Cystic fibrosis occurs when a child inherits a changed (mutated) gene from both parents. The changed gene causes problems with the way salt and water move in and out of the cells that make mucus, causing the mucus to be thick and sticky. This kind of mucus makes it hard for the body to keep certain organs clean and healthy.
Many people don't know they have the changed gene. If you are the parent of a child who has cystic fibrosis, it is important to remember that nothing you did caused the disease.
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WebMD Medical Reference from Healthwise
September 09, 2014
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