The danger of hypoglycemia: 1. The danger of hypoglycemia is very great, because the supply of energy to the human brain needs glucose, and when hypoglycemia is low, the glucose content is low, it is bound to lead to brain dysfunction, and in serious cases can be coma. 2. When blood sugar is too low, some hormones in the human body will reactively raise blood sugar, the result is like shooting a basketball, the lower the blood sugar pressure is, the lower it is, the basketball The lower the shot the higher it bounces. The more the blood sugar is low, the more it will cause a reflexive increase in blood sugar, which will also make the condition worse. 3. Severe hypoglycemia can induce cardiovascular diseases, such as arrhythmia, myocardial infarction, and stroke after cerebral ischemia.