The GLP-1 drugs are strong auto-immune regulators and neuroprotective and show promise with related disease:
https://www.mdpi.com/1422-0067/26/6/2741
https://aaic.alz.org/releases-2024/glp-drug-liraglutide-may-...
https://alz-journals.onlinelibrary.wiley.com/doi/10.1002/alz...
https://pmc.ncbi.nlm.nih.gov/articles/PMC11242057/
Some promise for autism and depression, though little with schizophrenia:
https://www.psychiatrist.com/pcc/efficacy-glp-1-agonists-psy...
https://www.news-medical.net/news/20250511/GLP-1-receptor-ag...