[HN Gopher] Social anxiety disorder-associated gut microbiota in...
       ___________________________________________________________________
        
       Social anxiety disorder-associated gut microbiota increases social
       fear
        
       Author : thunderbong
       Score  : 144 points
       Date   : 2025-06-15 16:16 UTC (6 hours ago)
        
 (HTM) web link (www.pnas.org)
 (TXT) w3m dump (www.pnas.org)
        
       | bloqs wrote:
       | this astonishes me
        
       | kneel wrote:
       | 16S sequencing doesn't reveal a mechanism, it indicates a narrow
       | genomic pattern that may or may not be relevant.
        
       | ngruhn wrote:
       | This is gonna go viral as: just eat more yogurt to stop being
       | awkward or whatever.
        
         | jadamson wrote:
         | Yoghurts probably won't help, but Fecal Microbiota
         | Transplantation might.
         | 
         | A team at the University of Calgary is currently recruiting
         | participants with Major Depressive Disorder and Obsessive-
         | Compulsive Disorder:
         | 
         | https://research.ucalgary.ca/participate/clinical-trial-eval...
         | 
         | https://research.ucalgary.ca/participate/focused-study-fmt-o...
        
           | bluefirebrand wrote:
           | Damn, that's my city and I have been struggling with some
           | other stuff
           | 
           | I don't fall under the umbrella of Major Depressive or OCD
           | but if they were doing trials to help anxiety or something I
           | would probably sign up
        
         | ninetyninenine wrote:
         | The experiment looked to be the other way around. If you
         | introduced new microbiota from patients with SAD this caused
         | SAD in mice.
         | 
         | So introducing new microbiota won't solve the problem. The
         | theory that needs to be tested is that we know microbiota can
         | switch SAD on, but does removal of said microbiota turn it off?
         | It needs to be an antibiotic cleansing. It can even be DIY.
         | People can try this on themselves. I think the unknown factor
         | here though is whether or not a persons diet is introducing the
         | SAD causing microbiota.
        
           | jvm___ wrote:
           | Do we get gut bacteria from the people around us? Where does
           | a newborn get their gut bacteria from?
        
             | ninetyninenine wrote:
             | The entry point to the gut is from the mouth so because of
             | that, I think food is where most of the gut bacteria comes
             | from.
        
               | cwmoore wrote:
               | Sure, as long as you hold your mouth and nose closed when
               | not eating.
        
               | asdff wrote:
               | You have a back door as well for the gut that tends to
               | open at least once a day. We know fecal matter is in the
               | air in most bathrooms. It wouldn't surprise me if you got
               | an infusion of community fecal biome right into your anus
               | every time you used a restroom that isn't your own.
        
               | ninetyninenine wrote:
               | Yes but usually when the back door opens things are
               | exiting the gut rather then going in. So I don't think
               | that counts.
               | 
               | There are cases where things do enter the back door but I
               | think that's just humans getting creative and it wasn't
               | designed for entry.
        
             | hackernewds wrote:
             | we can from kissing
        
             | evanjrowley wrote:
             | It's not just food as many commenters are pointing out. It
             | could be from what people are drinking, even water, if oral
             | delivery is not sanitized.
        
               | cwmoore wrote:
               | So if the choice is between unsanitary water or sterile
               | and containing chlorine, etc., which has the effect of
               | strengthening the microbiota so that the resulting
               | population increases perceived wellness in the host
               | organism's sociopolitical fitness, its simple enough, we
               | all stop eating and drinking for ultimate safety and
               | maximum paperclips.
        
             | amanaplanacanal wrote:
             | Newborns get a lot from their mother. They have very little
             | stomach acid, so whatever they are getting goes straight
             | through to their gut.
        
           | im3w1l wrote:
           | Introducing new microbiota will put competitive pressure on
           | the old one, so I wouldn't write it off with out trying.
        
         | mproud wrote:
         | Lotta yogurts people buy are chock full of added sugars.
        
         | grafmax wrote:
         | Eating more prebiotics in the form of unprocessed plants is
         | much more effective at improving gut health than probiotic
         | supplements or even probiotic foods. (Of course you can do
         | both.)
        
       | chkaloon wrote:
       | Can we just keep taking courses of scorched earth antibiotics
       | until we come up with a microbiome combo that feels good?
        
         | orionsbelt wrote:
         | Anecdotally, that generally seems to make things worse, not
         | better.
        
         | SketchySeaBeast wrote:
         | Where does having solid stool sit in comparison to not having
         | social anxiety?
        
         | bhaney wrote:
         | I did this years ago and it seemed to work, but n=1. It took
         | two cycles of antibiotics and intentional introduction of "good
         | bacteria" before I landed on something that seemed to fix most
         | of my food intolerances. Didn't seem to have any impact on
         | anxiety.
         | 
         | I learned later that this is pretty dangerous to attempt, since
         | you're very likely to give yourself c diff or some other
         | infection and end up with persistent IBS before you land on a
         | good microbiome.
        
         | Der_Einzige wrote:
         | Given that it'll cure the latent chlamydia and gonorrhea that
         | people have - not to mention the cat toxiplasmos - lets do it!
        
       | ninetyninenine wrote:
       | They caused SAD in mice by introducing specific microbiota.
       | 
       | But does the system have hysteresis? Can the flip be switched the
       | other way? Introduce antibiotics to wipe out all the microbiota
       | and does the SAD improve?
       | 
       | There can be human trials for this given that antibiotics are
       | approved low risk medicines. Clinical trials with antibiotics to
       | clean out and reset the microbiome along with strict diets in
       | attempt to prevent reintroduction of said microbiota.
       | 
       | It can even be DIY.
        
       | jjk166 wrote:
       | I think it makes sense that our microbiome should be able to
       | trigger such a response. If your microbiome is changing, it means
       | that some microbe is gaining numbers it didn't previously have,
       | and your current bodily functions, such as your immune system,
       | aren't stopping it. That doesn't necessarily mean your immune
       | system is compromised, but if it is then it would probably be
       | good not to spend a lot of time around other individuals,
       | especially large groups or strangers. Other reasons for your
       | microbiome to be shifting, like a sudden change in diet or
       | enviroment, could also be indicative of an issue like food
       | shortages or territorial change where it would also be good to
       | minimize your exposure to and reliance on others. Finally,
       | depending on what exactly is gaining a foothold, you could
       | potentially be a threat to your kin if you come around them.
       | Developing a social fear response to certain changes in gut
       | microbiome could thus be quite beneficial for most social
       | creatures.
        
         | amelius wrote:
         | Beneficial for the group, not the individual, I suppose.
        
           | MarkusQ wrote:
           | Which is to say, maladaptive. Despite all the people wishing
           | evolution worked at the group level, it doesn't. Groups don't
           | have offspring, individuals do, and thus things that are bad
           | for the individual are extinguished regardless of their
           | effect on the group.
           | 
           | If you look closely enough, even individuals aren't the true
           | units of evolution, for the same reason; competing alleles is
           | where the real action is.
        
             | energy123 wrote:
             | Alleles are shared with kin which gives rise to multilevel
             | selection effects in rare but real scenarios.
        
             | saltcured wrote:
             | When thinking about evolutionary forces, you cannot
             | conflate "positive" outcome with survival and reproduction.
             | An individual might survive and produce offspring via
             | effects that make the individual unhappy in their own life
             | and/or with shortened life.
             | 
             | It's only when an effect causes death or infertility prior
             | to normal reproductive phases that we can really say it has
             | a direct evolutionary pressure. Anything that happens later
             | is always going to be through secondary, social effects on
             | how their condition supports or hinders their offspring
             | from reproducing further generations.
        
             | MarkusQ wrote:
             | Voting me down doesn't change the fact that group selection
             | is a myth. A myth that some people are fervently attached
             | to, but a myth nonetheless. Groups simply don't reproduce
             | at a rate or fidelity to allow evolution at the group level
             | over the time scales in question.
             | 
             | E pur si muove.
        
         | theptip wrote:
         | The problem with Evolutionary Psychology is that it's easy to
         | construct this sort of "just so" story for pretty much any
         | causal link, and they are not falsifiable.
         | 
         | IMO the simpler hypothesis here is that this isn't anything
         | adaptive, it's just another example of how biology is like
         | spaghetti code; changing one chemical signal will affect an
         | essentially random set of downstream systems, some of which can
         | be causally connected to psychology/behavior.
        
           | troll_v_bridge wrote:
           | Which would still be natural selection though.
        
           | asdff wrote:
           | That isn't a problem because no one speaks of these
           | suppositions in terms of "just so" but in terms of "could be
           | due to." If you want to prove something as just so you have
           | to do a lot more work describing a mechanism of action and
           | that involves reaching into a different toolbox.
        
           | h2zizzle wrote:
           | Could also be like climate change, where it correctly
           | describes a broad phenomenon, but cannot be used to identify
           | or classify any individual event. E.g., Wildfires are
           | probably getting worse because of climate change, but it's
           | difficult to say if the Pacific Palisades fire would not have
           | happened in a cooler global climate.
           | 
           | So, is microbiome-mediated social anxiety selected for as an
           | advantageous trait for societies subject to communicable
           | diseases and the travails of nomadism? Maybe. Did YOUR
           | microbiome-mediated social anxiety arise because it was
           | advantageous for your community? Probably impossible to say.
           | 
           | Also, a hole in GP's logic: you would expect protective
           | social anxiety to arise in people whose situation hasn't much
           | changed except that they've encountered people whose has (as
           | with sedentary villagers encountering nomads who may or may
           | not be about to ransack their settlement).
        
             | softsound wrote:
             | Wildfires are worse in areas where the wrong type of trees
             | were planted as well which is common in logging areas or
             | places cheaply "reforested" that don't do much research on
             | what should be growing there. Wildfires themselves aren't
             | bad per say either as certain trees only grow from fires.
             | Not to say that climate change isn't a factor though, but
             | there are a lot of varibles too.
        
         | veunes wrote:
         | Makes me wonder how many other "maladaptive" responses today
         | actually had adaptive roots in a different context
        
       | cyberge99 wrote:
       | Makes sense. People naturally want to poop someplace comfortable
       | because pooping is a very vulnerable position for a human.
        
       | pogue wrote:
       | I've seen probiotic supplements that have strains that claim to
       | help with anxiety and depression, but I've never really looked
       | into them because I'm quite skeptical they do anything. But if
       | anyone is familiar with them and has any feedback I'd be
       | interested to hear it.
        
         | kenjackson wrote:
         | Strongly second this ask.
        
           | cwmoore wrote:
           | So long as it isn't eating the variety of fresh fruits and
           | vegetables that produce gut serotonin in the microbial
           | breakdown of complex carbohydrates and fiber, right?
        
             | vorpalhex wrote:
             | Eating fresh fruits and veggies is a great general health
             | advice but unlikely to shift your gut microbiome
             | meaningfully (unless you are eating some specific fruits or
             | fruit skins in specific conditions).
             | 
             | And randomly eating healthy stuff is probably not going to
             | shift your biome in a particular direction nor eliminate
             | the cause of biome issues.
             | 
             | I eat healthy including a lot of whole fruit, nuts, dried
             | fruits, dark green veggies and grass finished meats and
             | there are still times I have my biome be a bit off.
        
               | cwmoore wrote:
               | "Unlikely", "randomly", and "probably" had me nervous
               | about your contribution to this discussion.
               | 
               | I do appreciate the quantitative precision at the end of
               | your last sentence.
        
             | kenjackson wrote:
             | Why wouldn't it be? Do you know which ones exhibit the
             | desired characteristic?
        
               | cwmoore wrote:
               | The ones that aren't food shaped name brand products or
               | fruit colored sugar water.
        
         | bhaney wrote:
         | Whether or not the effect in the paper turns out to be true and
         | reproducible, the supplements you've seen almost certainly
         | don't do anything unless you're wiping out your established gut
         | microbiota with antibiotics first. Your existing microbiota are
         | entrenched and in a very good position to defend themselves
         | from any weakened intruders you might intentionally introduce.
         | Meanwhile, supplement companies really like to make exaggerated
         | claims.
        
           | pogue wrote:
           | I posted some links to papers I came across here:
           | https://news.ycombinator.com/item?id=44284165
           | 
           | It's a very fair and valid question as to whether a probiotic
           | supplement:
           | 
           | A) Survives being packaged and stored in a warehouse for an
           | indeterminate amount of time B) Being shipped in the back of
           | a truck/airplane C) If the bacteria is still alive whether it
           | can make it through the GI tract to even have any effect
           | whatsoever
           | 
           | I don't know whether this has been studied. I know Consumer
           | Labs does yearly tests on various supplements, probiotics
           | included, but it's a subscription service and you need to
           | subscribe to see the results. I have subscribed to them in
           | the past and found their testing and articles quite helpful.
           | I
           | 
           |  _In their tests, ConsumerLab found that the number of viable
           | cells in probiotic products ranged from 1 million to 225
           | billion per recommended serving._
           | 
           |  _Additionally, some products were contaminated with harmful
           | bacteria, such as Pseudomonas aeruginosa, which poses a risk
           | to immunocompromised individuals and infants._
           | 
           |  _The company also noted that the enteric coating of some
           | products did not function properly, potentially affecting the
           | delivery of the probiotics to the gut._ (Brave AI Search
           | summary of the article below) [1]
           | 
           |  _ConsumerLab Tests Reveal Best Probiotic Supplements and
           | Those With Quality Issues_
           | https://www.consumerlab.com/news/best-probiotic-
           | supplements/...
        
         | kilroy123 wrote:
         | I've had a LOT of gut problems in my life. I have a physically
         | broken stomach, have had to have stomach surgery in the past,
         | and probably will have to do it again soon.
         | 
         | Most probiotics I've taken did nothing. The only ones that seem
         | to actually work for me are these:
         | https://drohhiraprobiotics.com/
         | 
         | Not sure why it works, but anecdotally, they do.
         | 
         | Other things that have helped _significantly_ - cutting out
         | alcohol.
        
           | asdff wrote:
           | I'm not sure how many probiotics will make it through the
           | stomach acid. One would think suppository would be vastly
           | more effective: parachute directly onto the battlefield.
        
           | AaronAPU wrote:
           | yeah I had serious gut problems for years and no probiotic
           | ever did the slightest thing. Anecdotally I can't
           | differentiate them from snake oil.
           | 
           | But Metamucil changed my life dramatically over a span of a
           | few weeks. Never had the type of symptoms it's indicated for,
           | which everyone I mention it to just assumes. But it fixed me
           | somehow.
        
             | pogue wrote:
             | I was recently talking about fiber & fiber supplements on
             | here in a thread about a new type of fiber that was shown
             | in a study to help with weight loss.
             | 
             |  _Acetylated cellulose suppresses mass through commensals
             | consuming carbohydrates_
             | https://news.ycombinator.com/item?id=44219171
        
           | h2zizzle wrote:
           | Fermented foods are way more helpful IME. I've even found
           | kombucha protective against mildly spoiled food.
           | 
           | I can also attest to having my first alcoholic drink in a
           | while and it screwing me up for a week.
        
             | pogue wrote:
             | I've always been skeptical of probiotic supplements in
             | general mostly because they are stored/shipped in
             | unrefrigerated environments. I believe in most cases the
             | bacteria would end up dead before you even ingested it.
             | However, some companies have developed strains that can
             | withstand some amount of heat. But you never know where
             | they've been stored/for how long/etc.
             | 
             | I remember speaking to someone who had the suggestion to
             | try fermenting food with probiotic supplements, as that
             | would be the only realistic way to know if they were still
             | alive.
             | 
             | There are vendors that do sell probiotic supplements that
             | come shipped in dry ice that people with Crohn's disease &
             | other GI ailments. I don't remember the name of the company
             | that sold them though.
             | 
             | But, I agree that yogurt or saurkraut/kimchi and other
             | fermented products would be a good way to get some gut
             | bacteria. Those would be great to use after you came off
             | antibiotics, but it wouldn't necessarily help with genital
             | mental health/anxiety (as far as I'm aware).
             | 
             | Interestingly, yeast has neurotransmitters and
             | neurotransmitter precursors in it such as tryptophan and
             | serotonin. [1]
             | 
             | Having said all that, I decided to look up the "mood
             | enhancing" probiotic strains I've seen being sold in OTC
             | supplements. The two strains I see are Lactobacillus
             | helveticus Rosell-52 and Bifidobacterium longum Rosell-175
             | (there may be others I'm unaware of). The studies are quite
             | small, unfortunately. (I didn't read all of them though)
             | [2] [3] [4] [5].
             | 
             | Finally, this is quite a unique term I haven't come across:
             | Psychobiotics!
             | 
             |  _Psychobiotics are probiotics that have the
             | characteristics of modulating central nervous system (CNS)
             | functions or reconciled actions by the gut-brain axis (GBA)
             | through neural, humoral and metabolic pathways to improve
             | gastrointestinal activity as well as anxiolytic and even
             | antidepressant abilities._ [6]
             | 
             | [1] _Melatonin and Other Tryptophan Metabolites Produced by
             | Yeasts: Implications in Cardiovascular and
             | Neurodegenerative Diseases_
             | https://pmc.ncbi.nlm.nih.gov/articles/PMC4718080/
             | 
             | [2] _Assessment of psychotropic-like properties of a
             | probiotic formulation (Lactobacillus helveticus R0052 and
             | Bifidobacterium longum R0175) in rats and human subjects_
             | https://pubmed.ncbi.nlm.nih.gov/20974015/
             | 
             | [3] _Probiotics Promising for Mild to Moderate Depression_
             | https://www.medscape.com/viewarticle/881877
             | 
             | [4] _The effect of Lactobacillus helveticus fermented milk
             | on sleep and health perception in elderly subjects_
             | https://pubmed.ncbi.nlm.nih.gov/17851460/
             | 
             | [5] _One Giant Leap from Mouse to Man: The Microbiota-Gut-
             | Brain Axis in Mood Disorders and Translational Challenges
             | Moving towards Human Clinical Trials_
             | https://pmc.ncbi.nlm.nih.gov/articles/PMC8840472/
             | 
             | [6] _Exploring the Potential of Lactobacillus helveticus
             | R0052 and Bifidobacterium longum R0175 as Promising
             | Psychobiotics Using SHIME_
             | https://pmc.ncbi.nlm.nih.gov/articles/PMC10056475/
        
         | kayamon wrote:
         | After trying a lot of things what worked for me was cutting out
         | negative food; usually gluten, lactose, fructose. Probiotics
         | never did anything for me.
        
         | Geee wrote:
         | There's this one person who claims to have found out that
         | theses probiotics need to be amplified into a megadose, and
         | subsequently they cured themselves from social anxiety. I'm not
         | sure if there are other people who have replicated, but the
         | initial report seems trustworthy. See
         | https://pdfcoffee.com/experimental-treatment-for-social-phob...
        
           | pogue wrote:
           | That's very interesting. Making your own yogurt sounds like
           | it could be easy to do and you could potentially just use OTC
           | probiotic capsules or powder.
           | 
           | I posted some studies above about two probiotic strains that
           | have specifically been studied for mood enhancement aka
           | "psychobiotics": Lactobacillus helveticus Rosell-52 and
           | Bifidobacterium longum Rosell-175.
        
       | wosined wrote:
       | Another excuse.
        
         | amanaplanacanal wrote:
         | What? Excuse for what?
        
       | vslira wrote:
       | I'm writing the following in jest, before anyone takes this
       | seriously, as I assume this kind of correlation has been
       | accounted for.
       | 
       | Maybe the causation is reversed: people who go out more are more
       | frequently infected with all kinds of bugs, from getting too
       | intimate with strangers to eating stuff that was prepared by
       | someone not too assiduous in their hand washing - a sibling reply
       | mentioning fecal microbiota transplant comes to mind
       | 
       | I know this article is about bugs that cause anxiety, but maybe
       | they just lose the competition in a gut environment with the
       | social bugs
       | 
       | People who stay at home are less infected, thus the correlation
       | with these gut specimens
        
         | pogue wrote:
         | It's an interesting theory! Maybe find some extroverts and
         | share meals with them & do some consensual saliva exchange with
         | them and pick up their healthy bacteria! :)
        
       | im3w1l wrote:
       | I kinda skimmed parts of it but a question I have is whether the
       | study was appropriately blinded. ctrl-f blind didn't give any
       | results. One of my biggest concerns with gut flora research is
       | wishful thinking.
        
       | skrebbel wrote:
       | Offtopic but can we please stop and appreciate the excellent
       | acronym "SAD"? It's gotta be right up there with
       | hippopotomonstrosesquippedaliophobia in the gallery of best
       | disease names.
        
         | amanaplanacanal wrote:
         | It also stands for Standard American Diet. So there you go.
        
           | FranklinMaillot wrote:
           | It also stands for Seasonal Affective Disorder which is
           | winter depression.
        
       | NotGMan wrote:
       | This is well known in low carb and juice fasting communities:
       | many people completely healed life long depression after an
       | extreme dietary change.
        
       | Tarsul wrote:
       | I know from personal experience that eating sugar does induce
       | more anxiety in me. This might sound weird but I can "physically
       | feel" in my head a certain anxiety when e.g. I think about
       | something awkward. This "physical feel" stopped being there when
       | I stopped eating sweets for a few weeks. One reason why I try to
       | keep my sugar intake down (the other being in danger of getting
       | diabetes...).
       | 
       | Thus, I wholly believe this study.
        
         | veunes wrote:
         | It's wild how much your gut can mess with your brain chemistry
        
         | frankish wrote:
         | Can you explain your jump from gut microbiota to sugar? Aside
         | from sugar being one food that passes through our digestion,
         | I'm not certain why you have singled it out.
        
           | kelipso wrote:
           | Just from basic principles, what you eat affects your gut
           | microbiome because different bacteria reproduce more or less
           | from you eating different foods.
        
         | cjbgkagh wrote:
         | I believe most people are not notability adversely affected by
         | sugar and a small subset of the population, like myself, are
         | acutely affected. The former does not invalidate the latter.
         | Sarah Wilson of "I quit sugar" fame started off with a zero
         | sugar crusade then later ameliorated her advice in an apparent
         | effort to generalize her advice for a wider audience. I think
         | advice should be tailored by conditioning on what category a
         | person fits into. I would go further and suggest that a zero
         | sugar diet should also have zero fruit. As a ADHD sugar addict
         | I would generally substitute sugar with fruit and that
         | prevented me from finding out that even my ostensibly healthy
         | diet had too much sugar in it.
        
           | Tarsul wrote:
           | do you substitute your fruits with vegetables? Maybe I should
           | try it as well but then again my daily apple is one of my
           | highlights.
        
             | cjbgkagh wrote:
             | The most direct substitution was cheese, lactose does not
             | appear to have the same effect on me as fructose or
             | sucrose.
             | 
             | I mostly eat kale for vegetables, this also helps with
             | subclinical insulin resistance and inflammation. I think
             | roasting vegetables may end up being too sweet.
             | 
             | I did an extended 5 day water fast to kick start the
             | microbiome changes I undertook it as an experiment and the
             | effectiveness in lifting brain fog suggested that it likely
             | had a microbiome component.
        
               | xdavidliu wrote:
               | i thought most cheese has way less lactose, if any, than
               | milk?
        
               | edwcross wrote:
               | Would you mind citing which kind of cheese you eat?
               | Because much cheese has little to no lactose, and also
               | goat lactose does not necessarily have the same effect as
               | cow lactose. Finally, the fats and proteins in cheese
               | affect digestion and possibly sugar absorption.
        
               | cjbgkagh wrote:
               | Honestly when battling sugar cravings it would be rather
               | large chunks of parmesan cheese because I find it rather
               | sweet. I assumed that was due to lactose but perhaps I'm
               | wrong about that. It could also be that even a small
               | amount of lactose tastes sweet after a while of not
               | eating sugar.
        
               | ThinkBeat wrote:
               | It is important to note that extended water fasting will
               | have adverse effects for some people. It is not
               | recommended to do it for that long.
               | 
               | "" The water fast lasts for 24-72 hours. You should not
               | water fast for longer than this without medical
               | supervision because of health risks. ""
               | https://www.healthline.com/nutrition/water-fasting
        
         | reliablereason wrote:
         | You say sugar, but are you referring to glucose or fructose?
         | 
         | There is a meaningful amount of scientific literature
         | connecting fructose and inflammation.
         | 
         | The AVERAGE human can only digest about 30g of fructose a day.
         | Some substantially more, some substantially less.
         | 
         | A can of soda or three apples is about 30g of fructose.
         | 
         | Inflammation (high- and low grade)then being a second step
         | linking to anxiety.
        
           | Tarsul wrote:
           | I am talking about the sugar in sweets. My daily apple does
           | not appear to heighten my anxiety.
        
             | reliablereason wrote:
             | I have heard people say that eating fibers together with
             | fructose(like when eating a apple) reduces the impact of
             | fructose, as fibers create a lining on the gut wall
             | reducing the absorption rate.
             | 
             | Sounds reasonable. But i have had a hard time finding
             | evidence verifying that hypotesis.
        
               | xdavidliu wrote:
               | i'm pretty sure this saying is well agreed upon by the
               | mainstream medical community. (not a medical pro myself,
               | but follow a lot of articles and podcasts from mainstream
               | sources)
        
           | snovv_crash wrote:
           | Athletes consume 50g of fructose (and 50g of glucose) per
           | hour. It's actually fairly easy to train yourself to this
           | level.
        
         | iknowstuff wrote:
         | Heads up, I don't think there's a link between eating sugar and
         | risk of developing diabetes. Obesity is a risk factor but not
         | sugar itself.
        
           | Tarsul wrote:
           | Maybe. But eating sweets makes me eat more anyway. Which
           | leads to me gaining weight. So it's the same anyhow.
        
           | strken wrote:
           | https://www.sciencedirect.com/science/article/pii/S216183132.
           | ..
           | 
           | There's a complicated relationship, according to this meta-
           | analysis. Eating sugar in isolation from other sources of
           | nutrition is a risk factor. Eating fruit, or eating sweetened
           | foods with redeeming qualities like yoghurt and wholegrain
           | cereal, is probably inversely correlated (with lower
           | confidence). These seem to be true even when controlling for
           | BMI.
           | 
           | Looking at the meta-analysis, it's hard to say there's no
           | link. The authors suggest that fibre might mitigate the
           | impact, and that adding sugar to otherwise healthy foods
           | might encourage higher consumption of them.
        
         | iaaan wrote:
         | I recently started consuming relatively large amounts of fiber
         | (standard daily dose of whole psyllium husks mixed with water)
         | and I feel noticeably less anxious than on days when I don't
         | take it. Fiber has been shown to interact somehow (I'm not
         | super familiar) with the body's insulin levels. I wonder if it
         | is related to what TFA is saying.
        
         | amelius wrote:
         | I get a similar feeling when drinking milk. Maybe I'm becoming
         | intolerant.
        
       | veunes wrote:
       | Yeah, the brain might not be the only place we should be looking
       | when it comes to mental health.
        
       | keernan wrote:
       | I've suffered with social anxiety for a very long time. Thirty
       | years ago a doctor prescribed a MAOI which immediately
       | transformed me into a social butterfly (which in hindsight was a
       | very difficult transition). This forever proved to me what the
       | doctor had told me: it is all about chemical balance in the
       | brain.
       | 
       | The problem, of course, was the danger. I could die within
       | minutes if I ate fermented food without taking the antidote I
       | always carried. Problem with that was the risk was almost the
       | same if I took the antidote if it wasn't needed.
       | 
       | I therefore only stayed on the meds for maybe 6 months (during
       | which time I went from 150lbs to 225lbs).
       | 
       | I've never found an alternative substitute. I've taken meds that
       | help lessen the anxiety, but never found anything else that
       | literally changed who I was (making me an incredibly social
       | person).
       | 
       | PS: I think it was Nardil. I wasn't having any issues with
       | depression. The doctor was specializing social anxiety and in
       | particular in the use of Nardil to help. He also told me that the
       | chemical balance in my brain indicated that, without Nardil, I
       | would almost certainly become a hermit in my 70s. I'm 72 and his
       | prognosis was spot on.
        
         | pogue wrote:
         | That's quite interesting. In my experience, I've suffered from
         | severe anxiety and depression my entire adult life. I spent
         | years working with a psychiatrist trying every SSRI on the
         | market. None of them seemed to help in the slightest, until I
         | asked to try Eldepryl (selegiline), an MAO-B. It helps greatly
         | with depression, but hasn't helped with anxiety. An MAO-B has
         | the advantage of not having any issue with tyramine (the cheese
         | effect) that you're referring to.
         | 
         | I've never heard of Nardil, but I'll have to look into it.
        
           | bluefirebrand wrote:
           | I am always cautious about offering any kind of medical
           | suggestions online. Please take this with a grain of salt:
           | 
           | I struggled with anxiety and depression, treated with anti-
           | depressants and such
           | 
           | After years of that, a doctor suggested I test for ADHD and I
           | got medicated for that after the test was positive
           | 
           | After being medicated for ADHD, I had much less anxiety and
           | basically no depression. Turns out that both Anxiety and
           | Depression are potentially comorbid with unmedicated ADHD
           | 
           | It might be worth asking about. It could be that you need
           | stimulants, not antidepressants
        
         | basisword wrote:
         | You didn't mention therapy in your comment. Was this something
         | you tried? Personally I've went from hermit > normally social
         | thanks to CBT. It's very hard work, you need to find the right
         | therapist, and you have to continually work on it but it gets
         | easier.
        
       | afro88 wrote:
       | My social anxiety sky rocketed at 19 and didn't start to settle
       | down until 23/24. I never knew exactly why, and that's always
       | troubled me a bit. A microbe population getting out of hand
       | sounds possible, as my diet and surroundings changed drastically
       | at 19. Interesting stuff.
        
         | basisword wrote:
         | >> surroundings changed drastically at 19
         | 
         | Couldn't this be the easier explanation? People at that age
         | tend to move away from home, go to college or start work - all
         | big changes, all highly social and potentially stressful
         | changes. Mental health issues leading on from this is
         | understandable and anecdotally I've saw it in several friends.
        
           | kridsdale3 wrote:
           | People who grew up in a certain SES class (of their parents)
           | also tend to take on poverty-conditions when in college (oh
           | man all I can afford this week are these cup noodles), and
           | not to mention frequent destruction of the microbiome with
           | alcohol. It's probably very disrupting. Maybe has something
           | to do with why those who have a predisposition to having a
           | psychotic break tend to have their first around 20.
        
       | ThinkBeat wrote:
       | I feel all such studies should be headlined with: In mice: blah
       | blah blah.
       | 
       | and then if the research is farther along:
       | 
       | In <other animal>: blah blah
       | 
       | and finally if ever
       | 
       | In humans: blah blah blah.
       | 
       | I keep reading storie about what happens to mice in studies but I
       | am far more interested when the research has been able to get to
       | human trials and results are coming in.
        
       | heraldgeezer wrote:
       | oh yea fore sure but I have just given up on life. I have my job
       | and apartment and I will rot here.
        
       | hggh wrote:
       | (2023)
        
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