There’s a really interesting book about a family where half of the kids (6 out of 12) ended up with a diagnosis of schizophrenia. It was brutally sad and uplifting at the same time?
True story: https://www.amazon.com/Hidden-Valley-Road-Inside-American-ebook/dp/B07TZYFR71/
Written by Robert Kolker, who wrote ‘Lost Girls’ about the Long Island serial killings.