From Wilmington, Delaware, USA:
My friend, who has type 2 diabetes, has observed that her sugar level comes down to normal levels (90-110 mg/dl [5-6.1 mmol/L] ) at night, about three to four after a low carb dinner, but by morning it rises up to 140-160 mg/dl [7.8-8.9 mmol/L]. Any idea why blood sugar rises during night?
It is not uncommon to observe this elevated morning blood sugar ("fasting hyperglycemia") pattern in type 2 diabetes. The rise in blood sugar during the pre-dawn and early morning hours is a result of increased insulin resistance due to circulating hormones and hence an elevated release of liver glycogen stores.
In other words, the very hormones that help us to awake in the morning stimulate the liver to release a supply of stored glucose, thereby raising blood sugar levels. This is often termed a dawn phenomenon and can occur in type 1 diabetes as well.
Oral agents exist for type 2 diabetes that directly address this fasting hyperglycemia. Glucophage [metformin] does this best by reducing hepatic (liver) glucose production. Often an improvement in fasting blood sugar is noted as a result. Weight loss and regular exercise in combination can help as well by reducing insulin resistance.
|Return to the Top of This Page|
Last Updated: (none)
This Internet site provides information of a general nature and is designed for educational purposes only. If you have any concerns about your own health or the health of your child, you should always consult with a physician or other health care professional.
This site is published by T-1 Today, Inc. (d/b/a Children with Diabetes), a 501c3 not-for-profit organization, which is responsible for its contents. Our mission is to provide education and support to families living with type 1 diabetes.
© Children with Diabetes, Inc. 1995-2018. Comments and Feedback.