If you like to chew gum please realize that you are ten times more likely to develop headaches and jaw pain. Your teeth, especially your back teeth, are designed to chew and move food around in order to digest. The teeth are NOT genetically engineered to be biting together when not eating food. The average person can bite their teeth together over 7,000 times per day as a “bad” habit. Gum chewers exceed 15,000 biting cycles each day. Our teeth and jaws are not structured for such “abuse.” Your teeth should not fully come together even when food is chewed. When you chew vegetable you will find your back teeth occluding (biting) down together. Chew slower and practice trying not to make your teeth come down together all the way. This will prevent headaches!