JOURNAL
Autism and the gut: impact of gastrointestinal dysfunction on brain activity and behavior in autism spectrum disorders
About the Authors
Manzura Kankina – Senior Nurse of the Psychoneurological Department, NJSC "National Center for Children's Rehabilitation", Astana, Kazakhstan, This email address is being protected from spambots. You need JavaScript enabled to view it., https://orcid.org/0009-0001-9434-5389
Bekzat Khalimgaziyeva – Nurse of the Psychoneurological Department, NJSC "National Center for Children's Rehabilitation", Astana, Kazakhstan, This email address is being protected from spambots. You need JavaScript enabled to view it., https://orcid.org/0009-0003-6138-7392
Aiman Bektembaeva – Nurse of the Psychoneurological Department, NJSC "National Center for Children's Rehabilitation", Astana, Kazakhstan, This email address is being protected from spambots. You need JavaScript enabled to view it.
Akerke Zafidinkyzy – Nurse of the Psychoneurological Department, NJSC "National Center for Children's Rehabilitation", Astana, Kazakhstan, This email address is being protected from spambots. You need JavaScript enabled to view it.
Esmira Sadebay – Nurse of the Psychoneurological Department, NJSC "National Center for Children's Rehabilitation", Astana, Kazakhstan, This email address is being protected from spambots. You need JavaScript enabled to view it.
Аbstract
Recent studies increasingly support the strong connection between the gut and brain, particularly in Autism Spectrum Disorders. This article explores the theoretical foundations of the gut–brain axis, as well as the metabolic and neuroimmune pathways involved in the pathophysiology of Autism Spectrum Disorders. It also reviews current diagnostic tools and treatment strategies. Particular emphasis is placed on the role of gut microbiota and the potential for its modulation through probiotics, dietary interventions, and experimental techniques. The paper highlights the importance of a multidisciplinary approach to diagnosis and therapy, and discusses the potential of early microbiota-targeted interventions for the prevention of Autism Spectrum Disorders in high-risk children.
Keywords
autism, autism spectrum disorders, gut microbiota, gut-brain axis, probiotics, inflammation.
References
- Zeidan, J., et al. (2022). Global prevalence of autism: A systematic review update. Autism Research, 15(5), 778-790. https://doi.org/10.1002/aur.2727
- Mahdi, S., et al. (2018). An international qualitative study of functioning in autism spectrum disorder using the World Health Organization international classification of functioning, disability and health framework. Autism Research, 11(3), 463-475. https://doi.org/10.1002/aur.1892
- Leader, G., et al. (2022). Gastrointestinal symptoms in autism spectrum disorder: a systematic review. Nutrients, 14(7), 1471. https://doi.org/10.3390/nu14071471
- Marshall, J., et al. (2014). Features of feeding difficulty in children with Autism Spectrum Disorder. International Journal of Speech-Language Pathology, 16(2), 151-158. https://doi.org/10.3109/17549507.2014.933935
- Chaidez, V., Hansen, R. L., & Hertz-Picciotto, I. (2024). Gastrointestinal problems in children with autism, developmental delays or typical development. Journal of Autism and Developmental Disorders, 44(5), 1117-1127. https://doi.org/10.1007/s10803-014-2067-x
- Ferguson, B. J., et al. (2019). The relationship among gastrointestinal symptoms, problem behaviors, and internalizing symptoms in children and adolescents with autism spectrum disorder. Frontiers in Psychiatry, 10, 194. https://doi.org/10.3389/fpsyt.2019.00194
- Chakraborty, P., et al. (2021). Gastrointestinal problems are associated with increased repetitive behaviors but not social communication difficulties in young children with autism spectrum disorders. Autism, 25(2), 405-415. https://doi.org/10.1177/1362361320954007
- Zhou, M., et al. (2025). Intervention and research progress of gut microbiota-immune-nervous system in autism spectrum disorders among students. Frontiers in Microbiology, 16, 1535455. https://doi.org/10.3389/fmicb.2025.1535455
- Młynarska, E., et al. (2025). The Gut–Brain–Microbiota Connection and Its Role in Autism Spectrum Disorders. Nutrients, 17(7), 1135. https://doi.org/10.3390/nu17071135
- Aziz-Zadeh, L., et al. (2025). Relationships between brain activity, tryptophan-related gut metabolites, and autism symptomatology. Nature Communications, 16(1), 3465. https://doi.org/10.1038/s41467-025-26888-3
- Wang, M., et al. (2019). Alterations in gut glutamate metabolism associated with changes in gut microbiota composition in children with autism spectrum disorder. mSystems, 4(1), e00321-18. https://doi.org/10.1128/msystems.00321-18
- Lyall, K., et al. (2017). The changing epidemiology of autism spectrum disorders. Annual Review of Public Health, 38(1), 81-102. https://doi.org/10.1146/annurev-publhealth-031816-044332
- Lyall, K., Schmidt, R. J., & Hertz-Picciotto, I. (2014). Maternal lifestyle and environmental risk factors for autism spectrum disorders. International Journal of Epidemiology, 43(2), 443-464. https://doi.org/10.1093/ije/dyt267
- Sharon, G., et al. (2016). The central nervous system and the gut microbiome. Cell, 167(4), 915-932. https://doi.org/10.1016/j.cell.2016.10.027
- Warner, B. B. (2019). The contribution of the gut microbiome to neurodevelopment and neuropsychiatric disorders. Pediatric Research, 85(2), 216-224. https://doi.org/10.1038/s41390-019-0326-1
- Dinan, T. G., & Cryan, J. F. (2017). Brain–gut–microbiota axis—mood, metabolism and behaviour. Nature Reviews Gastroenterology & Hepatology, 14(2), 69-70. https://doi.org/10.1038/nrgastro.2016.191
- Vuong, H. E., & Hsiao, E. Y. (2017). Emerging roles for the gut microbiome in autism spectrum disorder. Biological Psychiatry, 81(5), 411-423. https://doi.org/10.1016/j.biopsych.2016.04.028
- Restrepo, B., et al. (2020). Developmental–behavioral profiles in children with autism spectrum disorder and co‐occurring gastrointestinal symptoms. Autism Research, 13(10), 1778-1789. https://doi.org/10.1002/aur.2345
- Rosenfeld, C. S. (2015). Microbiome disturbances and autism spectrum disorders. Drug Metabolism and Disposition, 43(10), 1557-1571. https://doi.org/10.1124/dmd.115.065244
- De Angelis, M., et al. (2013). Fecal microbiota and metabolome of children with autism and pervasive developmental disorder not otherwise specified. PloS One, 8(10), e76993. https://doi.org/10.1371/journal.pone.0076993
- Sharon, G., et al. (2019). Human gut microbiota from autism spectrum disorder promote behavioral symptoms in mice. Cell, 177(6), 1600-1618.e17. https://doi.org/10.1016/j.cell.2019.05.004
- Yang, Y., Tian, J., & Yang, B. (2018). Targeting gut microbiome: A novel and potential therapy for autism. Life Sciences, 194, 111-119. https://doi.org/10.1016/j.lfs.2017.12.022
- Żebrowska, P., Łaczmańska, I., & Łaczmański, Ł. (2021). Future directions in reducing gastrointestinal disorders in children with ASD using fecal microbiota transplantation. Frontiers in Cellular and Infection Microbiology, 11, 630052. https://doi.org/10.3389/fcimb.2021.630052
- Marti, F. L. (2014). Dietary interventions in children with autism spectrum disorders—an updated review of the research evidence. Current Clinical Pharmacology, 9(4), 335-349. https://doi.org/10.2174/157488471001140902182757

