I would never go near an absolute position that X cues cancer. GP is reductionist to an infantile level.

But - every cancer is different, every individual is different. One person loses weight by cutting calories, another starves herself to no effect but loses weight when switching to a high-fat diet.

I'm fine with the idea that some people might go into remission after a few long fasts. My objection to GP is not the hypothesis, merely the ringing of the bell.