Brain Gut Link (IMAGE) DOE/Pacific Northwest National Laboratory Caption An illustration of the connection between the brain and microbes in the gut. Credit Courtesy of Nathan Johnson/PNNL Usage Restrictions Please use credit info. 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.