There has been research into cannabis and cancer. Check out you tube and Dr. Christina Sanchez from Spain, also Israel has alot of into. I have many members doing well using CBD tincture and RSO concentrated THC oil for their cancer. I can only report feedback that I get and those that are taking the RSO oil have had "unremarkable" CT scan results. No new growth, tumor size, basically no new activity for nearly a year.
There is no guarantee that the RSO oil will work for everyone, so I suggest you do some research on your own because there is alot of info out there!!