• What is Cystic Fibrosis?

    Cystic fibrosis is a lifelong disease that affects the lungs and digestive system. About 30,000 children and adults in the United States have CF (70,000 worldwide). This disease is caused by a defective gene that makes the body produce very thick, sticky mucus. This mucus:

    • Clogs the lungs and leads to lung infections
    • Blocks the pancreas and prevents the normal breakdown and use of food by the body
    Learn more about Cystic Fibrosis in our Health Topics.

  • Glossary of Terms

    Read an extensive list of glossary terms (A to Z) associated with cystic fibrosis in portable document format (PDF). Courtesy of the Baylor College of Medicine.
    Download the Glossary