I found Robert Whitaker's books invaluable for helping me understanding the mental health industry's mindset. Mad in America covered how the Quakers got much better results with their Asylums (safe place with 4 meals a day & activities) than modern techniques of lobotomy, ECT'ers and palliative prescriptions. Anatomy of an Epidemic makes the case that palliative psychiatric prescriptions take an episodic condition and make it chronic. Psychiatry Under the Influence chronicles how psychiatry got captured by the prescription drug cartel. Highly recommended.
The good news from the mental health world is that Chris Palmer, M.D. published Brain Energy [0] last year. I haven't read more than excerpts from google books [1]. My understanding is Dr. Palmer was a conventional palliative psychiatrist, then he had a patient whose schizophrenia improved on a ketogenic diet. The patient was able to discontinue antipsychotics: Dr. Palmer's mind was blown. Then he discovered the 70+ years of research establishing that mental health conditions are metabolic problems, and wrote a book.
Perhaps the most bold and disruptive aspect of
Brain Energy is understanding precisely how and
why medications that harm metabolism might
reduce mental health symptoms.
The long-term consequences are of great concern
and require the urgent attention of the psychiatric
community.
Dr. Palmer recommends a ketogenic diet. I think most of the benefit of 'keto' stems from avoiding fortified flour: https://twitter.com/JamesKnochel/status/1595562197412851712
A lot of people are harmed by folic acid, and the iron and lack of fiber in fortified white flour is harmful for almost everyone, in that they disrupt the microbiome. Most people get adequate iron, and don't actually need iron filings ("reduced iron"); the fiber in whole wheat fiber feeds bacteria that make short-chain saturated fatty acids [2].
[1] https://books.google.com/books?id=FoxlEAAAQBAJ&pg=PT233&dq=B...
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4756104/
(edited to add [2] and some speculations on the mechanisms of harm of fortified white flour)