I personally would have done anything to fight my lung cancer if it improved my chances of living by just another day. So I had the surgery followed by concurrent chemo and radiation. That was 19 years ago.
Had someone told me that eating a pile of horse poop was helpful, and they had logical scientific reasoning behind it, then I would have tried it if it helped my chances even the slightest bit. That might sound extreme, but for my lung cancer, the surgery, chemo and radiation was far worse than eating 100 plates of horse poop. Still I went through those treatments because it was a “do it or die” situation.