drosophila (IMAGE) Johannes Gutenberg Universitaet Mainz Caption Exposure to sugar and activation of the reward pathway can relieve depression-like states in the Drosophila fruit fly. Credit photo/©: Tim Hermanns Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.