I've heard that people who develop stress/sleep deprived related psychosis over a period of two years are already sensitive towards developing it. The same people also should not take drugs, for example, such as weed.
Citation...?
Citation...?
https://www.thelancet.com/journals/lanpsy/article/PIIS2215-0...
I also said that my other information was from people working in the field. If I say something like that, then I implicitly mean that I couldn't find it on the internet, which I find an interesting thing in itself.