The first stage: obesity first, then insulin level rises, and insulin resistance appears.
There is no obvious change in blood sugar at this stage, and it is likely that it is normal no matter when it is measured. But if we want to judge whether to enter this stage, there is actually one of the most obvious characteristics-weight begins to increase and waist circumference begins to thicken.
So what is insulin resistance? Insulin transports blood sugar to cells, but the road is blocked, and blood sugar cannot be successfully delivered to cells all over the body. This is insulin resistance. Because of this, blood sugar can only be accumulated in the blood, and excess blood sugar will be converted into "glycogen" and stored in tissues and cells of the whole body such as liver, bones and muscles. However, the number of "warehouses" is limited. After eating, the remaining blood sugar will be converted into fat and stored in your skin, viscera and blood, and your weight will increase step by step.
The second stage: insulin resistance is still going on and getting worse.
The obvious feature of the second stage is that insulin begins to "compensate secretion". In other words, the pancreas will secrete more insulin in order to "send away" these blood sugar. At this stage, blood sugar will rise slightly, but it may still be within the normal range.
(Tips: When reading the physical examination paper, we should not only check whether the value is normal, but also compare it with the previous physical examination report vertically and see the changes of various indicators to judge the changes of physical condition. )
At this stage, because of the need for excessive insulin, the pancreas is overloaded for a long time, which accelerates aging. At the same time, because the excess sugar in the blood is constantly converted into fat storage, it will be accompanied by hypertension, hyperlipidemia and fatty liver.
The third stage: identifiable type 2 diabetes.
In the first two stages, even if the situation of insulin resistance becomes more and more serious, it cannot be defined as diabetes because of hypoglycemia. In fact, such a diagnosis method is not desirable. In fact, if you eat polished rice and flour every day, your weight and waist circumference exceed the standard, and you have a family history of diabetes, then you are already a quasi-diabetic. In daily physical examination, we should not only rely on fasting blood glucose as a screening index, but also detect postprandial blood glucose and glucose tolerance test.