When hypoglycemia occurs, there is a feeling of nausea and vomiting. These symptoms are mainly caused by the excitement of the vegetative nerves, especially the sympathetic nerves, and there may also be a lot of sweating, panic, weakness, and a very obvious feeling of hunger. The prevention of hypoglycemia mainly relies on a regular diet, as well as having some regular snacks on hand. For example, cookies, bread, candy bars, and so on. At the same time, because hypoglycemia rarely occurs in healthy people, it is often seen in patients with diabetes. In this case, it is recommended to go to the hospital to check the glucose tolerance (OGTT) test and insulin release test to see if there is diabetes. It also focuses on prevention by eating a regular diet, not a full meal, not a hungry meal, this meal is not good, so do not go to eat. After eating regularly, having some small foods on hand can largely prevent hypoglycemia from occurring. Because repeated hypoglycemia is more harmful to the body, so it is important to pay attention to this symptom.