A Beneficial Gut Bacteria, Clostridia, Prevents Excessive Weight Gain (image) University of Utah Health Share Print E-Mail Caption Mice that inevitably become obese have a compromised immune system and less of a class of bacteria called Clostridia in their gut microbiome than healthy mice. Giving Clostridia to the immune-impaired mice prevents obesity. Credit Luat Nguyen, University of Utah Health Usage Restrictions With credit Share Print E-Mail 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.