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09/27/11 07:29 PM

"I had gestational with both pregnancies and have been told I'm pre-D for about 15 years. My bedtime BS is <102, but AM 108-110.....why?"
Asked By: zbjb86  
Category: Prediabetes

Background Info Hide
I have never taken any meds to control my BS - just diet and exercise. I used to run 98-105 AM, now consistently 110. Can't figure out whats changed, don't understand why I am 98-102 at bedtime and higher in the AM.

Expert Answers (1)

04/11/12 08:16 PM

If you are not taking any diabetes meds there are two reasons why your morning sugar is higher than your bedtime sugar. The first is referred to as the "Dawn Effect." In most persons, blood sugar starts to rise from 3 to 6 AM. This may be nature's way of providing you with more fuel to meet the challenges of the day. The second reason, which is a little more controversy is called the "Somogyi Effect." This theory states that a low blood sugar during the night may result in a higher rebound blood sugar as the body responds to the low with various hormones. Sometimes this can be prevented by having a bedtime snack. Morning rises may also be prevented by modest weight loss (5-7% of total weight) and/or adding 30 minutes of moderate exercise the previous afternoon or evening. Good question. Good luck.
Answered By: Donna Yuscavage
Accreditations: RN, BSN, CDE
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