But his was actually one of the most treatable forms and he could have potentially had many many years added to his life had he initially listened to his doctors.

Yes I was downvoted last time I posted this, but: Don't try to be your own lawyer, and don't try to be your own doctor.

This is the tail wagging the dog.

Jobs' fruitarianism meant he didn't eat eggs, meat, dairy, or other sources of selenium. Fruit doesn't contain selenium. One of Selenium deficiency's side effects, well established in the literature: pancreatic cancer.