Cystic fibrosis is a fatal genetic disease that affects approximately 70,000 people worldwide. Cystic fibrosis, also known as cystic fibrosis, is an inherited disease, which means that the affected person acquired the disease from their parents. To have cystic fibrosis, a person must inherit two defective copies of the CFTR gene. This means they will inherit one copy from each parent, and the parent will likely not have cystic fibrosis, making them carriers of cystic fibrosis. Cystic fibrosis is caused by a mutation in the CFTR gene. This gene is responsible for producing a protein that controls the transport of water and salt into and out of the body's cells (Explore Cystic Fibrosis). When the gene is defective, however, the result is thick, sticky mucus along with unusually salty sweat. Normally, mucus protects and lubricates the linings of the airways, digestive system, reproductive system, and other important tissues and organs. In the male reproductive system, men with CF are sterile because they are born without vas deferens. In the female reproductive system, mucus affected by cystic fibrosis can block the cervix, so preview...