I have seen some references that cannabis oil cures brain cancer. Another suggestion check your body pH and eat something like the 80-10-10 diet to change it. Lastly the Essene Gospel of Peace has information on fasting as a cure, as an ancient practice.
I would give up all cooked and processed food and only eat raw organic food. In this order of importance: fruits, vegetables, nuts & seeds.
Limit dairy & animal foods, preferably raw if available. The difference is whether your body is acidic or alkaline, one promotes health the other degrades it. Avoid processed sugars also, and most grains, which if used should preferably be sprouted.