(HealthDay News) -- Cystic fibrosis (CF) is a genetic condition that causes a bodily protein to malfunction.
The faulty protein affects cells, tissues and glands. People with CF make thick mucus that can block, damage and infect organs.
Symptoms vary, depending on which organs are affected and the severity of the person's CF. Most seriously, lung complications can lessen the quality of life.
Treatments are available to improve lung function and help people with CF live longer, says the U.S. National Heart, Blood and Lung Institute.
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