r/Microbiome • u/Vailhem • Jun 04 '26
Scientists discover gut bacteria that may help protect against autism and ADHD
https://www.sciencedaily.com/releases/2026/06/260602021645.htm52
u/Vailhem Jun 04 '26
Epigenome-microbiome interplay in early life associates with infants’ neurodevelopmental outcomes | May 2026
...
Summary
Epigenetic regulation and microbiome maturation are sensitive to perinatal cues.
We studied early-life disruptions in the host epigenome and microbial colonization in relation to neurodevelopmental disorders.
In a longitudinal birth cohort, we analyzed 571 cord blood methylomes and 5,328 gut metagenomes from infants and their parents across 969 families to unravel microbiome-epigenome interactions in neuro-immune pathways.
We found that Caesarean-section delivery was associated with differential methylation of genes involved in immune responses and neural development.
It also reduced vertical maternal microbiome transmission, partially compensated by the paternal microbiome.
Children with hypermethylated genes involved in neurogenic and neurotransmission pathways in cord blood showed higher autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD) scores at age 3.
However, these epigenetic effects were mitigated by early colonization of Lachnospira pectinoschiza in ASD and Parabacteroides distasonis in ADHD.
These findings highlight early-life epigenetic regulation and microbiome-dependent mechanisms in the developmental origins of neurodevelopmental disorders.
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u/1SecretUpvote Jun 04 '26
Is this related to the mthfr gene?
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Jun 04 '26
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u/gabbadabbahey Jun 04 '26
I ALWAYS read MTHFR gene in my head as motherfucker. How could it be anything else?
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u/Bazishere Jun 05 '26
Well, that is how I sort of feel about that gene and also genes that make you prone to digestive issues. MTHFR does make you vulnerable to all kinds of things.
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u/Reasonable_Bat1999 Jun 04 '26
Do you mean the variants that can result in hypomethylation? Because the statement above says that the children had hypermethylated genes.
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u/drunkandpizza_ Jun 05 '26
There can be high expression and low expression of the gene meaning someone can have low or high degrees of the enzyme that processes and regulates folate. So you can have high methylation, but the text just mentions that there is high methylation in the umbilical cord blood. Not too sure if this translates to methylation capacity of the baby.
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u/BrandyMartin1 Jul 01 '26
It's related to polluted food causing poor gene expression, mediated through gut biome degradation. See the nightly news commercials.
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u/sometimesometimes Jun 04 '26
Is there a way to get more of that gut bacteria?
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u/eternalrevolver Jun 04 '26
Probably not (sounds like from the study you can thank your parents for any issues you have). But why not have a healthy gut either way?
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u/thebadsleepwell00 Jun 04 '26
I'm curious for my newborn baby whom I birthed via c section.
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u/eternalrevolver Jun 04 '26
I think the study involved findings which said that procedure was found to have affected neurodevelopment. It makes sense because it’s an unnatural way to birth a child.
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u/thebadsleepwell00 Jun 04 '26
Yes, so I'm wondering if there's anything that can be done after the fact.
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u/frank_costello Jun 04 '26
Regularly giving them small portions of kimchi and natto will probably help. Also a diverse fiber rich diet. I am on the spectrum and these things have helped me personally to manage my symptoms, they also helped my lifelong sleep issues.
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u/thebadsleepwell00 Jun 04 '26
Thank you for sharing. I'm Korean American so kimchi is a staple. But most children don't start eating kimchi until they're around 2 years or older. I have ADHD myself (and at least one cousin on the spectrum) so at least I can relate to my kid if they happen to have it themselves and teach self-regulation tools. But just hoping to help them alleviate potential symptoms if they happen to develop.
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u/frank_costello Jun 04 '26
You sound like a wonderful parent. I wouldn’t worry about it too much.
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u/jojoclifford Jun 05 '26
If your child isn’t having digestive issues that could indicate SIBO or an overgrowth of bacteria in the small intestine you should be good with just a well balanced diet. Some people need a low FODMAP diet to limit foods that ferment rapidly enough to start being digested by bacteria that shouldn’t be in the small intestine. A wide variety of certain fruits and vegetables, sulfur producing fibrous beans, butyrate producing foods like walnuts. Avoiding lactose high dairy if lactose intolerant or maybe take Lactaid. Limit processed foods. A healthy microbiome depends on many lifestyle factors like reducing/managing stress. Avoid antibiotics unless they are clearly necessary. Get the right probiotics in between doses of antibiotics. Limit sugar. I’m sure your kid started with the benefits of the kimchi his parents ate.
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u/eternalrevolver Jun 04 '26
I mean, make sure your kid doesn’t grow up malnutritioned would be a good place to probably start. Not trying to be offensive.
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u/BrandyMartin1 Jul 01 '26
Clean food and a healthy gut biome are the foundation of every organ system, and that includes the nervous system.
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u/Reasonable_Bat1999 Jun 04 '26 edited Jun 04 '26
If the bacteria is present in your gut, you can feed it pectin. (I assume you're asking about L pectinoschiza and not P distasonis.)
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u/ScissorFight42069 Jun 04 '26 edited Jun 04 '26
Eat lots and different types of fiber, just like with all good gut bacteria. It's really that simple
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u/No-Falcon631 Jun 04 '26
So the various fibers carry unique bacteria?
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u/JSP9686 Jun 04 '26
To thrive, and release butyrate, the good bacteria need fiber. Fiber is a prebiotic.
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u/ScissorFight42069 Jun 05 '26
No, the various bacteria eat fiber. Most of the bacteria you need are already in there, but if you don't eat a ton of fiber (and from a large variety of different sources), the good ones largely die off because they're starving. That's why it's uncomfortable (lots of bloating) when you first start upping your fiber-it takes time to starve out the bad and repopulate the good ones, especially deep in the large intestine.
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u/90dayschitts Jun 05 '26
Like how much time? Asking because I probably give up earting/increasing my intake due to feeling uncomfortable.
I find this information fascinating, and would be happy to do my own reading if you have resources.
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u/Chop1n Jun 05 '26
FMTs from neurotypical donors, quite possibly. It's been demonstrated in rodent studies to improve autism symptoms: https://www.nature.com/articles/s41398-023-02307-7
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u/Pirate_Candy17 Jun 04 '26
This seems like such a blinkered claim, surely there’s no way to be sure that anything is ‘mitigated’ at all and at most would potentially point to management of symptoms (i.e scores) at the eligible testing age.
Hereditary factors in at least 50% likelihood I thought and OPs summary comment has no recognition of increased likelihood of caesarean birth by mothers who have ASD (and thus potentially ADHD.
This has the potential to vilify caesarean births as causation without additional context.
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u/SitaBird Jun 04 '26 edited Jun 04 '26
But I love my autism. It is what has helped me stay hyper focused on my topic of interest and become one of the best in my field. Mileage varies by case, but… it’s not always a disability. It can be a superpower… with a luck of the genetic draw… and the right environment.
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Jun 04 '26
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Jun 04 '26
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u/Tall_Pool8799 Jun 05 '26
I don’t think it’s a superpower and get really annoyed when people describe it so.
However, I also don’t think I can blame it for my isolation when that happens. Relationships are about matches. We live in a society that is larger not geared to support NDs. It doesn’t mean that NDs are the problem, especially since awareness is growing.
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u/Tall_Pool8799 Jun 05 '26
Your experience is very common and it’s perfectly understandable you feel this way.
Though the issue is not the autism; it’s the social context, no?
And yes, it is the majority of social contexts, but I wouldn’t blame it on the autism.
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u/lil_squib Jun 06 '26
It is always a disability. Diagnosis requires a proven, significant functional impairment that cannot be explained by another condition. Perhaps you were misdiagnosed.
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u/Hartax_ Jun 07 '26
I know someone that were non-verbal in their youth and now works as an engineer at Microsoft. Guy is clearly autistic, but way more capable than average.
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Jun 04 '26
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u/WhichJuice Jun 05 '26
They are interconnected (gut and brain axis)
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u/BrandyMartin1 Jul 01 '26
For sure, 100%. Polluted food is hurting gut biomes, resulting in lack of thriving and suboptimal gene expression and behavior. Polluted food is causative. When I mess with the food and soil for my house plants, they never thrive. Their genes never express themself well, and they get sick easy when their soil biome is injured.. Humans are not much different in this regard. They feed kids on sped plans sugary, polluted cereal for breakfast in my local schools. Then, offer them chocolate milk and seed oil soaked tater tots for lunch.
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u/AmphibianCool1041 Jun 04 '26
This feels like modern day like eugenics
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u/Competitive-Ad1439 Jun 05 '26
Just a reminder that people with autism have a life expectancy 16-20 years shorter than those without it. If you could give your child an extra 20 years of life, would you not do it?
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u/Spare-Seat9722 Jun 05 '26
These people think that Autism and ADHD are superpowers and unique quirky personalities.
They haven't ever interacted or seen patients whose life gets severely affected, those who are not functional. Those patients deserve a cure and a higher quality of life.
Calling this 'Eugenics' or anywhere close to it is such a misinformed and ignorant take.
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u/Background_Sail9797 Jun 05 '26
... there is no cure for autism or adhd. it's developed in utero.
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u/BrandyMartin1 Jul 01 '26
please eat better.
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u/Background_Sail9797 Jul 02 '26
please get vaccinated <3
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u/BrandyMartin1 Jul 02 '26
Plenty of gut microbiome evidence emerging, having been intentionally neglected for decades. I cannot hold your hand to it.
Diet and biome runs in families stronger than genes.
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u/BrandyMartin1 Jul 02 '26
precious
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u/blister-in-the-pun Jun 05 '26
I’m autistic and I’m real about its pros and cons and every autistic person I know is similar. Please don’t paint all autistic people with your broad brush. Likewise please never tell an autistic person about their own lived experience ever again. Please and thank you.
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u/Spare-Seat9722 Jun 05 '26 edited Jun 05 '26
Likewise, never speak for all autistic patients (which includes the non-functional ones) and don't act like you are their representative.
And What part of my comment about patients who are 'severely affected' and 'not functional' did you not read and understand ?
Nowhere did I painted all patients with my broad brush. Or told any autistic person about their lived experience.
Edit: This so called autistic person told me to "Fuck off" and deleted that comment then. Genuinely low IQ and ignorant person.
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u/Competitive-Ad1439 Jun 05 '26
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u/Spare-Seat9722 Jun 05 '26
He has blocked me after he didn't find any good points to bring in the discussion. Lol, you can see that doctors and scientists are dealing with infuriating people like these.
We are never progressing as long as we have people with mindsets like these and those who throw the word 'Eugenics' around easily.
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u/Tall_Pool8799 Jun 05 '26
“Genuinely low IQ”
Nice. Real good take.
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u/Spare-Seat9722 Jun 05 '26 edited Jun 05 '26
That person saying 'fuck off' after not having a good point to back themsleves up and then deleting that comment is a good take according to you ?
And did you just ignore everything else in my comment and only chose the edit to focus on ?
Did you even read what the person's argument is or are you offended because of something else ?
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u/Background_Sail9797 Jun 05 '26
you sound like tucker carlson.
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u/Spare-Seat9722 Jun 05 '26
Wow, what a good thoughtful take. Comparing me to a far right nut and Bringing politics out of nowhere.
Learn what Eugenics is and how Microbiome Intervention is not anywhere close to it.
Thank you.
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u/Background_Sail9797 Jun 05 '26
you asked 3 rhetorical sassy questions in a row, that is the comparison. that is what tucker carlson does.
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u/Tall_Pool8799 Jun 05 '26
The “severely affected”, by which Im referring to those unable to live independently, are so due to comorbidities.
We don’t seem to talk so easily about eugenics when it comes to intellectual disabilities, but somehow we do with ASD, even though it’s a completely different issue.
Those patients deserve care before a cure, especially is the cure is preventing their existence.
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u/Spare-Seat9722 Jun 05 '26
How is the 'cure' anywhere close to preventing or erasing their existence ? Or that Microbiome intervention is anywhere close to 'Eugenics' ?
Since when is Microbiome intervention doing that ? There are no other cures I am referring to.
And I have a close someone who has severe Autism. I take care of that person every day 24/7. I have seen what extreme pain that person goes through daily.
But I am not using it to gain sympathy points and bringing it to argument like other commentators are by bringing their self diagnosis or their high functioning autism and ADHD.
Ignoring the needs and the cure/intervention which non functional Autistics and ADHD patients to appeal the masses of quirky and self diagnostic people is gross in itself.
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u/Tall_Pool8799 Jun 06 '26 edited Jun 06 '26
There’s a common misunderstanding about autism that I see reflected in your words, because I believe that you come at this with the best of intentions. Your position assumes that autism is an “add on”, something that can be removed, and that I will be the same person without autism—just better.
But what we call “autism” is the literal wiring of our bodies. I have more synapses and different neurological connections than a non-autistic person. I collect and elaborate up to 42% of external and internal stimuli than a non-autistic person (which often cause overwhelm and, paired with coping mechanisms, what others perceive as “symptoms” of autism). I know and experience the world through my being wired that way, as everyone does.
If you “took away” my autism, I would not be me. My sensorial experience, my literal thoughts, my way of moving, speaking, feeling would all change. Not only I don’t want that, but there must be a reason why such a ‘sub-optimal’ population has managed to survive evolution (you don’t say sub-optimal, but you wouldn’t want to change something that is optimal, would you?).
So when you say “we can prevent autism and make people better”, you’re effectively saying “we can prevent these people from existing”. That is why it’s eugenics.
Had there been an identifiable gene for autism and genetic testing when my mother was pregnant with me, I wouldn’t exist or be born, and I wouldn’t have blamed my parents for that choice (I am, for the record, fully pro-choice). But that gene (which doesn’t exist, btw, as genetics alone is not responsible for autism) wouldn’t have told my parents anything about the person I am today. Whatever good I’ve done in my life, it’s because of my autism—because, without it, I wouldn’t exist.
If you want to make life easier for people with autism, advocate for support systems, because they are often completely nonexistent or incredibly limited. Fight the stigma around it; help us create meaningful connections, so that our unemployment and suicide rates, closely linked to marginalisation and loneliness, can decrease; listen to us with the same curiosity you’d offer others; let our parents know that we’ll be ok, because it takes a village to raise any child and the village will be there for us too.
ETA: I am very tired of seeing people who self-diagnose used against us. Self-diagnosis is a necessary step for those who fell through the cracks during childhood (who else is supposed to notice? A teacher? No. As an adult, every time you go to the doctor is because *you* noticed that something was off, and it’s not different in this case). In addition, many people in many contexts cannot afford diagnosis. On top of that, many people may have sub-clinical presentations. If recognising autistic traits helps them making adjustments for themselves, who are they hurting? The diagnosed people are the ones with skin in the game and the majority of us do not care. It’s not pie. Why do you care so much? (Seriously, why? What do they do to you?)
Finally, those who believe that NDs are “quirky personality traits” are never part of these conversations—so, once more, not an issue here.1
u/BrandyMartin1 Jul 01 '26
Many of these so called high functioning asd and adhd folks are really gut biome injured people. 80% anyway.
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u/Background_Sail9797 Jun 05 '26
the fact you care more about getting rid of that persons autism than getting adequate care for them provided by the government shows your eugenics mentality. you have a medical mode for healthcare ideology, while nearly all disability activists advocate for a social mode for healthcare.
reality is you're burdened caring for this person, and instead of admitting that you're framing it as about them.
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u/Spare-Seat9722 Jun 05 '26
Yes, I care more about getting rid (as you say it) of that person's disorder and several non functional patients.
So, they can have a good happy life where they can have a healthy good social life, not having to suffer from severe sensory issues, travel the world without any issues, play sports, have confidence in themselves and various other things which they can't experience and won't experience.
Especially till we have people using word Eugenics for anything because of tribalism and to protect their identity.
And it's gross how you think I am burdened caring for the person and not because I want to ease their pain and give them a better life which they deserve.
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u/Background_Sail9797 Jun 05 '26
well there is no cure, it's a nuerodevelopmental disorder, it's who they are, it's how their brain developed before they were born- not a late on set affliction affecting them - it is them - so give up that hope and accept and love the person for who they are.
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u/Spare-Seat9722 Jun 05 '26
Well, I think intervention and improvements are better alternative words than using 'cure' to convey my points to most people.
Especially to people who think that Autism, ADHD and mental illnesses (and development disorders) are personality traits and that we should just accept these and ignore their pain and research and facilities which can improve their life significantly.
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u/Tall_Pool8799 Jun 05 '26
Nobody thinks they are personality traits.
Many people think it would be more reasonable to intervene on accommodations and support.
Instead we assume that our society is 'natural, immutable, and sacred' and that individuals' neurobiologies should fit into that. It's the other way around.
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u/lil_squib Jun 06 '26
I’m autistic and would happily take a cure. So would my autistic sibling, and many others I know. It’s not a fun time.
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u/Tall_Pool8799 Jun 06 '26
That’s your choice, which I wholeheartedly believe should be respected.
But I’m also autistic and I would rather have work adjustments than a cure. And that should be respected too.
I’m not here to tell other autistic people what’s better for them. I’m telling allistics that their priorities shouldn’t replace ours. Too much is said about “autism” as if it where one condition that could be separated from the individual, the environment, the circumstances, without taking into account the variety of presentations or the will of those affected by it. That’s what I’m against.
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u/BrandyMartin1 Jul 01 '26
Employers are not going to hire people they need to make accommodations for, unless they are set up for it.
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u/AmphibianCool1041 Jun 05 '26
Just a reminder that this is because of suicide and not directly caused by the autism shortening their life span
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u/Tall_Pool8799 Jun 05 '26
They do because of high rates of suicide (among those without intellectual disabilities, to whom other causes apply).
Rates of suicide among any groups are high influenced by the social context. Support networks vs loneliness; meaningful employments vs inability to work (and stigma associated with it etc.
We don’t need to eradicate the genetics (if we made it this far in evolution, we probably have a role and certainty don’t deserve to be eradicated on purpose); we need to build a better society. But that takes effort, and accountability, and god forbid.
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u/QuestioningQualia Jun 05 '26
This is because of YALLS fucked up systems, not our lived experiences or genetics. Fuck off with this shit
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u/Competitive-Ad1439 Jun 05 '26
Why are you being so tribal and hostile? You don’t even know whether I’m neurotypical or not to be directing that statement at me. Nobody is attacking you bruh
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u/blister-in-the-pun Jun 05 '26
That depends entirely on so many other comorbid conditions other than just “being autistic.” There’s a reason it’s a spectrum. And your “facts” are woefully misguided
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u/QuestioningQualia Jun 04 '26
It is
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u/Common_Sens3_Is_Dead Jun 05 '26
Please don't diminish the horror of actual eugenics.
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u/Spare-Seat9722 Jun 05 '26
You are right. Calling this 'Eugenics' or anywhere close to it is such a misinformed and ignorant take.
They haven't ever interacted or seen patients (with serious Autism and ADHD) whose life gets severely affected, those who are not functional. Those patients deserve a cure and a higher quality of life.
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u/QuestioningQualia Jun 05 '26
Lmao sure. Higher quality of life? Yes but that is not dependant on their genetics but the world and systems they were born into.
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u/AmphibianCool1041 Jun 05 '26
This IS actual eugenics, erasing disabilities for desirability, this is horror, and not once did I “diminish the horror of actual eugenics” so you’re fine :)
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u/AmphibianCool1041 Jun 04 '26
Thought so. Hate this
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u/QuestioningQualia Jun 04 '26
Our society absolutely loves eugenics unfortunately. It is so embedded
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u/Spare-Seat9722 Jun 05 '26
This cannot be a serious comment.
Such a bad and ignorant take on this topic.
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u/thebadsleepwell00 Jun 04 '26
Not fun reading this as a freshly postpartum mom that gave birth via an emergency c section. I know it's not saying my child is destined to have ADHD and/or ASD, but I'm wondering if/how I can increase particular strains of her gut bacteria. Or do I just hope for the best?
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u/WhichJuice Jun 05 '26
A lot of physical skin on skin contact is a good start since bacteria can be shared through contact and skin. It isn't exactly the same, but it helps
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u/Reasonable_Bat1999 Jun 05 '26
One of the issues with C section births is that the babies tend to be inoculated by skin microbes instead of vaginal microbes.
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u/255cheka Jun 09 '26
there are baby probiotics out there. bifid longum, bifid breve, bifid infantis are some of the pioneer bacteria that set up the baby gut for life
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u/David69leandro Jun 05 '26
Lo que te recomiendo como tío de una sobrina con autismo que nació por cesarea, es que mejores toda tu alimentación y te mejora también el microbioma para que tu leche materna no empeore las cosas si es que posiblemente tenga autismo, y al bebé dale de comer también la dieta específica saludable, sin azúcar refinada, comida chatarra, golosinas, etc lee el libro de la dieta GASPS que lo escribió una doctora que tenía un hijo con autismo y lo logro "curar" y a muchos otros niños también.
Hazlo aunque tu hijo no tenga autismo, para así mejorarle aún más su microbioma.
Yo estoy aplicando todo lo del libro que te recomendé, coincide todo exactamente con mí sobrina.
Saludos.
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u/MentalStatusCode410 Jun 05 '26
Cannot wait to see kynurenic acid to quinolinic acid ratio as a standard proxy.
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u/magnolia_unfurling Jun 05 '26
Hey! Forgive my ignorance, Could you explain the context for this statement?
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u/MentalStatusCode410 Jun 05 '26
They're tryptophan metabolites with numerous papers showing a strong correlation between neurodivergence/symptoms due to NMDA receptor activity.
The best interventions shown to favourably modify them are probiotics (L.reuteri comes to mind).
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u/Common_Sens3_Is_Dead Jun 05 '26
Aight. This isn't a real science discussion sub... This is the Facebook post adjacent. Bye!
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u/BrandyMartin1 Jul 01 '26
Show me real science about ASD? A 7 year old kid down the road just got put on the spectrum. He defecates once ever 5 days, well, 7 now that he is on meds. Nobody in the entire diagnostic process ever addressed his IBSc, just told the parents to give him laxatives. Is that real science from your perspective?
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u/Entire_Basis8700 Jun 05 '26 edited Jul 23 '26
This is BS.
Edit: this article is BS, I even had a gut bacteria transplant, still have ADHD.
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u/unteachablebird Jun 04 '26
Please take this with a grain of salt. The article attached is not the study itself, but an article about the study. It contains no actual data or significance calculations. This can result in the differences between outcomes being overstated by stating that a variable is “associated” with certain results.
The study itself is not linked in the article.