Reasons for high blood glucose measured daily after breakfast include dietary factors, abnormal glucose tolerance and diabetes.
1. Dietary factors: If a large amount of sugar-rich foods, such as cakes and cookies, are eaten at breakfast, it will lead to a rapid rise in blood glucose after breakfast.
2. Abnormal glucose tolerance: Fasting blood glucose can be normal, but postprandial blood glucose is elevated, generally at 7.8~11.1mmol/L.
3. Diabetes mellitus: patients with diabetes mellitus may also have elevated postprandial blood glucose, and the two-hour postprandial blood glucose or random blood glucose may be more than 11.1mmol/L.
If you have high blood glucose after breakfast, you can go to the hospital and ask the doctor to make a judgment.