We know that diabetes is caused by someone's body losing its ability to make insulin. Our bodies make glucose from the food we eat. This is why we try to keep blood sugar at about the same range as people without diabetes. Most of the terrible side effects of diabetes can be avoided with careful control of blood sugar.
Blood sugar is very important to everyone's brain and nervous system.
When a person with diabetes has low blood sugar, it is an emergency. Their bodies react to the emergency by releasing the hormone adrenalin or epinephrine into their blood stream. If you are hiking in the woods and see something scary, or you feel shy before doing a speaking assignment at school, your body prepares you to have the extra energy to run away or to fight. The emergency chemicals are trying to raise your blood sugar so the glucose can give you the extra energy you need. You have learned to be brave and smart so that you can think of better ways to deal with some scary situations than run or fight.