I believe it is something that every sugar lover is used to, although we all know that we need to compare fasting blood glucose values and 2-hour postprandial blood glucose values, so that we can understand our instantaneous blood glucose values and the body’s function of breaking down sugar. However, is it enough to focus on these two parameters to be worry-free? No, there is another important body data that many sugar lovers overlook, blood glucose fluctuation. This is the trend of blood sugar levels between peaks and valleys. This index is even more influential in diabetes complications than persistent high blood sugar over time. Blood glucose fluctuations are also divided into short-term and long-term, that is, the trend of high and low blood glucose levels over the course of a day and the trend of long-term phase time. The main danger of this is the impact on the endothelium of blood vessels, which contributes to the cardiovascular complications of diabetes. Since the blood glucose value of human body is not constant, many daily things in life will affect the change of blood glucose value, so in order to analyze your blood glucose fluctuation, you can add several time points for blood glucose measurement, from one measurement a day to several measurements a day, and record the value of multiple measurements to visually see the change of your blood glucose value in a day, and insist on recording it to see the long-term blood glucose fluctuation. Therefore, the daily blood glucose test may not be able to understand your physical condition in detail, but the data shown by the blood glucose fluctuation allows you to understand your condition more intuitively, which can play a great role in timely control of the disease or prevention of diabetes. Suffering from diabetes does cause a lot of unnecessary trouble in life, and the traditional treatment methods can only stabilize the disease, and can not avoid various problems in life. While obesity type 2 diabetes can be treated by gastric bypass surgery, generally after the surgery patients can maintain a normal blood sugar level for a long time, so that the condition can be effectively reversed, and there is no need to take glucose-lowering drugs for life.