Gut microbiota are linked to gastrointestinal symptoms and behavioral changes but not inflammation in autism spectrum disorder: a cross-sectional analysis.
No evidence of gastrointestinal or systemic inflammation, nor of increased gut permeability to explain the symptoms was found, however, children with ASD who have more disturbed social awareness are prone to more severe GI symptoms, reduced fecal microbial diversity and abnormal fecal microbial composition.