Certain cannabinoid drugs have been approved by the US Food and Drug Administration (FDA) to relieve nausea and vomiting and increase appetite in people with cancer and AIDS. There are many reports on Marijuana oil can cure cancer, as well as diabetes, ulcers, arthritis, migraines, insomnia, infections, and many other diseases. But there are no scientific support reports with these claims. I am sure smoking cannabis does not assist a great deal in treating any disease within the body as therapeutic levels cannot be reached through smoking. Cannibis oil might help in boosting your natural immune system but I doubt it can cure cancer in later stages.
Relying on marijuana alone as treatment while avoiding or delaying prescribed medical care for cancer may have serious health consequences.