What is cystic fibrosis?

Cystic fibrosis (SIS-tik fi-BRO-sis), または CF, is an inherited disease of your secretory glands, including the glands that make mucus and sweat.

"Inherited" means that the disease is passed through the genes from parents to children. People who have cystic fibrosis inherit two faulty cystic fibrosis genes—one from each parent. The parents likely don't have the disease themselves.

Cystic fibrosis mostly affects the lungs, pancreas, liver, intestines, sinuses, and sex organs.

Mucus is a substance made によって the lining of some body tissues. Normally, mucus is a slippery, watery...