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

Read more about cystic fibrosis.

My Baby Had a Positive Newborn Screening

Read our newborn screening health topic to learn about next steps and what to expect after a positive newborn screening for cystic fibrosis.

More about Cystic Fibrosis in Our Health Library

Cystic Fibrosis and Exercise

Sweat Chloride Test

Related Topics

Airway Clearance 

Pulmonary Function Testing