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Anonymous08/17/26, 02:05No.17037680Why hasn't evolution selected against schizophrenia?
Schizophrenia drastically reduces fitness and is highly heritable, with 80% being a common figure for how much of it is up to genetics vs environment. People usually don't get it unless a close family member also had some kind of psychotic disorder. So why the hell hasn't it been bred out? I've been googling around for the past half hour and the explanations I've seen include
>schizophrenia is a bad construct that actually describes a number of diverse disorders
>schizophrenia is actually being selected against and used to be more prevalent
>the polygenes implicated in schizophrenia increase fitness when a few are expressed, but when too many are expressed, you get a cliff-edge effect
>schizophrenic people in hunter-gatherer societies don't suffer from their hallucinations like westerners do, mitigating its impact on fitness until recently
>schizophrenic people in hunter-gatherer societies gained prestige for their families because they were seen as shamans, and their families passed the genes along
What does /sci/ think about this question that is relevant to biology and psychiatry and is DEFINITELY NOT OFFTOPIC

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Anon08/17/26, 02:41No.17037688
Evolution means you survive long enough to have kids and those kids survive. If you go schizo at 25 but have had 3 surviving kids beforehand than that's survival of the fittest.
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Anon08/17/26, 02:57No.17037694
Schizophrenia is a modern term used to demonize the shaman/witch doctor/oracle class of humans. It was done to separate us from the divine and the people who helped bridge the gap between civilization and the gods.You notice how mental illness only started becoming a problem for humans in the last 150 years and guess who started the trend?>Jewish minds were extraordinarily prominent and foundational to the birth of modern psychology right from its start in the late 19th and early 20th centuries. Rather than joining an already established field, Jewish thinkers were instrumental in building the major architectural pillars of psychology from scratch.Evolution didn't select against it as it wasn't an issue until jews made a whole fake industry to say it was. If you were smart you'd realize nature is smarter than jews. Nature tells you "schizophrenia" is good, it gets passed on. Jews tell you it's bad, demand money to fix it. You retards trust the shisty jew shaking the shekels out of your pockets for pills and billable hours. You're using backwards circular logic trying to say modern psychology is smarter than nature, it's not. Nature is smarter hence you should trust nature. Most "schizophrenic" people are harmless and when left to their own devices do just fine, especially in an environment more natural for the Homo Sapien like hunter-gather tribes. You make giant concrete prison towers called offices and force hairless apes into suits and make them sit under artificial lights 10 hours a day every day. Then you wonder why some don't adapt to this new life of factory farming hell? I mean seriously, wake the fuck up and use your fucking brain.There is nothing wrong with "schizophrenic" people, there is something wrong with the world.inb4 mods try to ban me, not my fault it's always the jews. Jews made psychology and psychiatry. It's historical fact.

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Anon08/17/26, 03:00No.17037695
I was thinking of it myself. My own intuitions:
1. Religion gives a place and direction to schizophrenia (as you said)
2. Schizophrenia/delusions helps the bottom of society to accept their terrible conditions. Stress is a huge and underrated factor of unreproducibility. There might be a break point where the negative effect in fitness of schizophrenia is actually less worse than that of stress.
3. Schizo are actually useful for the hierarchical structure of society, as they weaken the plebs' ability to organize by being nuisance/distractions/unfocusers. You see this shit on 4chan pretty often, with schizo completely derailing discussions.
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Anon08/17/26, 04:16No.17037717
Schizo literally HAS been selected-against
https://www.biorxiv.org/content/10.1101/2024.09.14.613021v1
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Anon08/17/26, 06:05No.17037746
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Anon08/17/26, 07:54No.17037766
>schizophrenic people in hunter-gatherer societies gained prestigeLet' me guess, that's because they hear voices? UwU shamans!Nonsence. Schizos are always take the lowest place in the society. They are disturbing, stupid and dirty. Talking to a schizo is like a talking to a retard who refuses to understand that she's retard. At the same time they are easily influenced by cults and /x/ grade information.>Why hasn't evolution selected against schizophrenia?
Did you check the numbers, retard? 0.3% of population.Why it wasn't completely eradicated? Because it progressing slowly and creates real problems beyond reproduction age. At 18 schizo looks slightly quirky, at 60 he'll paint walls with his shit.

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Anon08/17/26, 10:59No.17037791
By that logic there should be no defects in organisms at all.
Evolution isn't magic, it can't do everything. If beneficial adaptations work in most but break in some that still works overall.
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Anon08/17/26, 15:29No.17037857
Everyone used to think that voice in their head was god telling them what to do. The world was 100% schizoid. We would eat moldy bread and speak to demons.
Things have gotten better.
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Anon08/19/26, 03:47No.17038615
schizophrenia/psycosis is not a disease, and its not genetic.
*leaves the room*

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Anon08/19/26, 08:41No.17038677
When you take a complex organism outside of its normal environment and subject it to cruel and bizarre stresses, it may malfunction.

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Anon08/19/26, 21:07No.17039048
Because it doesn't typically happen until your partner is old and you already had kids with them. What sort of retarded question is that?
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Anon08/19/26, 21:12No.17039053
Too much schizophrenia is bad.Some schizophrenia (schizotypal behaviours) can lead to profound insights.Too much of anything is poison.
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Anon08/19/26, 22:08No.17039089
Can anyone of you guys even describe schizophrenia accurately?The textbook definition is just to put crazy people on pills and in institutions.
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Anon08/19/26, 23:43No.17039122
Because men love fucking crazy horny schizo girls
And male schizos are often convicted rapists
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Anon08/22/26, 10:47No.17040555
I think the poly gene explanation is the best, a little bit of the genes turning on can be a benefit but when they all turn on it’s badI’m diagnosed bipolar and am a fat smelly neet on welfare bux meanwhile one of my brothers became a cto of a medium sized tech company before 35 and my sister is an accomplished attorney from a t14 school. meanwhile I struggle to keep a job part time at a warehouse. people say I’m smart thoughyeah I’m probably gonna rope soon
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Anon08/22/26, 11:12No.17040561
Survival advantage
Stress doesnt kill, tiger does
If you are tweaking at every noise or context clue you see it might be helpful
Its not paranoia if they are really after you and in the wild they really are after you
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Anon08/22/26, 20:14No.17040768
because schizophrenia is caused by one of these three;1) intracellular bacteria (in brains)
2) toxoplasma parasite (in brains)
3) some other parasitic bacteria maybe lyme (in brains)>being genetically predisposedjust means that you cant handle these parasites while everyone else can
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Anon08/23/26, 20:23No.17041260
>schizophrenic people in hunter-gatherer societies don't suffer from their hallucinations like westerners do, mitigating its impact on fitness until recentlyIts probably just a story some not so rigerous antropolgists ran with, muh community and stigma made weterns hallucaite while hunter gathers dont isn't a real result. The first claim is also doubtful given how genetic and one directional the genetic load is.
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Anon08/23/26, 21:35No.17041319
Having a violent nutcase who always thinks the tribe from beyond the valley it out to get them is probably useful until it goes too far, much like height is useful until you end up with 8 foot dudes who die at 40 from boneitis.
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Anon08/23/26, 22:19No.17041366
Women and men like fucking hot schizos. Simple as that. Also schizophrenia typically presents itself at 25 for men and 35 for women. That gives more than enough time to pass on offspring.
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Anon08/24/26, 06:11No.17041568
how to start a religion without it? to fool everyone you first have to fool yourself.
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Anon08/25/26, 03:49No.17041972
... low latent inhibition when present with high IQ manifests as genius level creativity but if the latent inhibition and/or IQ is too low it manifests as schizophrenia.genetics isn't as simple as "bad gene bad good gene good" -- genes and phenotypes interact in complex ways with each other and the genes/phenotypes associated with schizophrenia are a prime example of that complexity.
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Anon08/25/26, 07:52No.17042028
Schizophrenia is a consequence of higher IQ in higher order mammals. To select against it would be to lower our brains capacity for complex thoughts.
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Anon08/27/26, 11:45No.17043091
Modern people are more schizophrenic than people in the past. Any other answer is a lie.
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Anon08/27/26, 11:57No.17043094
Schizophrenia was actually good for group health because schizophrenics occasionally murdered bad leaders, meaning groups that produced schizophrenics more often were more likely to survive over time.Shit was working fine until we invented private security and fucked the system up.

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Anon08/28/26, 02:06No.17043394
>Schizophrenia drastically reduces fitness
prove unmedicated schizophrenia in historical times was a fitness detriment. Are you sure voices in your head can't inspire or encourage you or command you to do things in God's name or something like that as a motivational force?Most of the quality of life loss in schizophrenia is NOT from hallucinations, its from cognitive problems, lack of motivation, anhedonia etc, which are all side effects of neuroleptic medication, look up what haloperidol does to long-term users' brains. Psychiatry has turned schizophrenia into a drug-induced syndrome more or less
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Anon08/28/26, 14:11No.17043525
>with 80% being a common figure for how much of it is up to genetics vs environment. People usually don't get it unless a close family member also had some kind of psychotic disorder.
Pseudoscientific BULLSHIT, if your parents are schizos you're way more likely to be schizo obviously, that does not mean it is mostly genetic.Psychiatry is NOT science and should not be treated as if it is.
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Anon08/31/26, 07:43No.17044877
It essentially has, for congenitally blind people anyway, since there are no known congenital blind schizophrenics in all of medical/psychological history.
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Anon09/02/26, 15:35No.17045808
Schizophrenia is not what you think and the accepted definitions were planted in text books by the CIA as cover when they are breaking smart people or people who know to much.All of these psychs have never had mental health problems. Maybe a few have had anxiety. So you get told all your career about people having delusions and normally its just the intelligence community trying to fuck the up so bad their brains break.It's more of a though disorder than all that stuff and glowies actually find the pattern recognition stuff an attractive quality.Paranoia for example, if you have been brought up in a nice comfortable life you probably have very little paranoia. If you have been raised in hell, surrounded by drug addicts, theives and scum bags you probably have a high sense of paranoia. These things make a difference.
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Anon09/03/26, 04:43No.17046096
whatever happens after you have baby is not as important, evolutionarily speaking. life is like
>fuck you, got mine, piss off
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Anon09/03/26, 13:21No.17046227
I'll take the second answer you listed as the most probable.
A lot of the explanations for the crazy shit that went on throughout history and a majority of major religions can all be explained with humans being more and more batshit the farther back in history you go.

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Anon09/08/26, 13:47No.17048953
>if God real why bad thing happen?
>if evolution real why bad thing exist?
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Anon09/08/26, 19:19No.17049250
1. Schizophrenia is a spectrum, not all that have some symptoms are totally insane.2. Schizophrenia is somewhat heritable. Studies show relatives of schizophrenics who are NOT schizoid still have higher than average "mystical thinking".Source: https://pmc.ncbi.nlm.nih.gov/articles/PMC7465115/3. Studies focused on the link between shamanism and schizophrenia show that some "...may have a schizophrenia-like psychotic process which is managed or mitigated by their religious practice, in that they are able to function effectively and are not identified by their community as ill."
Source: https://pmc.ncbi.nlm.nih.gov/articles/PMC11362382/4. Histotically, we know shamans / religious leaders were often powerful or revered, and as such often had offspring.tl;drNot all "shamans" were batshit, some were successfull in life, but still mentally ill to some degree.But batshit was in their genes. They bred, and some offspring were fully-batshit - some were not.Hence why evolution has not removed schizophrenia.