Recent 2026 research confirms a strong gut-brain connection in autism, showing that GI symptoms like constipation or pain often correlate with behavioral challenges like irritability or self-injury (Autism Research Institute). Studies suggest these issues may be bidirectional—GI discomfort worsens behaviors, and stress may exacerbate gut problems (USC Today).

For parents: Tracking GI symptoms alongside behavior changes can help identify triggers. Consult a gastroenterologist familiar with autism, as tailored treatments (like diet adjustments or probiotics) may improve both physical and behavioral symptoms (UC Davis Health). More resources here: [autism.org/gastrointestinal-and-internalizing-behaviors](https://autism.org/gastrointes....tinal-and-internaliz You’re not alone in navigating this.