Cancer did not Kill Jobs, Job's belief in alternative medicine did.
Despite the expert consensus on the value of surgery, Jobs did not elect it right away. He reportedly spent nine months on “alternative therapies,” including what Fortune called “a special diet.” But when a scan showed that the original tumor had grown, he finally had it removed on July 31, 2004, at Stanford University Medical Clinic.
http://www.thedailybeast.com/articles/2011/10/05/steve-jobs-dies-his-unorthodox-treatment-for-neuroendocrine-cancer.html