Gastrointestinal Issues in Autism Spectrum Disorder


The author reviews and discusses G.I. issues found in autistic individuals including the effects of G.I. abnormalities on behavior issues as well as medical issues.


  • Historically, 7 out of the 11 children that Leo Kanner described in his study included children having eating/feeding problems.
  • The most common problems include chronic constipation, diarrhea and abdominal pain.
  • Gastroesophageal reflux, bloody stools, vomiting and gaseousness are also elevated in some individuals diagnosed with autism.
  • Continued research is needed in this area to better understand the correlation.



Hsiao, E. (2014). Gastrointestinal Issues in Autism Spectrum Disorder. Harvard Review of Psychiatry. 22(2) 104-111

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