My brother thinks it CURES cancer. It manages the pain, I never heard it was the cure. If that were true it would be a medical miracle. I know a doctor who said it doesn't cure it, and they give it to people with cancer (and now seizures) because it manages pain and stops seizures. They give addictive medicines to people with terminal illnesses, or at least used to, because the addiction part doesn't matter as much. It used to be a last resort thing to do.