Blood sugar rises after meals, drops during activity, and keeping it in a healthy range is key to preventing diabetes and other health problems.
Glucose levels tend to rise overnight, especially in the morning hours. This is referred to as the Dawn Phenomenon. In both types of diabetes, this happens when not enough hormone is produced. Hormone levels also rise in the morning hours which can disrupt the correct amounts. Adjusting the time of injections, other medications, and meals can help to correct high morning levels. Some physicians recommend eating a healthy late night snack to help control the overnight increase.

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