It's caused by losing weight. Normal people will have hypoglycemia when they are hungry. They are not morbid and do not need treatment. The typical symptoms of hypoglycemia are: palpitation, shaking hands, sweating, hunger, irritability, mental retardation, memory loss, and dizziness in severe cases. Supplementing carbohydrates (rice, flour, cereal) can quickly relieve it. Long-term hypoglycemia will affect brain function and cause irreversible brain damage in severe cases. As a student, frequent hypoglycemia is especially inappropriate when you use your brain. Sugar is the only source of energy for the brain. Lack of sugar will make the brain cells of mental workers in a state of low energy, overwhelmed and difficult to complete mental work. In the long run, it will cause neurasthenia, affect your studies, and the loss will outweigh the gain. It has been reported abroad that excessive dieting and weight loss lead to slow response, low efficiency of mental work, and even the simplest daily work is difficult to do, and the more successful people lose weight, the more serious their symptoms are. If you must lose weight, you must adopt a scientific method. You can search online for related terms such as "scientific weight loss method" and "blind weight loss is harmful" to learn reference, and you will certainly gain something. I give some simple suggestions for reference only: eat three meals in the morning, noon and evening, but eat less. Eat only seven or eight cents of the normal amount per meal. You may feel hungry at first, but you will get used to it after a while. If you feel less hungry, reduce it by two or three points, but gradually reduce it, so that your stomach will gradually shrink, and finally maintain an acceptable and scientific food intake, so as to achieve a balance between energy intake and energy consumption, so that you will not gain weight. Remember, losing weight requires not only perseverance and determination, but also a scientific and necessary process. We must do it step by step, and we must not act too hastily, otherwise haste makes waste, and we cannot lose weight. It is extremely unscientific for you to "eat normally" in the morning and afternoon and not eat at night. Don't use it in the future. Note that it is absolutely impossible to be exposed to ten cold, and overeating after hunger is the most likely to induce diabetes and cause lifelong regret. If you can stick to my method for more than half a year, it will definitely have an effect. I won't be dizzy or hungry. It's better than your method of "just hungry, but not dizzy" Why not? Also, don't trust most diet pills, teas, etc. In advertisements are deceptive, not only ineffective, but also have side effects, especially for students, which affect their physical development and health. Finally, I wish you success in your studies and effective weight loss.