My mom is a "schizophrenic" and I can personally verify based on her behavior that she is in a FAR worse state after years of terrible medications like Haldol, Zyprexa, Lithium, etc. Wheras before she was a delusional religious fanatic, now she's more like a robot unable to feel human emotion - you can hear it in her voice. When my grandmother originally explained schizophrenia to me several years ago, the whole idea sounded very strange to me....
I'll be showing this video to my grandmother and my guess is that she's going to get very defensive when these topics are brought up, because if there is no scientifically verifiable physical manifestation then it means her parenting is responsible for such a mentally unhealthy person.