It’s interesting. I know the ketogenic diet, if provided in childhood, has helped people with autism before but never heard about it also helping sz, though sometimes the disorders are similar in nature. I think this could work if your psychosis was being caused by a dietary reaction/inflammation, but I do not believe everyone, or even the majority of peoples’ psychosis is caused by this. There are thought to be many different causes of psychosis, but we dont know them all so they are all lumped in as sz.