Ever wonder why someone who never stop smoking lives to 80 or 90, but another who lives a healthy style get cancer? That is bad luck, the primary cause of most cancers, according to a research done by Johns Hopkins Medical Center.
So let's stop blaming the patients.
http://www.sciencedaily.com/releases/2015/01/150101142318.htm
http://www.hopkinsmedicine.org/news/media/releases/bad_luck_of_random_mutations_plays_predominant_role_in_cancer_study_shows
