Cystic Fibrosis :: Symptoms and Facts :: 591

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Health Issues

Cystic Fibrosis Symptoms and Facts

Cystic fibrosis (CF) is caused by a defective gene which tells the body to produce abnormally thick and sticky fluid, called mucus. This mucus builds up in the breathing passages of the lungs and the pancreas, the organ that helps to break down and absorb food.