Below is an instruction from Human. Write a response.
    ### Instruction:
    What to do for Gas in the Digestive Tract ?
    ### Response:
    - Gas is air in the digestive tract.  - Everyone has gas. However, many people think they pass gas too often and that they have too much gas. Having too much gas is rare.  - Gas in the digestive tract is usually caused by swallowing air and by the breakdown of certain foods in the large intestine by bacteria.
    