Mice (IMAGE) Johns Hopkins Medicine Caption Obese women have a well-known risk for infertility, but a new Johns Hopkins Children's Center study has unraveled what investigators there believe is the mechanism that accounts for the risk. Credit Johns Hopkins Children's Center 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.