¿Despite healthy people eating the food rights and healthy with good exercise, how is it possible that people who take good care of themselves get cancer? But isn 't that supposed to be the other way around? You mean to say that people who don 't take care of their health and eat fatty foods, unhealthy gets cancer. I doesn 't make sense when healthy people like people not smoking, healthy, get healthy lung. I know that the causes of cancer are to eat unhealthy foods and not do many healthy activities. But my question is …… What is the cause of lung cancer for people who are not smokers and take good care of your health? The wife the actor Christopher tillage (tillage Dana) died of lung cancer even though she was a nonsmoker and a very healthy person. When you choose to answer my question, don 't reply with "that' s how it is" the life, or "that 's the way it is" or "life is unfair." Please give a specific answer to my question, elaborate. Is nature responsible?