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Arabian_Ivy
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05 Jan 2026, 12:34 am

Are gut issues common in people on the spectrum? Indigestion, constipation, malabsorption, bloating, etc.

I've had gut issues my whole life. I experimented with supplements, herbs, and foods, including B1, ghee, hydration, fiber, castor oil, and magnesium oxide (500–1,000 mg). The only thing that alleviated my symptoms was vitamin D; no more bloating or indigestion, and less constipation.
I'm not 100% better, but I feel relaxed and can finally focus and sit still for hours if needed.

I read that people on the spectrum can't absorb vitamin B9 properly, and leucovorin (a form of B9) can help those who can't.



Tamaya
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05 Jan 2026, 7:43 am

Autism has no physical issues, otherwise it would be much easier and quicker to diagnose.

I don't have gut issues. Most NTs I know often complain of indigestion and heartburn and gas, but I don't get all that. I can eat very late at night and not have any affects in the night.

I do get constipated though, but it doesn't cause any issues for me. It might be because I don't really have a routine, so my digestive system doesn't either. Also my mother got constipation too and she was NT.


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ASPartOfMe
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05 Jan 2026, 7:57 am

Autistic children more prone to stomach issues, study finds

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Children with autism are far more likely to experience chronic digestive issues compared to their peers, a study has found.

Researchers at the University of California monitored children’s development for more than a decade and found that gastrointestinal symptoms in autistic children were more frequent, intense, and long-lasting.

The study, published in the journal Autism saw that autistic children were more at risk across every stage of development, and symptoms were more likely to persist across childhood, instead of resolving themselves.

Bibiana Restrepo, the lead author of the study, said: “The connection between autism and gut symptoms has not been fully understood. Parents often sense that their child is having digestive issues, but can’t tell what is causing them.

“Our research shows that these symptoms are common, persistent, and can affect many areas of a child’s daily life. By identifying and treating them, we may be able to improve both physical comfort and developmental outcomes.”

The study tracked 475 children, including 322 children with autism. Researchers followed their progress from the ages of 2 to 12-years-old, conducting evaluations and interviews with their families over that time. Both the frequency and persistence of gastrointestinal symptoms were recorded.

The researchers evaluated nine typical gastrointestinal symptoms, including constipation, diarrhoea, abdominal pain and bloating.

Autistic children were more likely to develop each symptom, with constipation being the most common, affecting around 32 per cent of autistic children, compared to 11 per cent of those without autism. Researchers said their findings validated what has long been observed by parents.

Previous research has suggested that dietary preferences lacking in nutrients and food selectivity, which is common in autistic children, may play a role in the increased risk of stomach problems.

Professor Christine Wu Nordahl, an author of the study, said: “When children are experiencing stomach pain or other gastrointestinal problems, it doesn’t just affect digestion. It can influence sleep, mood, and how they interact with the world around them.”


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Last edited by ASPartOfMe on 05 Jan 2026, 8:01 am, edited 1 time in total.

Tamaya
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05 Jan 2026, 7:58 am

Caused by stress and anxiety maybe, not a direct cause from autism itself.


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ASPartOfMe
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05 Jan 2026, 8:14 am

Tamaya wrote:
Caused by stress and anxiety maybe, not a direct cause from autism itself.

Stress and anxiety are my theories. Being autistic in an NT world is stressful. Hyperfocus may cause perfectionism and irregular eating habits and relieving oneself too infrequently. Sensory issues is another cause of poor eating habits, hyposensitivity may literally cause delays in feeling the need to relieve oneself.


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Fishyfisherton
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05 Jan 2026, 8:41 am

Stomach problems are a common comorbid likely because we're prone to anxiety. I have IBS myself and I get indigestion and that sort of thing quite alot despite having a good diet. I think I get stressed out easily and it makes me s**t weird.


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Arabian_Ivy
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05 Jan 2026, 8:59 pm

Is stress the cause of gut issues, or are gut issues the cause of stress, or is it a vicious cycle?

I've been searching for decades for a solution to my gut issues, and I had no idea vitamin D was what I needed. There might be other deficiencies, but so far it's been two months without gut issues, which means it's not a placebo effect. I tested doses from 500 IU to 5,000 IU a day, and all of them reduced both gut issues and stress.



nick007
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08 Jan 2026, 10:42 pm

ASPartOfMe wrote:
Tamaya wrote:
Caused by stress and anxiety maybe, not a direct cause from autism itself.

Stress and anxiety are my theories. Being autistic in an NT world is stressful. Hyperfocus may cause perfectionism and irregular eating habits and relieving oneself too infrequently. Sensory issues is another cause of poor eating habits, hyposensitivity may literally cause delays in feeling the need to relieve oneself.
I think those can be major factors for some. I'll add that a bit of autistics tend to be on various psych meds to treat anxiety, depression, ADHD, & meltdowns. Gastrointestinal issues are common side-effects of psych meds & meds in general.


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09 Jan 2026, 2:01 am

Okay not best ..for recommending but a product called multidophilus by Solaray company 24 covers most all the gut bacteria needed in the colon. once every other day then after a week down to once a week. then see if you are better
long term experience with plain goatmilk Kefir add stevia if needed. Then a product called Natto can help give relief.
Worse case for me was to use Comfrey tea once a day for about a week, then, 2x aweek depending on how you feel .
in addition incase of possible ulcer situation.. in addition to above ,took me along time to test each of these.
Careful of ant acids .. can cause there own issues . If you just have have coffee please add teaspoon of baking soda to it before drinking it. best wishes . these worked for me.


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09 Jan 2026, 2:04 am

My gut issues were mostly psychosomatic or consistently hormonal.

I had accidentally solved the former.
The latter is still a mystery.

There are changes in reactions throughout the years, but my diet practically never changed.


The most I'd do for alleviating further gut issues is either timing, amount, and certain types of food that reacts to my gut.

Like for example; turns out I'm somehow lactose intolerant and I just happened to be addicted to chocolates.
Or that, even if my gut doesn't like milk or worsens gut related issues, my body somewhat needed it in certain hormonal phases to alleviate symptoms outside gut related issues.


Supplements and medications also couldn't seem to work out and only take it on and off, nothing was effective for me save for a very few that's usually nothing to do with solving gut issues.


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Arabian_Ivy
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09 Jan 2026, 2:14 am

According to The End of Mental Illness by Dr. Amen, certain deficiencies (such as B1, B6, B9, B12, and D) are common in people who experience mental health issues.



Arabian_Ivy
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09 Jan 2026, 2:19 am

Edna3362 wrote:
My gut issues were mostly psychosomatic or consistently hormonal.

I had accidentally solved the former.
The latter is still a mystery.


There are many factors that can cause hormonal imbalances, including things we’re aware of, like plastics, and things we may not be aware of, like perfumes and the essential oil lavender. There are books written on this subject.



Jakki
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09 Jan 2026, 2:19 am

Another issue I ran into was being Gluten intolerant and sometimes lactose issues. Steamed veggies also helped me.btw


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Arabian_Ivy
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09 Jan 2026, 2:35 am

Jakki wrote:
Okay not best ..for recommending but a product called multidophilus by Solaray company 24 covers most all the gut bacteria needed in the colon. once every other day then after a week down to once a week. then see if you are better
long term experience with plain goatmilk Kefir add stevia if needed. Then a product called Natto can help give relief.
Worse case for me was to use Comfrey tea once a day for about a week, then, 2x aweek depending on how you feel .
in addition incase of possible ulcer situation.. in addition to above ,took me along time to test each of these.
Careful of ant acids .. can cause there own issues . If you just have have coffee please add teaspoon of baking soda to it before drinking it. best wishes . these worked for me.


I don’t eat many probiotic foods, just yogurt, so that might be a contributing factor.

I’ll eliminate dates for at least a week, since I read about a month ago that they can cause constipation.



Arabian_Ivy
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09 Jan 2026, 2:43 am

Jakki wrote:
Another issue I ran into was being Gluten intolerant and sometimes lactose issues. Steamed veggies also helped me.btw

Do you live in the US? Gluten-related issues are common there.
We’re not doing great here either, celiac disease rates in Saudi Arabia are among the highest.



Arabian_Ivy
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09 Jan 2026, 3:46 am

Unrelated:

I was watching the back-and-forth between Dan Bongino and Dave Smith on X, and when it was Dan’s turn, someone commented the following and it made me laugh.

Image