Why is it important that glucose levels arent allowed to get too high or too low?

Answer 1

The main mission of your body is homeostasis. This basically means that your body wants to keep at the same state at all times. In the case of glucose, your body has a set "acceptable" range of glucose that it thinks should be in your blood. When there is too little or too much glucose in your blood, your body activates processes to fix the situation. In the case that your glucose levels are abnormal, it indicates that your body's natural processes to correct the imbalance aren't working properly. This can indicate other problems, which are of interest to doctors to keep you healthy!