Regardless, I will tell you something I know and have seen, but not necessarily about the brain but tumors and cysts.
Garlic is one thing and I have to check something out.
OK. it is called "Chaparral". The FDA has outlawed it here in the good ole' USA. My resource with the Latin Name is on loan to an aspiring herbologist. But this I know:

It is known as Maquis in the Med. Basin. In Chili it is known as Matorral. In So. Africa and Australia, it is known as Fynbos.
This herb dissolves and reduces tumors. I knew a woman, and hands on here, who was sent home with 30 days to survive because of breast cancer if she did not start the antibiotic the Dr. said to.
Absolutely not. Totally against our beliefs and knowledge.
She treated her tumors with this Chaparral.
Other things to that we know to do and believe in, but Chaparral removed the tumors.
She had a sore of them leaving on her breast for a year, anyhow.
Still alive and healthy. Both breasts. This was in 1994.