Cannabis is extremely useful in the fight against primarily brain tumor, and all cancer really. It forces the cancer to kill itself and then eat itself.
Cannabinoid action induces autophagy-mediated cell death through stimulation of ER stress in human glioma cells
Delta9-tetrahydrocannabinol (THC) induces apoptosis in C6 glioma cells
A combined preclinical therapy of cannabinoids and temozolomide against glioma