I lost my father 2years ago to lung and brain cancer.My life has been forever changed. I miss him so much. I think about him more now than when he was in the land of the living. My father suffered from being paranoid and not trusting people. I believe when the Doctors told him he was sick he did not believe them, so did not inform us either.He bagam to cough up blood years later and i believe he knew then. That's when he informed me and it was to late already stage four.