{"id":5909,"date":"2021-02-23T17:49:23","date_gmt":"2021-02-23T22:49:23","guid":{"rendered":"https:\/\/last-drum.flywheelsites.com\/?p=5909"},"modified":"2024-04-02T00:06:20","modified_gmt":"2024-04-02T05:06:20","slug":"gastrointestinal-autism-research","status":"publish","type":"post","link":"https:\/\/autism.org\/gastrointestinal-autism-research\/","title":{"rendered":"The Role of Neurotransmitters in GI Disorders Related to Autism"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_6 1_6 fusion-one-sixth fusion-column-first\" style=\"--awb-bg-size:cover;width:16.666666666667%;width:calc(16.666666666667% - ( ( 4% + 4% ) * 0.16666666666667 ) );margin-right: 4%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-column-wrapper-legacy\"><div class=\"fusion-clearfix\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_2_3 2_3 fusion-two-third\" style=\"--awb-bg-size:cover;width:66.666666666667%;width:calc(66.666666666667% - ( ( 4% + 4% ) * 0.66666666666667 ) );margin-right: 4%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-column-wrapper-legacy\"><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:20px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-text fusion-text-1\" style=\"--awb-text-transform:none;\"><p><span style=\"font-weight: 400;\"><a href=\"#jump\">Kara Gross Margolis, MD,<\/a> explores recent studies surrounding the role of serotonin and the more extensive gut microbiome in gastrointestinal (GI) and inflammatory conditions related to autism. She presents case studies highlighting the different presentations of GI issues in individuals with autism and how those behaviors relate to the gut-brain links. Margolis outlines research on fecal transplant, multi-omics of brain-gut-microbiome disease, correlated bacterial communities, serotonin reuptake transporters (SERT), and new longitudinal pilot studies. She notes limitations and key findings for each study and discusses their impact on current and future research avenues. She concludes by recognizing ongoing serotonin drug development before the question and answer session.<\/span><\/p>\n<p><strong>Take the knowledge quiz for this presentation <a href=\"#jump\">HERE<\/a><\/strong><\/p>\n<\/div><div class=\"fusion-video fusion-youtube fusion-aligncenter\" style=\"--awb-max-width:1500px;--awb-max-height:844px;--awb-width:100%;\"><div class=\"video-shortcode\"><div class=\"fluid-width-video-wrapper\" style=\"padding-top:56.27%;\" ><iframe title=\"YouTube video player 1\" src=\"https:\/\/www.youtube.com\/embed\/8Ftg0WG1lHY?wmode=transparent&autoplay=0\" width=\"1500\" height=\"844\" allowfullscreen allow=\"autoplay; fullscreen\"><\/iframe><\/div><\/div><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-text fusion-text-2\"><h2><span style=\"font-weight: 400;\"><strong>In this presentation<\/strong><\/span><\/h2>\n<p><span style=\"font-weight: 400;\"><strong>8:35 \u2013<\/strong> Common GI issues in autism and how they present<br \/>\n<\/span><strong>11:10 \u2013<\/strong> Case studies (2): self-injurious behaviors associated with GI stress<br \/>\n<strong>16:50 \u2013<\/strong> Screening techniques for GI issues in autism<br \/>\n<strong>23:50 \u2013<\/strong> Study: Fecal transplant<br \/>\n<strong>27:40 \u2013<\/strong> Study: Distinct microbiome-neuroimmune signatures<br \/>\n<strong>29:50 \u2013<\/strong> Study: Multi-omics analysis of brain-gut-microbiome disease<br \/>\n<strong>34:35 \u2013<\/strong> Study: Longitudinal pilot study<br \/>\n<strong>37:45 \u2013<\/strong> Study: Genetic study of SERT variants in mice<br \/>\n<strong>42:18 \u2013<\/strong> SERT 5-HTP drug development<br \/>\n<strong>46:00 \u2013<\/strong> Q &amp; A session<\/p>\n<h2>Summary<\/h2>\n<p><span style=\"font-weight: 400;\">Gastrointestinal (GI) issues are up to 4 times more common in individuals with autism spectrum disorder than their neurotypical counterparts <\/span><b>(7:50) <\/b><span style=\"font-weight: 400;\">and is one of the most common comorbid ASD conditions diagnosed. Due to poor sensory localization and\/or communication difficulties, presentation of GI issues in autistic individuals may not signal abdominal pain <\/span><b>(9:10)<\/b><span style=\"font-weight: 400;\">. Presentation of GI pain in autism can vary <\/span><b>(10:08)<\/b><span style=\"font-weight: 400;\"> but is most often associated with self-injurious behavior and vocal tics or subtle unexplained behaviors (i.e. sleep disturbance, mood, tapping on chest). The presenter notes that self-injury and aggression are often seen in individuals with autism however, they are not central to an autism diagnosis. Therefore, when patients present with such behavior, screening for GI issues should be a top priority <\/span><b>(11:35)<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The gut microbiome and peripheral serotonin (serotonin in the gut) are thought to be critical modulators of the gut-brain links important in autism spectrum disorder <\/span><b>(18:30)<\/b><span style=\"font-weight: 400;\">. The gut microbiota is a huge ensemble of bacteria, fungi, and viruses \u2013 up to 100 trillion species \u2013 impacting virtually every bodily system <\/span><b>(20:55)<\/b><span style=\"font-weight: 400;\">. A small fecal transplant study <\/span><b>(23:50) <\/b><span style=\"font-weight: 400;\">showed decreased GI issues and associated behaviors during and after treatment. However, due to the incalculable differences in gut biomes, studies have shifted focus to understanding correlations of specific bacterial communities with conditions <\/span><b>(26:27)<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A slightly larger study <\/span><b>(27:40) <\/b><span style=\"font-weight: 400;\">correlated GI symptoms with bacterial communities in the gut and compared blood and rectal biopsies across populations. They found that children with autism have very different gut biomes to their neurotypical counterparts with and without GI issues <\/span><b>(28:18)<\/b><span style=\"font-weight: 400;\">. Margolis discusses future research avenues by outlining a multi-omics analysis of brain-gut microbiome disease <\/span><b>(29:50)<\/b><span style=\"font-weight: 400;\"> that should be published in the coming year and a new longitudinal pilot study that will shed light on how behavior changes and shifts in microbiome\/metabolome interplay <\/span><b>(34:35)<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">95% of serotonin in the body is located in the gut\/intestine, where the presence of particular organisms or medications can stimulate the formation or breakdown of serotonin <\/span><b>(37:00)<\/b><span style=\"font-weight: 400;\">. The serotonin uptake transporter (SERT) is a critical part of the link pathway that modulates the balance of serotonin in the gut and the brain by inactivating serotonin. Abnormalities in this connection are overexpressed in individuals with autism <\/span><b>(37:45)<\/b><span style=\"font-weight: 400;\">. In a genetic model experiment <\/span><b>(38:25)<\/b><span style=\"font-weight: 400;\"> researchers found the most common SERT variants found in families with ASD and pushed it into mice models. The affected mice presented with core autism-related behavioral abnormalities, high blood serotonin levels, constipation <\/span><b>(39:25)<\/b><span style=\"font-weight: 400;\">, and small bowel bacterial overgrowth <\/span><b>(40:00)<\/b><span style=\"font-weight: 400;\"> \u2013 all of which are common characteristics of GI distress in children with autism. Researchers then selectively activated the 5-HT4 receptors <\/span><b>(40:48)<\/b><span style=\"font-weight: 400;\"> (increased GI speed, increased neuron development in GI tract, etc. <\/span><b>(41:30)<\/b><span style=\"font-weight: 400;\">), which in turn corrected the defects in the gut and nervous systems, normalized constipation effects, and prevented abnormalities in the intestinal microbiome <\/span><b>(42:18)<\/b><span style=\"font-weight: 400;\">. These findings have been pivotal in shifting focus to the role of serotonin in brain-gut disease, which has opened pathways to creating a slow-release form of serotonin 5-HTP, which is currently in the drug development phase <\/span><b>(42:44)<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Margolis concludes by emphasizing the prevalence of GI problems in individuals with autism and the relative differences in clinical presentation compared to neurotypical children. She discusses current large-scale GI studies surrounding the microbiome and serotonin and reemphasizes the future potential for drug development. She then answers questions surrounding gastroenterologist availability, comments on the value of building relationships with patients and families, and discusses GI issues across cultures and diets, and finally emphasizes that families should seek care from more than one professional as various comorbidities cannot likely be treated in one place or by one clinician.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you are interested in taking part in clinical trials, visit<\/span><a href=\"https:\/\/www.clinicaltrials.gov\/\"><span style=\"font-weight: 400;\"> clinicaltrials.gov<\/span><\/a><span style=\"font-weight: 400;\">\u00a0\u00a0<\/span><\/p>\n<\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:40px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_6 1_6 fusion-one-sixth fusion-column-last\" style=\"--awb-bg-size:cover;width:16.666666666667%;width:calc(16.666666666667% - ( ( 4% + 4% ) * 0.16666666666667 ) );\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-column-wrapper-legacy\"><div class=\"fusion-clearfix\"><\/div><\/div><\/div><\/div><\/div><div id=\"jump\" class=\"fusion-container-anchor\"><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-3 fusion_builder_column_1_3 1_3 fusion-one-third fusion-column-first\" style=\"--awb-bg-size:cover;width:33.333333333333%;width:calc(33.333333333333% - ( ( 4% ) * 0.33333333333333 ) );margin-right: 4%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-column-wrapper-legacy\"><div class=\"fusion-text fusion-text-3\"><p><strong><img decoding=\"async\" class=\"lazyload alignleft size-full wp-image-2855\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27100%27%20height%3D%2795%27%20viewBox%3D%270%200%20100%2095%27%3E%3Crect%20width%3D%27100%27%20height%3D%2795%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/autism.org\/wp-content\/uploads\/2019\/01\/karamargolis.jpg\" alt=\"\" width=\"100\" height=\"95\" \/>Kara Gross Margolis, MD<\/strong> is an Associate Professor of Pediatrics and a pediatric gastroenterologist with a clinical expertise in brain-gut axis disorders, and particularly autism spectrum disorders (ASD). She has published highly novel observations on the roles that enteric neurotransmitters, specifically serotonin and oxytocin, play in enteric nervous system (ENS) development and how, when signaling of either of these neurotransmitters is abnormal, result in intestinal inflammation and\/or motility dysfunction. She has more recently leveraged her expertise to study disorders of the brain-gut axis from the perspective of the ENS. Her studies in this area thus far have focused on two disorders that have been classically thought of as central nervous system (CNS)-centric, ASD and developmental antidepressant (selective serotonin reuptake inhibitor; SSRI) exposure. Her overall goals are to pursue translational research that interrogates basic mechanisms underlying important clinical conditions, in order to utilize this knowledge to develop novel therapeutic strategies.<\/p>\n<\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-4 fusion_builder_column_2_3 2_3 fusion-two-third fusion-column-last\" style=\"--awb-bg-size:cover;width:66.666666666667%;width:calc(66.666666666667% - ( ( 4% ) * 0.66666666666667 ) );\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-column-wrapper-legacy\"><div class=\"fusion-text fusion-text-4\"><h4>Take the knowledge quiz<\/h4>\n<p>Can&#8217;t see the quiz below? 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fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:30px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-recent-posts fusion-recent-posts-1 avada-container layout-default layout-columns-3\"><section class=\"fusion-columns columns fusion-columns-3 columns-3\"><article class=\"post fusion-column column col col-lg-4 col-md-4 col-sm-4\"><div class=\"fusion-flexslider fusion-flexslider-loading flexslider flexslider-hover-type-none\"><ul class=\"slides\"><li><a href=\"https:\/\/autism.org\/2026-research-updates-gi-symptoms-behavior\/\" aria-label=\"2026 Research Updates: GI Symptoms &#038; Behavior\" class=\"hover-type-none\"><img decoding=\"async\" width=\"700\" height=\"441\" src=\"https:\/\/autism.org\/wp-content\/uploads\/2020\/09\/AdobeStock_154166314-700x441.jpeg\" class=\"attachment-recent-posts size-recent-posts lazyload\" alt=\"Gut-brain connection or gut brain axis. Concept art showing a connection from the gut to the brain. 3d illustration.\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%272560%27%20height%3D%271556%27%20viewBox%3D%270%200%202560%201556%27%3E%3Crect%20width%3D%272560%27%20height%3D%271556%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/autism.org\/wp-content\/uploads\/2020\/09\/AdobeStock_154166314-700x441.jpeg\" data-srcset=\"https:\/\/autism.org\/wp-content\/uploads\/2020\/09\/AdobeStock_154166314-320x202.jpeg 320w, https:\/\/autism.org\/wp-content\/uploads\/2020\/09\/AdobeStock_154166314-700x441.jpeg 700w\" data-sizes=\"auto\" \/><\/a><\/li><\/ul><\/div><div class=\"recent-posts-content\"><span class=\"vcard\" style=\"display: none;\"><span class=\"fn\"><a href=\"https:\/\/autism.org\/author\/melanie\/\" title=\"Posts by Melanie Glock\" rel=\"author\">Melanie Glock<\/a><\/span><\/span><span class=\"updated\" style=\"display:none;\">2026-03-10T17:36:23-05:00<\/span><h4 class=\"entry-title\"><a href=\"https:\/\/autism.org\/2026-research-updates-gi-symptoms-behavior\/\">2026 Research Updates: GI Symptoms &#038; Behavior<\/a><\/h4><p class=\"meta\"><span class=\"vcard\" style=\"display: none;\"><span class=\"fn\"><a href=\"https:\/\/autism.org\/author\/melanie\/\" title=\"Posts by Melanie Glock\" rel=\"author\">Melanie Glock<\/a><\/span><\/span><span class=\"updated\" style=\"display:none;\">2026-03-10T17:36:23-05:00<\/span><span>December 2nd, 2026<\/span><span class=\"fusion-inline-sep\">|<\/span><a href=\"https:\/\/autism.org\/category\/webinar\/anxiety\/\" rel=\"category tag\">Anxiety<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/challenging-behaviors\/\" rel=\"category tag\">Challenging Behaviors<\/a>, <a href=\"https:\/\/autism.org\/category\/depression\/\" rel=\"category tag\">depression<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/gastrointestinal-webinar\/\" rel=\"category tag\">Gastrointestinal<\/a>, <a href=\"https:\/\/autism.org\/category\/health\/\" rel=\"category tag\">Health<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/immune-issues\/\" rel=\"category tag\">Immune Issues<\/a>, <a href=\"https:\/\/autism.org\/category\/medical-care\/\" rel=\"category tag\">Medical Care<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/neurological\/\" rel=\"category tag\">Neurological<\/a>, <a href=\"https:\/\/autism.org\/category\/parenting\/\" rel=\"category tag\">Parenting<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/prenatal-health\/\" rel=\"category tag\">Pregnancy<\/a>, <a href=\"https:\/\/autism.org\/category\/research\/\" rel=\"category tag\">Research<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/research-webinar\/\" rel=\"category tag\">Research<\/a>, <a href=\"https:\/\/autism.org\/category\/self-injury-2\/\" rel=\"category tag\">Self Injury<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/self-injury\/\" rel=\"category tag\">Self-Injury<\/a>, <a href=\"https:\/\/autism.org\/webinars\/\" rel=\"category tag\">Webinar<\/a><span class=\"fusion-inline-sep\">|<\/span><\/p><p>  Free webinar at 1:00 p.m. Eastern time (US), December 2, 2026 Dr. Bradley Ferguson, PhD,\u00a0a\u00a02024 research grant recipient, will share emerging research on the interaction of GI symptoms and behavior in autism. <\/p><\/div><\/article><article class=\"post fusion-column column col col-lg-4 col-md-4 col-sm-4\"><div class=\"fusion-flexslider fusion-flexslider-loading flexslider flexslider-hover-type-none\"><ul class=\"slides\"><li><a href=\"https:\/\/autism.org\/research-updates-gastrointestinal-issues-and-autism\/\" aria-label=\"Research Updates: Gastrointestinal Issues and Autism\" class=\"hover-type-none\"><img decoding=\"async\" width=\"500\" height=\"334\" src=\"https:\/\/autism.org\/wp-content\/uploads\/2019\/01\/gastro.jpg\" class=\"attachment-recent-posts size-recent-posts lazyload\" alt=\"man with gut problems\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27500%27%20height%3D%27334%27%20viewBox%3D%270%200%20500%20334%27%3E%3Crect%20width%3D%27500%27%20height%3D%27334%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/autism.org\/wp-content\/uploads\/2019\/01\/gastro.jpg\" data-srcset=\"https:\/\/autism.org\/wp-content\/uploads\/2019\/01\/gastro-200x134.jpg 200w, https:\/\/autism.org\/wp-content\/uploads\/2019\/01\/gastro-300x200.jpg 300w, https:\/\/autism.org\/wp-content\/uploads\/2019\/01\/gastro-400x267.jpg 400w, https:\/\/autism.org\/wp-content\/uploads\/2019\/01\/gastro.jpg 500w\" data-sizes=\"auto\" \/><\/a><\/li><\/ul><\/div><div class=\"recent-posts-content\"><span class=\"vcard\" style=\"display: none;\"><span class=\"fn\"><a href=\"https:\/\/autism.org\/author\/melanie\/\" title=\"Posts by Melanie Glock\" rel=\"author\">Melanie Glock<\/a><\/span><\/span><span class=\"updated\" style=\"display:none;\">2026-02-18T13:02:59-05:00<\/span><h4 class=\"entry-title\"><a href=\"https:\/\/autism.org\/research-updates-gastrointestinal-issues-and-autism\/\">Research Updates: Gastrointestinal Issues and Autism<\/a><\/h4><p class=\"meta\"><span class=\"vcard\" style=\"display: none;\"><span class=\"fn\"><a href=\"https:\/\/autism.org\/author\/melanie\/\" title=\"Posts by Melanie Glock\" rel=\"author\">Melanie Glock<\/a><\/span><\/span><span class=\"updated\" style=\"display:none;\">2026-02-18T13:02:59-05:00<\/span><span>July 29th, 2026<\/span><span class=\"fusion-inline-sep\">|<\/span><a href=\"https:\/\/autism.org\/category\/covid-19\/\" rel=\"category tag\">COVID-19<\/a>, <a href=\"https:\/\/autism.org\/category\/health\/\" rel=\"category tag\">Health<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/immune-issues\/\" rel=\"category tag\">Immune Issues<\/a>, <a href=\"https:\/\/autism.org\/category\/medical-care\/\" rel=\"category tag\">Medical Care<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/neurological\/\" rel=\"category tag\">Neurological<\/a>, <a href=\"https:\/\/autism.org\/category\/parenting\/\" rel=\"category tag\">Parenting<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/prenatal-health\/\" rel=\"category tag\">Pregnancy<\/a>, <a href=\"https:\/\/autism.org\/category\/research\/\" rel=\"category tag\">Research<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/research-webinar\/\" rel=\"category tag\">Research<\/a>, <a href=\"https:\/\/autism.org\/webinars\/\" rel=\"category tag\">Webinar<\/a><span class=\"fusion-inline-sep\">|<\/span><\/p><p>  Free webinar at 1:00 p.m. Eastern time (US), July 29, 2026 Harland Winter, MD, will discuss his research on gastrointestinal conditions in individuals with autism. Dr. Winter is an active investigator and educator<\/p><\/div><\/article><article class=\"post fusion-column column col col-lg-4 col-md-4 col-sm-4\"><div class=\"fusion-flexslider fusion-flexslider-loading flexslider flexslider-hover-type-none\"><ul class=\"slides\"><li><a href=\"https:\/\/autism.org\/research-updates-microbiome-research-and-autism\/\" aria-label=\"Research Updates: Microbiome Research and Autism\" class=\"hover-type-none\"><img decoding=\"async\" width=\"700\" height=\"441\" src=\"https:\/\/autism.org\/wp-content\/uploads\/2023\/08\/gut-microbiome-again-700x441.jpeg\" class=\"attachment-recent-posts size-recent-posts lazyload\" alt=\"Black and white drawing for human torso with multicolored bacteria and yeasts in digestive tract\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%272560%27%20height%3D%271706%27%20viewBox%3D%270%200%202560%201706%27%3E%3Crect%20width%3D%272560%27%20height%3D%271706%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/autism.org\/wp-content\/uploads\/2023\/08\/gut-microbiome-again-700x441.jpeg\" data-srcset=\"https:\/\/autism.org\/wp-content\/uploads\/2023\/08\/gut-microbiome-again-320x202.jpeg 320w, https:\/\/autism.org\/wp-content\/uploads\/2023\/08\/gut-microbiome-again-700x441.jpeg 700w\" data-sizes=\"auto\" \/><\/a><\/li><\/ul><\/div><div class=\"recent-posts-content\"><span class=\"vcard\" style=\"display: none;\"><span class=\"fn\"><a href=\"https:\/\/autism.org\/author\/melanie\/\" title=\"Posts by Melanie Glock\" rel=\"author\">Melanie Glock<\/a><\/span><\/span><span class=\"updated\" style=\"display:none;\">2026-02-09T15:13:30-05:00<\/span><h4 class=\"entry-title\"><a href=\"https:\/\/autism.org\/research-updates-microbiome-research-and-autism\/\">Research Updates: Microbiome Research and Autism<\/a><\/h4><p class=\"meta\"><span class=\"vcard\" style=\"display: none;\"><span class=\"fn\"><a href=\"https:\/\/autism.org\/author\/melanie\/\" title=\"Posts by Melanie Glock\" rel=\"author\">Melanie Glock<\/a><\/span><\/span><span class=\"updated\" style=\"display:none;\">2026-02-09T15:13:30-05:00<\/span><span>May 20th, 2026<\/span><span class=\"fusion-inline-sep\">|<\/span><a href=\"https:\/\/autism.org\/category\/covid-19\/\" rel=\"category tag\">COVID-19<\/a>, <a href=\"https:\/\/autism.org\/category\/health\/\" rel=\"category tag\">Health<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/immune-issues\/\" rel=\"category tag\">Immune Issues<\/a>, <a href=\"https:\/\/autism.org\/category\/medical-care\/\" rel=\"category tag\">Medical Care<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/neurological\/\" rel=\"category tag\">Neurological<\/a>, <a href=\"https:\/\/autism.org\/category\/parenting\/\" rel=\"category tag\">Parenting<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/prenatal-health\/\" rel=\"category tag\">Pregnancy<\/a>, <a href=\"https:\/\/autism.org\/category\/research\/\" rel=\"category tag\">Research<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/research-webinar\/\" rel=\"category tag\">Research<\/a>, <a href=\"https:\/\/autism.org\/webinars\/\" rel=\"category tag\">Webinar<\/a><span class=\"fusion-inline-sep\">|<\/span><\/p><p>  Free webinar at 1:00 p.m. Eastern time (US), May 20, 2026 Rosa Krajmalnik-Brown, Ph.D., will discuss her research on gut microbiota in individuals with autism who have gastrointestinal (GI) problems. She will share<\/p><\/div><\/article><article class=\"post fusion-column column col col-lg-4 col-md-4 col-sm-4\"><div class=\"fusion-flexslider fusion-flexslider-loading flexslider flexslider-hover-type-none\"><ul class=\"slides\"><li><a href=\"https:\/\/autism.org\/managing-constipation\/\" aria-label=\"Managing Digestive Issues and Constipation in Autism\" class=\"hover-type-none\"><img decoding=\"async\" width=\"500\" height=\"334\" src=\"https:\/\/autism.org\/wp-content\/uploads\/2019\/01\/gastro.jpg\" class=\"attachment-recent-posts size-recent-posts lazyload\" alt=\"man with gut problems\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27500%27%20height%3D%27334%27%20viewBox%3D%270%200%20500%20334%27%3E%3Crect%20width%3D%27500%27%20height%3D%27334%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/autism.org\/wp-content\/uploads\/2019\/01\/gastro.jpg\" data-srcset=\"https:\/\/autism.org\/wp-content\/uploads\/2019\/01\/gastro-200x134.jpg 200w, https:\/\/autism.org\/wp-content\/uploads\/2019\/01\/gastro-300x200.jpg 300w, https:\/\/autism.org\/wp-content\/uploads\/2019\/01\/gastro-400x267.jpg 400w, https:\/\/autism.org\/wp-content\/uploads\/2019\/01\/gastro.jpg 500w\" data-sizes=\"auto\" \/><\/a><\/li><\/ul><\/div><div class=\"recent-posts-content\"><span class=\"vcard\" style=\"display: none;\"><span class=\"fn\"><a href=\"https:\/\/autism.org\/author\/melanie\/\" title=\"Posts by Melanie Glock\" rel=\"author\">Melanie Glock<\/a><\/span><\/span><span class=\"updated\" style=\"display:none;\">2026-03-20T09:55:05-05:00<\/span><h4 class=\"entry-title\"><a href=\"https:\/\/autism.org\/managing-constipation\/\">Managing Digestive Issues and Constipation in Autism<\/a><\/h4><p class=\"meta\"><span class=\"vcard\" style=\"display: none;\"><span class=\"fn\"><a href=\"https:\/\/autism.org\/author\/melanie\/\" title=\"Posts by Melanie Glock\" rel=\"author\">Melanie Glock<\/a><\/span><\/span><span class=\"updated\" style=\"display:none;\">2026-03-20T09:55:05-05:00<\/span><span>April 1st, 2026<\/span><span class=\"fusion-inline-sep\">|<\/span><a href=\"https:\/\/autism.org\/category\/early-intervention\/\" rel=\"category tag\">Early Intervention<\/a>, <a href=\"https:\/\/autism.org\/category\/gastrointestinal\/\" rel=\"category tag\">Gastrointestinal<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/gastrointestinal-webinar\/\" rel=\"category tag\">Gastrointestinal<\/a>, <a href=\"https:\/\/autism.org\/category\/health\/\" rel=\"category tag\">Health<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/immune-issues\/\" rel=\"category tag\">Immune Issues<\/a>, <a href=\"https:\/\/autism.org\/category\/medical-care\/\" rel=\"category tag\">Medical Care<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/nutrition\/\" rel=\"category tag\">Nutrition<\/a>, <a href=\"https:\/\/autism.org\/category\/parenting\/\" rel=\"category tag\">Parenting<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/parenting-webinar\/\" rel=\"category tag\">Parenting<\/a>, <a href=\"https:\/\/autism.org\/category\/research\/\" rel=\"category tag\">Research<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/research-webinar\/\" rel=\"category tag\">Research<\/a>, <a href=\"https:\/\/autism.org\/category\/self-injury-2\/\" rel=\"category tag\">Self Injury<\/a>, <a href=\"https:\/\/autism.org\/category\/sleep-issues\/\" rel=\"category tag\">Sleep Issues<\/a>, <a href=\"https:\/\/autism.org\/webinars\/\" rel=\"category tag\">Webinar<\/a><span class=\"fusion-inline-sep\">|<\/span><\/p><p>      Free webinar at 1:00 p.m. Eastern time (US), April 1, 2026 Learn about evidence-based, effective nutritional strategies to manage constipation.      About the speaker: Kelly<\/p><\/div><\/article><article class=\"post fusion-column column col col-lg-4 col-md-4 col-sm-4\"><div class=\"fusion-flexslider fusion-flexslider-loading flexslider flexslider-hover-type-none\"><ul class=\"slides\"><li><a href=\"https:\/\/autism.org\/autism-and-gastrointestinal-comorbidities\/\" aria-label=\"Autism and Gastrointestinal Comorbidities &#8211; Research Updates\" class=\"hover-type-none\"><img decoding=\"async\" width=\"700\" height=\"441\" src=\"https:\/\/autism.org\/wp-content\/uploads\/2023\/02\/gastro-banner-700x441.png\" class=\"attachment-recent-posts size-recent-posts lazyload\" alt=\"Close-up of a gut scan showing detailed internal structures\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%272560%27%20height%3D%271133%27%20viewBox%3D%270%200%202560%201133%27%3E%3Crect%20width%3D%272560%27%20height%3D%271133%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/autism.org\/wp-content\/uploads\/2023\/02\/gastro-banner-700x441.png\" data-srcset=\"https:\/\/autism.org\/wp-content\/uploads\/2023\/02\/gastro-banner-320x202.png 320w, https:\/\/autism.org\/wp-content\/uploads\/2023\/02\/gastro-banner-700x441.png 700w\" data-sizes=\"auto\" \/><\/a><\/li><\/ul><\/div><div class=\"recent-posts-content\"><span class=\"vcard\" style=\"display: none;\"><span class=\"fn\"><a href=\"https:\/\/autism.org\/author\/melanie\/\" title=\"Posts by Melanie Glock\" rel=\"author\">Melanie Glock<\/a><\/span><\/span><span class=\"updated\" style=\"display:none;\">2025-08-25T11:44:52-05:00<\/span><h4 class=\"entry-title\"><a href=\"https:\/\/autism.org\/autism-and-gastrointestinal-comorbidities\/\">Autism and Gastrointestinal Comorbidities &#8211; Research Updates<\/a><\/h4><p class=\"meta\"><span class=\"vcard\" style=\"display: none;\"><span class=\"fn\"><a href=\"https:\/\/autism.org\/author\/melanie\/\" title=\"Posts by Melanie Glock\" rel=\"author\">Melanie Glock<\/a><\/span><\/span><span class=\"updated\" style=\"display:none;\">2025-08-25T11:44:52-05:00<\/span><span>March 20th, 2025<\/span><span class=\"fusion-inline-sep\">|<\/span><a href=\"https:\/\/autism.org\/category\/anxiety-2\/\" rel=\"category tag\">Anxiety<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/gastrointestinal-webinar\/\" rel=\"category tag\">Gastrointestinal<\/a>, <a href=\"https:\/\/autism.org\/category\/health\/\" rel=\"category tag\">Health<\/a>, <a href=\"https:\/\/autism.org\/category\/medical-care\/\" rel=\"category tag\">Medical Care<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/meltdowns\/\" rel=\"category tag\">Meltdowns<\/a>, <a href=\"https:\/\/autism.org\/category\/news\/\" rel=\"category tag\">News<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/nutrition\/\" rel=\"category tag\">Nutrition<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/research-webinar\/\" rel=\"category tag\">Research<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/self-care\/\" rel=\"category tag\">Self Care<\/a>, <a href=\"https:\/\/autism.org\/category\/self-injury-2\/\" rel=\"category tag\">Self Injury<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/self-injury\/\" rel=\"category tag\">Self-Injury<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/sensory\/\" rel=\"category tag\">Sensory<\/a>, <a href=\"https:\/\/autism.org\/webinars\/\" rel=\"category tag\">Webinar<\/a><span class=\"fusion-inline-sep\">|<\/span><\/p><p>   Mojdeh Mostafavi, MD, describes gastrointestinal conditions commonly seen in individuals with autism, including gastroesophageal reflux disease (GERD), inflammatory bowel disease (IBD), Eosinophilic GI disease (EGID), avoidant\/restrictive food intake disorder (ARFID), disorders of<\/p><\/div><\/article><article class=\"post fusion-column column col col-lg-4 col-md-4 col-sm-4\"><div class=\"fusion-flexslider fusion-flexslider-loading flexslider flexslider-hover-type-none\"><ul class=\"slides\"><li><a href=\"https:\/\/autism.org\/gi-behavior\/\" aria-label=\"Research Updates: GI Symptoms &#038; Behavior\" class=\"hover-type-none\"><img decoding=\"async\" width=\"450\" height=\"441\" src=\"https:\/\/autism.org\/wp-content\/uploads\/2024\/03\/GI2-450x441.jpeg\" class=\"attachment-recent-posts size-recent-posts lazyload\" alt=\"Child holding their stomach, showing signs of gut distress\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27450%27%20height%3D%27450%27%20viewBox%3D%270%200%20450%20450%27%3E%3Crect%20width%3D%27450%27%20height%3D%27450%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/autism.org\/wp-content\/uploads\/2024\/03\/GI2-450x441.jpeg\" data-srcset=\"https:\/\/autism.org\/wp-content\/uploads\/2024\/03\/GI2-66x66.jpeg 66w, https:\/\/autism.org\/wp-content\/uploads\/2024\/03\/GI2-450x441.jpeg 450w\" data-sizes=\"auto\" \/><\/a><\/li><\/ul><\/div><div class=\"recent-posts-content\"><span class=\"vcard\" style=\"display: none;\"><span class=\"fn\"><a href=\"https:\/\/autism.org\/author\/autismadmin\/\" title=\"Posts by autismAdmin\" rel=\"author\">autismAdmin<\/a><\/span><\/span><span class=\"updated\" style=\"display:none;\">2025-08-25T11:42:07-05:00<\/span><h4 class=\"entry-title\"><a href=\"https:\/\/autism.org\/gi-behavior\/\">Research Updates: GI Symptoms &#038; Behavior<\/a><\/h4><p class=\"meta\"><span class=\"vcard\" style=\"display: none;\"><span class=\"fn\"><a href=\"https:\/\/autism.org\/author\/autismadmin\/\" title=\"Posts by autismAdmin\" rel=\"author\">autismAdmin<\/a><\/span><\/span><span class=\"updated\" style=\"display:none;\">2025-08-25T11:42:07-05:00<\/span><span>March 5th, 2025<\/span><span class=\"fusion-inline-sep\">|<\/span><a href=\"https:\/\/autism.org\/category\/anxiety-2\/\" rel=\"category tag\">Anxiety<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/gastrointestinal-webinar\/\" rel=\"category tag\">Gastrointestinal<\/a>, <a href=\"https:\/\/autism.org\/category\/health\/\" rel=\"category tag\">Health<\/a>, <a href=\"https:\/\/autism.org\/category\/medical-care\/\" rel=\"category tag\">Medical Care<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/meltdowns\/\" rel=\"category tag\">Meltdowns<\/a>, <a href=\"https:\/\/autism.org\/category\/news\/\" rel=\"category tag\">News<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/nutrition\/\" rel=\"category tag\">Nutrition<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/research-webinar\/\" rel=\"category tag\">Research<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/self-care\/\" rel=\"category tag\">Self Care<\/a>, <a href=\"https:\/\/autism.org\/category\/self-injury-2\/\" rel=\"category tag\">Self Injury<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/self-injury\/\" rel=\"category tag\">Self-Injury<\/a>, <a href=\"https:\/\/autism.org\/category\/webinar\/sensory\/\" rel=\"category tag\">Sensory<\/a>, <a href=\"https:\/\/autism.org\/webinars\/\" rel=\"category tag\">Webinar<\/a><span class=\"fusion-inline-sep\">|<\/span><\/p><p>    Dr. Bradley Ferguson, PhD, a 2024 research grant recipient, discusses emerging research on the interaction of GI symptoms and stress in autism. He outlines recent investigations highlighting the connection between GI<\/p><\/div><\/article><\/section><\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":9724,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[85,24],"tags":[4693,4864,58,3193,9495,4895,6941,3801,3824,9494,4552,5002,9492,3085,4972,72,9497,9496,3935,9493],"class_list":["post-5909","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gastrointestinal-webinar","category-webinar","tag-ari-webinar","tag-asd","tag-autism","tag-diet","tag-dr-margolis","tag-gastrointestinal-issues","tag-gastrointestinal-issues-asd","tag-gi","tag-gross-margolis","tag-kara-gross-margolis","tag-medical-comorbidities","tag-nervous-system","tag-neurotransmitters","tag-nutrition","tag-oxytocin","tag-research","tag-role-of-oxytocin","tag-role-of-serotonin","tag-serotonin","tag-the-role-of-neurotransmitters-in-gi-disorders-related-to-autism","webinar-author-kara-gross-margolis"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.6 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>The Role of Neurotransmitters in GI Disorders Related to Autism<\/title>\n<meta name=\"description\" content=\"Learn about research on gastrointestinal issues in individuals diagnosed with autism spectrum disorders and take a brief knowledge quiz.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/autism.org\/gastrointestinal-autism-research\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Role of Neurotransmitters in GI Disorders Related to Autism\" \/>\n<meta property=\"og:description\" content=\"Learn about research on gastrointestinal issues in individuals diagnosed with autism spectrum disorders and take a brief 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