Chewing Gum and Your Digestive System

Did you know that chewing gum can trick your digestive system? At least that's what my doctor told me. Since chewing is part of the digestive process, when you chew gum, the digestive juices start to flow and your digestive tract does whatever it does when you eat but then it doesn't get any food. My doctor said this can cause air in the intestines. She said it's okay to chew gum for 5 minutes or so but then to spit it out.