I wonder how effective the following strategy would be: As soon as you are diagnosed with any type of cancer, begin an immediate fast (duration TBD). The reasoning is that it hurts the cancer more than you, plus it provides a temporary boost in your immune system. It probably wouldn't provide a huge advantage, but heck, even if it only improves overall survival 1-3%? It'd be worth it.
Follow that with a raw vegan diet, with lots of avocados and cilantro.
Add traditional cancer treatment methods.