The Effect of Metformin on <i>C. elegans</i> (IMAGE) KU Leuven Caption Roundworms treated with metformin show very limited size loss and no wrinkling. Credit © Wouter De Haes Usage Restrictions None 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.