Cystic Fibrosis is also known as muscular dystrophy is a swelling of the glands affecting the digestive and respiratory system. This disease causes a thick mucus to build up in the lungs that results in a chronic infection. Some treatments include pancreatic enzyme replacement. Most patients live between their 30's and 40's. If both parents carry the gene there is a 25% chance that the child will have the disease, and 50% chance the child will carry that gene.