Well that explains Israel. A whole race of autism.
It was around 50%, so if it is the case, it turns it into a coinflip. This doesn't account for any other possible causes, or some genetic component (circumcision in Europe would most heavily be carried out by Muslims) but I think it the rates of autism can correlate. Eastern Europe also having high rates but comparatively lower Muslim and circumcision rates is why I don't put it on that, I pin it on that specifically.
As
@big pauper said, it covers a spectrum of disorders. The Chris-Chan-like autists who develop bizarre fixations could be the result of youth overstimulation, maybe. Such kids might diverge off into expies of Chris Chan for their chosen fixation with differing degrees of intensity or develop some form of ADHD, maybe. Though if you were to define "unusual fixation" as being completely autistic, you could paint many people with that brush lmao.
Part of the stimulus idea also came from population urbanisation, or rather, how heavily was the population concentrated into large cities as opposed to being spread out more.
Prevalence of autism in children under five

The article attempts to correlate it with a lack of resources, but look at the population density map.


Countries where the population are concentrated into fewer cities correlate with higher rates. Japan and South Korea really are highly concentrated in a handful of large metro regions, whereas the UK is comparatively more polycentric.
Under this criteria India is a breeding ground for autism given it has both high density and high concentration. It would also, bizarrely, give an explanation as to why they are the way they are by and large—India is the most autistic nation on Earth.
Under this premise Sweden seems like an outlier, but its relatively small population is largely concentrated into 3 cities. Belgium has higher population (12 million to 10 million), higher on-paper density, but the population is more spread out relative to the Swedes.


3 major metropolitan hubs vs >5 major hubs
In South Korea,
76% of the population lives in cities above 500,000 people, versus the UK at 56%. Tokyo alone contains 30% of the Japanese population.
In Sweden,
41% of the population is contained within Malmo, Gothenburg, and Stockholm, 20%+ in Stockholm. Compare to the UK, where London is a little over 10%.
The only thing is this could just be a correlation with no link and it might fall apart with further cross-referencing. There's similar stuff in Mexico and the USA where the most autistic states also have the highest population density/concentrations.
Autism absolutely has a link somehow to the gut and I believe that sincerely. Exactly what that link is I don’t know. But your gut affects your whole health, and your brain in particular.
This is an out of nowhere comparison but a while back they found similarities in the brains of
homosexual males and heterosexual females, and lesbian females and heterosexual males.
One of the subheadings said: Findings may throw light on depression and autism
The findings, published tomorrow in the US journal Proceedings of the National Academy of Sciences, suggest the biological factors that influence sexual orientation - such as exposure to testosterone in the womb - may also shape the brain's anatomy.
The study, led by the neurobiologist Ivanka Savic, builds on previous research that has identified differences in spatial and verbal abilities related to sex and sexual orientation. Tests have found gay men and straight women fare better at certain language tasks, while heterosexual men and lesbians tend to have better spatial awareness.
Savic and her colleague Per Linström took MRI brain scans of 90 volunteers who were divided into four groups of similar ages according to whether they were male, female, heterosexual or homosexual. The scans showed the right side of the brain in heterosexual men was typically 2% larger than the left. Lesbians showed a similar asymmetry, with the right hand side of the brain 1% larger than the left.
Scans on homosexual men and heterosexual women revealed both sides of the brain were the same size.
The results could explain a University of London study earlier this year that found gay men and straight women share a poor sense of direction compared with heterosexual men, and were more likely to navigate using landmarks alone.
The right hand side of the brain dominates spatial capabilities, so may be slightly more developed in heterosexual men and lesbians. An earlier study by the same team found gay men and straight women outperformed lesbians and straight men at tasks designed to test verbal fluency.
Savic's team has yet to confirm whether the differences in brain shape are responsible for sexual orientation, or are a consequence of it. To find out, they have begun another study to investigate brain symmetry in newborn babies, to see if it can be used to predict their future sexual orientation.
"These differences might be laid down during brain development in the womb, or they could happen after birth, though it could very likely be a combination of the two," said Savic.
In another series of tests, Savic and Lindström used a technique called positron emission tomography (PET) to look at brain wiring in a smaller group of volunteers. They found heterosexual women and gay men shared brain circuitry linking a region called the amygdala, which plays a key role in emotional responses, to other parts of the brain.
The research is part of a larger effort to identify differences between the male and female brain, in the hope they will shed light on why some mental disorders affect men and women differently. For example, major depressive disorders are far more common and persistent in women, while autism is around four times more common in boys than girls.
"There's a well known uneven sex distribution in the number of psychiatric disorders and trying to understand sex differences, and differences in orientation, may give you a hint of the mechanism underlying these diseases," said Savic.
It's possible that if certain foods can affect hormones and the shape of your brain whilst in the womb/while growing up. (An IRL friend of mine, humouring my theory, pondered whether the diet of the Japanese/Koreans was responsible for their high rates of autism)
It's wholly possible that a pre-natal woman's diet could affect the probability of a child coming out autistic.
But also it could be a combination of things which helps make it even more complicated.
1. What you eat whilst pregnant
2. What your child eats whilst their brain is still developing
3. What stimuli your child is exposed to in infancy and pre-adolescence
They found
brains of autistic adults have fewer synapses in their brains which could point to—according ot my theory—a lack of non-stimulus in infancy since silence is necessary for brain repair, however certain foods can inhibit neurogenesis, which means if your child's brain was overwhelmed or suffered some sort of damage, and you're feeding them nothing but shit (high sugar, Vitamin A, B, and D deficiency), then before it's even diagnosable you could be in-part responsible for your child's autism.
Because neurogenesis is strongest when we're young, it's possible this damage is done but is then repaired before it can stick. But in environments where the healing is much harder to start (lack of silence i.e. big, noisy cities) it might be slowed to the point where it has life-long consequences.
Edit:
Vitamin A, B, and D foods are mostly composed of things that you'd not so easily consume if you were a vegan/vegetarian, which'd do a lot to explain India's autism. Milk and dairy is also an easy source of Vitamin A outside of "oily fish" and "liver/liver products" which'd bizarrely explain the correlation you could drawn between autism and lactose intolerance. It'd explain Greenland. "Lack of Vitamin A" being the ultimate cause of autism would be kind of funny. A lack of eggs, liver, or dairy could be what determines whether your kid ends up autistic or not.

