Because protein is an essential part of human body, if it is supplemented too much, it will produce deamination and turn protein into sugar or fat for storage. In other words, if you eat too much, you will get fat. And this process will produce nitrogen-containing substances harmful to the body, which can be called toxins. Generally, it should be made up according to the doctor's advice. If it is not a special case, it should not be made up. Even if you are pregnant, don't take it at sixes and sevens without special circumstances.