A RISE IN BLOOD GLUCOSE LEVELS CAN BE CAUSED BY:
An increase in the amount and/or type of carbohydrates you eat
Most foods, except fats and meats, contain carbohydrates. When you eat foods that have a high concentration of carbohydrates per serving, or you have an increased amount of your usual foods, your blood glucose will rise.
Glucose released by the liver overnight
Your body requires glucose 24 hours a day, seven days a week. Your liver stores glucose and releases it during the night. With type 2 diabetes, your liver can sometimes release too much glucose. This explains why your glucose may be higher in the morning than before you went to bed – even when you’ve had nothing to eat.
An illness can pose special problems for people who have diabetes. Illness is a stress on your body that can cause your blood glucose levels to go up. Even a minor illness such as a cold, flu or infection can raise your blood glucose level.
Emotional stress caused by excitement, anger, worry and fear can cause an increase in blood glucose.
Not enough medication
When you have less medication than normal (a missed dose for example) or the medication you are taking is not effective enough, blood glucose levels will rise.