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How does cystic fibrosis affect the lungs?

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Cystic fibrosis is caused by an inherited, defective gene. In people who have it, the cells that make mucus, sweat, and digestive juices are thick and sticky instead of thin and slippery. This clogs passages in the body, including those in the lungs. People who have this disease often cough up mucus, wheeze, and get frequent lung infections.

Reviewed by Paul Boyce on May 20, 2020

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How does lung cancer affect the lungs?

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