The closest to reality anyone tried to describe are Dr. Amen’s ADHD “types” and regions of the brain related to attention-deficit symptoms. But it’s much more complex. E.g. when you don’t process Folic Acid due to MTHFR mutations, chemicals can be generated that cause other genetic mutations in the brain over time, causing psychosis. And some stimulants with likely undiagnosed predisposition of paranoia can cause schizophrenic-like symptoms for years. If you just take what a psychiatrist or even the supplements that Dr. Amen would suggest, it may be a miracle for some people, but for others that miracle may turn into a nightmare. I didn’t recognize that I was having hallucinations and paranoia until years later.
I’ve found a set of things that I eat and natural supplements that work for me, and it took years of struggle. I miss the meds, but they didn’t make me better, they almost ruined my life.