Dr. Elaine Hardman, Marshall University (IMAGE) Marshall University Research Corporation Caption Dr. Elaine Hardman of Marshall University led a recent study that showed the risk of breast cancer dropped significantly in mice when their regular diet included a modest amount of walnut. Credit Photo by Rick Haye/Marshall University. Usage Restrictions With proper credit. 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.