blood sugar in the morning, your insulin may be wearing off too soon. If this is the case, your doctor may adjust your dosage or change the time you take the insulin to prevent high glucose levels.
Understanding what’s causing your morning hyperglycemia is essential before your doctor can recommend the appropriate treatment.
To pinpoint the cause, your doctor may ask you to check and record your blood glucose levels before bed, during your sleeping period, and first thing when you wake up. A continuous glucose monitor can also help record your blood glucose levels without interrupting sleep.
Once you’ve identified the cause, ask your doctor about a treatment plan to manage it.
High blood sugar upon waking may be caused by a few factors, such as waning insulin levels or the effects of OSA. Your doctor may ask you to record your blood sugar levels before, during, and after your sleeping period to pinpoint the cause.
Talk with your doctor if you’re experiencing high blood sugar in the morning.