Naoko Kobayashi, PhD (Damon Runyon Fellow ‘91-‘94) and colleagues at University of California, Los Angeles, reported results of a short-term Phase II clinical trial demonstrating anti-cancer benefits of fish oil. Men who ate a low-fat diet with fish oil supplements for four to six weeks before having their prostate removed had slower cancer cell growth in their prostate tissue than men who ate a typical high-fat Western diet. The researchers plan to expand this study to a larger group of men who will be monitored over an extended period of time (one year). This initial study, published in the journal Cancer Prevention Research, suggests that altering the diet may favorably affect the biology of prostate cancer.