Do you know about this? https://www.youtube.com/@LivingWellAfterSchizophrenia/
Mental illness is a metabolic disease, mine is caused by a problem with purine metabolism. (carbohydrates will turn into purines) Each person will be different. I have Schizoaffective disorder like she does. I would say we are remarkably similar in many ways.
I've also come to believe a mix of metabolic therapy and targeted supplementation (particularly B vitamins, chiefly B3), yields much better results than medications. And it seems the medical profession is slowly waking up to it too.