Artist Concept of Gut Bacteria (IMAGE) California Institute of Technology Caption An artist's concept of bacteria in the gut. New research shows that gut bacteria influence and contribute to autism-like behaviors in mice, altering their metabolic profiles and gene expression in the brain. The work suggests that symptoms of autism spectrum disorder may one day be remedied with bacterial metabolites or a probiotic drug. Credit Caltech Usage Restrictions Must use image credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.