1
If I fasted for more than 8 hours, is my fasting blood sugar accurate?
Answer: False!
Fasting blood sugar requires fasting for more than 8 hours, so many people finish their meals early the night before and wait for the next day to be checked. However, the fasting time is too long, and the blood sugar measurement is not accurate. Studies have shown that if the measurement time is longer than 10 a.m. the next morning, it is considered to be ultra-fasting. If the fasting time is more than 14 hours, for diabetic patients, especially those using long-acting insulin or long-acting oral hypoglycemic drugs, on the one hand, they are prone to hypoglycemia, and on the other hand, the liver sugar production will increase to varying degrees, and blood sugar will also rise. Therefore, the ultra-fasting state does not reflect the daily glycemic status. If you go to the hospital for a fasting blood glucose test, it is best to complete the measurement at 8~9 o'clock in the morning.
2
Measure fasting blood sugar and can't eat anything? Wrong!
Answer: False!
Some diabetic patients have hypertension, coronary heart disease and other diseases, and when they hear that they can't eat or drink anything to measure their fasting blood sugar, they stop all the antihypertensive drugs and lipid-lowering drugs they need every day and wait for the examination. This is the wrong thing to do. Measure fasting blood sugar, if you are thirsty, you can drink a small amount of water, and blood pressure medication should also be taken on time, but food is really not edible.
3
Does getting cold affect blood sugar?
Answer: Yes!
As the weather gets colder, blood sugar will also be affected to some extent, but the change is not noticeable for most people. A small number of diabetic patients find that their blood sugar in winter is higher than in summer, so they are worried that the disease will worsen or the drug will not work well. In fact, with small changes in hormones in the body, blood sugar will also change slightly.
When the weather gets cooler, diabetics will have a much better appetite than when it's hot, so blood sugar will fluctuate. Diabetic patients do not need to worry too much, if the blood sugar changes significantly, they can find a doctor to adjust the treatment in time.
4
Do you start counting your postprandial blood sugar when you're full?
Answer: False!
2-hour postprandial blood glucose is also a key indicator for diabetics. Some diabetics check the time after each meal, set an alarm clock, and remind themselves to measure their blood sugar after 2 hours, which is actually wrong. Don't make a mistake about your postprandial blood sugar when you take the first bite of your meal and measure it 2 hours later.
Knowledge Links:
What is the goal of blood sugar control in people with diabetes?
►In the case of avoiding hypoglycemia, the goal of blood glucose control: it is recommended to control fasting blood glucose within 7.0mmol/L, and 2 hours after meals within 10.0mmol/L; for young diabetic patients with good physical condition, they should be controlled as close to normal as possible (fasting blood glucose < 6.1mmol/L, 2 hours after meals blood glucose <7.8mmol/L); for older diabetic patients with poor blood sugar control, the standard can be appropriately relaxed according to the actual situation.
►The control target for glycosylated hemoglobin (HbA1c) was <7.0%. For young people, it can be stricter, and should be controlled within 6.5%, and for the elderly and patients with reduced living ability, the standard can be appropriately relaxed to control within 8.0%. Good control of blood glucose and glycosylated hemoglobin can significantly reduce the risk of microvascular damage, macrovascular events, and peripheral nerve complications in diabetic patients.
►When the blood sugar of ordinary people < 2.8mmol/L, it is hypoglycemia; for diabetic patients, blood sugar is lower than 3.9mmol/L, it will be judged as hypoglycemia, and foods that can raise blood sugar should be supplemented in time.
5
Is normal fasting blood sugar not diabetes?
Answer: False!
Many people have a physical examination every year, and the results show that the fasting blood sugar is normal, but they accidentally check a random blood sugar or postprandial blood sugar, and they are shocked, it is higher than the normal value, is the detection instrument broken?
In fact, most people experience a postprandial increase in blood sugar in the early stages of diabetes. After eating, the blood sugar will gradually rise, and the ability of insulin to cope with the peak of blood sugar after a meal decreases, so the blood sugar rises first after a meal. However, insulin can still cope with the adjustment of fasting blood glucose, so fasting blood sugar is normal.
To give a simple example: if a person's combat effectiveness is compared to the ability of insulin to lower blood sugar, the combat effectiveness of an ordinary person is 20, and no matter how high the blood sugar is, it can lower blood sugar to normal. After the disease, the patient's combat effectiveness drops to 10, and he can cope with the adjustment of fasting blood sugar, but the postprandial blood sugar cannot be lowered because the enemy army is too strong and the combat effectiveness cannot keep up.
Content Sources:
People's Medical Publishing House published "Shouldn't Only Doctors Know: What Must Be Said About Diabetes"
Editor-in-Chief of the book:
Tian Jianqing, chief physician of the General Hospital of Xinjiang Military Region
Zhang Xinju, chief physician of Xinjiang Corps Hospital
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