Chemotherapy isn't safe, either. It kills people, but that's ok with you, because it's approved. I suggested the program outlined in Ann E Frahm's book, A Cancer Battle Plan. I mentioned the Gerson Therapy because people HAVE become recovered from cancer by using it. I wouldn't go to Tijuana, either, but the fact that is in Tijuana has to do with the fact that it is close to the U.S. and that the AMA and FDA which is mostly interested in protecting their profits banned it. It was legal in the 50's, and was equally poised to become the dominant cancer treatment in the U.S. from what I understand, but big money won out, as in the drug companies bought the approval they got.
As far as twenty pounds of produce, it takes a lot of produce to make a glass of juice. 20 pounds of liquid is 2.4 gallons, but about half of the weight of the vegetable is lost as the fiber, so maybe 1 .2 gallons of juice. The recommended water intake is 8 8 ounce glasses of water a day, which is a half gallon, so its only twice what that is. Plus, you don't drink water , you drink juice when on the Gerson. Neither Gary Null not myself agrees with the use of raw liver in therapy, but Gerson's grandaughter believes in sticking strictly with his original program instead of evolving it, despite Gary Null's attempts to convince her that Gerson was an innovator and would have changed it based upon what is now known.
Chemotherapy and radiation kill people while they kill the cancer. Sure, they definitely kill cancer, but they kill the body's healthy cells, too.
As far as your father, I am sorry about that, but remember my my mother had at least two incompetent allopathic doctors. An oncologist who saw he every 6 months for 10 years who couldn't even tell she had cancer, and had to wait until she was so fatigued she had to go to her regular doctor to be told she had it, and then there was the bozo who didn't cut the 6 foot tube down to size before putting it in her, leading to it wrapping around her intestine and leading to emergency exploratory surgery to find out why she couldn't move her bowels, and then the anesthesia for that surgery took her liver function offline because it was so damaged by the cancer and the chemo already. She died as a result. All she had was colon cancer, too, which is SUPPOSED to be one of the easiest to treat, but when there incompetent regular M.D.s on the case, approved by the AMA, she ends up dying because of their incompetence. They were so incompetent it was unbelievable, but my father didn't see the point of suing, because it wouldn't bring her back, and their insurance premium would just go up a little and they would keep on doing as they do.
There are incompetent people in both the approved AMA field and in natural medicine, just like there are bad mechanics and bad plumbers.