Liver & Sugar (image) University of Iowa Share Print E-Mail Caption A University of Iowa-led study has identified a hormone that appears to be involved in sugar cravings and consumption. The research could improve diet and help patients who are diabetic or obese. Credit University of Iowa Usage Restrictions None 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.