Comment by alecst
I'm really sorry to hear that. Since you're asking for moonshots and weird things to try, here's something they can ask their doctor about:
> Case reports involving glioblastoma patients using water-only fasting regimens in conjunction with other forms of cancer treatment have reported favorable outcomes with respect to tumor growth https://pmc.ncbi.nlm.nih.gov/articles/PMC2874558/ https://pmc.ncbi.nlm.nih.gov/articles/PMC5884883/
I have a relative with glioblastoma who could see his granddaughter born if he extends his life a while. Thanks a lot for sharing!