Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Cystic Fibrosis ?
    ### Response:
    Cystic fibrosis (CF) is an inherited disease of the mucus and sweat glands. It affects mostly your lungs, pancreas, liver, intestines, sinuses, and sex organs. CF causes your mucus to be thick and sticky. The mucus clogs the lungs, causing breathing problems and making it easy for bacteria to grow.
    