I asked John McDougall, MD this question:
"Re cancer: Are there any circumstances in which you would recommend chemo or radiation?"
I was actually surprised at his answer. This was his reply:
"Yes - but in many diseases (cancers) these tools have limited ability to change the course of the disease favorably. And the treatments are so toxic and costly.
Radiation can control local disease.
Chemo works for problems like leukemia."