Cancer (IMAGE) Johns Hopkins Medicine Caption Photomicrographs comparing normal prostate tissue to cancerous. A new study, led by Johns Hopkins Medicine, shows — for what is believed to be the first time — that a healthy diet may help prevent low grade prostate cancer from progressing to a more aggressive disease. Credit Graphic created by M.E. Newman, Johns Hopkins Medicine, using public domain images Usage Restrictions N/A License Original 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.