Pulmonary Fibrosis is a life-threatening lung disease that affects over 90,000 Americans over the age of 50. People affected by Pulmonary Fibrosis develop progressive scar tissue in the air sacs of their lungs, which leads to shortness of breath, disabling cough, and most people die from lung failure within a few years of their diagnosis. Pulmonary Fibrosis has taken the lives of a number of famous people, including Marlon Brando, Robert Goulet, and Evel Knievel.