Blood glucose rises gradually after a meal, then with the help of insulin, blood glucose enters the cells, so the sugar concentration in the blood gradually falls back, normally 2 hours after a meal, back to below 7.8mmol/L, so there is an upward and then downward curve of blood glucose after a meal, which is normal, and blood glucose up to 9mmol/L one hour after a meal is also possible.

The most important thing I would like to remind all of you who are concerned about blood glucose is that whether you are diagnosing or controlling diabetes, the goal is to get fasting or 2-hour postprandial blood glucose up to the standard, which varies from person to person, respectively, and to have random blood glucose at no other point in time that is more than 11.1 mmol/L. If you can manage to monitor your blood glucose, do so for the two hours postprandial blood glucose and the fasting blood glucose, and then monitor the pre-bedtime blood glucose when you need to do so.

All of the monitoring is to see if what we are eating, how much we are exercising, and how well we are taking our medications are matched, and it is also used to detect abnormal blood sugar fluctuations in cases of illness, anxiety, and suspected hypoglycemia.

I am Xu Xu speaking about sugar. I wish you good health!

Please ask @PositiveDiabetes to help add anything that's not comprehensive.

Normal on an empty stomach, abnormal after a meal, this should be related to what you eat, I don't know if there is any medication or exercise, if there is any, all of that should be taken into account as well. Just talking about diet here.

Different foods have different digestion times and different glycemic indexes. If you consume more carbohydrates with higher glycemic index such as rice and white flour, they enter the blood circulation faster, and you may be prone to higher one hour postprandial blood glucose values at this time.

Meal 2 may be higher than Meal 1 if you eat fewer carbohydrates and more foods such as meat, or if your digestion is not very good.

You may also experience delayed digestion and higher meal two than meal one if you eat the vegetables first, then the meat, and then the main meal.

Generally, the blood glucose value of meal one and meal two reflects the reserve function of the pancreatic islets. If the pancreatic islets function normally, the blood glucose value of meal two will be lower than that of meal one, and meal three tends to be normal.

Specifically, you can observe your situation and adjust your diet or increase your exercise.