Why is blood sugar high after a meal? It is caused by these five reasons

High blood sugar has become the most common disease in today's society, especially among middle-aged and elderly people. Some patients show persistent high blood sugar, while some patients have high blood sugar after meals. This is mainly due to five major causes: improper medication, insufficient basal medication dosage, increased secretion of hormones antagonizing insulin in the early morning, damage to pancreatic cells, lack of monitoring of postprandial blood sugar, and patient diet.

First, patients use medication improperly

Some patients with type 2 diabetes have obvious obesity and insulin resistance, but they have been using long-acting insulin secretagogues. Since these drugs take a long time to take effect, they cannot effectively improve the early phase insulin secretion of diabetes and reduce insulin resistance, so it is often difficult to control postprandial blood sugar. Some patients mainly use medium- and long-acting insulin when using insulin, rather than combining it with short-acting or ultra-short-acting insulin that has a fast onset of action, so their blood sugar levels after meals are prone to being high.

Second, the basic dosage is insufficient and the secretion of hormones that antagonize insulin increases in the morning.

A considerable number of diabetic patients take glucose-lowering drugs only during the day, including those receiving insulin therapy. Because the efficacy of hypoglycemic drugs cannot last until the second half of the night, and because at dawn, in order to prepare for the day's work, the body's secretion of hormones that antagonize the hypoglycemic effect of insulin increases. These hormones can increase blood sugar, causing a significant increase in blood sugar in the early morning and after breakfast.

Third, pancreatic islet cell damage

Since diabetic patients have impaired insulin secretion in the early stages and delayed insulin peak, their blood sugar levels often rise significantly after meals. If the patient also has severe insulin resistance, the postprandial hyperglycemia will persist for a long time.

Fourth, lack of monitoring of post-meal blood sugar

When monitoring their blood sugar, most patients tend to only pay attention to fasting blood sugar and rarely monitor postprandial blood sugar. Due to the lack of monitoring of postprandial blood sugar, there are rarely a series of measures taken to address postprandial high blood sugar, such as controlling diet, exercising, or using drugs to lower postprandial blood sugar. As a result, once the doctor asks to check the postprandial blood sugar, people often find that their blood sugar is alarmingly high and their glycosylated hemoglobin is also significantly elevated.

Fifth, the patient's diet

The increase in postprandial blood sugar is most obvious after breakfast and lunch. In addition to the fact that the secretion of anti-insulin hormones in the morning is greater and the liver produces a large amount of glucose, it may also be related to the quality, quantity and cooking methods of the patient's breakfast. Some patients like to drink porridge for breakfast. Since porridge is heated for a long time, starch is easily dissolved in water. After eating, it can come into contact with digestive juice extensively and is easily absorbed. In addition, porridge is in a semi-fluid state, and the stomach emptying time after eating is relatively short. Therefore, eating porridge for breakfast is more likely to increase postprandial blood sugar than eating staple food.

The above is the answer to the question "What causes high blood sugar after meals?" If you are troubled by this problem, you can look at the cause of your own situation, and then find a suitable solution to help yourself solve the problem based on the cause. Only in this way can you achieve a more ideal effect in solving the problem of high blood sugar after meals.