If ch”v I did, why would I use a treatment which was tested and not shown to work?
From the American Cancer Society:
There have been some early clinical trials of cannabinoids in treating cancer in humans and more studies are planned. While the studies so far have shown that cannabinoids can be safe in treating cancer, they do not show that they help control or cure the disease.
Relying on marijuana alone as treatment while avoiding or delaying conventional medical care for cancer may have serious health consequences.
I will note that they do consider it useful in relieving some of the horrible side effects of chemo.