Diabetes Articles
  • Sign Up
FacebookTwitterDiggStumbleuponGoogle BookmarksRedditLinkedinPinterest

High Blood Glucose -3 Reasons For Morning Highs

Reason # 1
During sleep, your blood sugar may decrease as a result of the amount of insulin you took that day, and the hormones, such as glucagon, that raise blood glucose may be secreted, resulting in high blood glucose in the morning. This action is called the Somogyi effect which is named after the doctor who first described it.

Some mornings, your blood glucose may be low if it didn't get low enough to trigger hormone secretion, whereas other mornings it may be high.

If you fail to understand that the main trigger is actually too much insulin and not too little, you may increase your insulin and make the situation worse.

Before increasing insulin at bedtime, do a blood glucose test in the middle of the night. If the level is low, you're in all probability experiencing the Somogyi effect, and you should decrease, NOT increase, the amount of long-acting insulin you give inject at bedtime.

Reason # 2
Another trigger of high blood glucose may be the "dawn phenomenon" which is caused by secretion of too much growth hormone during the night. By morning, it will raise your blood glucose to high levels. If your morning blood sugar levels are consistently high, nighttime long-acting insulin usually takes care of this problem and provides more normal morning blood glucose readings.

Reason # 3
Another possible reason for a morning high, not related to either of the previously mentioned circumstances, is that the insulin used at bedtime did not work long enough to keep the blood glucose from rising overnight. Older forms of insulin such as NPH tend to fall short in this manner, whereas newer long-acting insulin like Glargine and Detemir don't.

Conclusion:
High blood glucose levels in the morning must be avoided if you want to diminish detrimental effects and improve overall glucose control. Consider the 3 reasons given here to determine which of them may be giving you a problem, then take corrective action based on your findings.

Read Full Article

Find out if you qualify for discount Diabetic testing supplies, free offers or other running discounts at this time.


  1. First Name*
    Enter first name
  2. Last Name*
    Enter last name
  3. Phone*
    Enter valid US phone number
  4. E-mail*
    Enter email address



By submitting this form I authorize to be contacted by telephone. Please be assured that we value and protect your privacy. Co-Pays and Deductibles may apply.

About The Diabetes Network

The Diabetes Network was developed with the idea that people living with diabetes needed a central place to go for resources as well as get ideas, suggestions and encouragement. We have put a lot of effort into this website to make it easy and fun to navigate as well as informative so that you can have a voice when it comes to managing your diabetes. Please let us know how we can improve this website to better suit your needs.

More about our Mission

We're on a mission to make the healthcare community more technologically advanced than ever before. This website adapts to fit your tablet, iPad®, iPhone®, Android® or other smartphone. Just one of the ways we are working to make life easier for those living with Diabetes. Learn More...