Did anyone have family members with pulmonary fibrosis (usually diagnosed when 50+ years old)? Just asking because my daughter was just recently diagnosed with CF and we have no family history of CF. But, my father and grandmother both died of pulmonary fibrosis (age 65 & 73). Just wondering if they could have had undiagnosed CF that slowly/quietly caused lung damage. There is no known cause for pulmonary fibrosis and drs think it probably has many causes. Just wondering if any of you more experienced CFers know anything about this or have an opion on it.