Men who have been treated for prostate cancer, either with surgery or radiation, could benefit from taking aspirin regularly, according to a U.S. study  published this week in the Journal of Clinical Oncology.Taking aspirin is associated with a lower risk of death from prostate cancer, especially for men with high-risk prostate cancer, according to the study. Kevin Choe, assistant professor of radiation oncology at the University of Texas Southwestern Medical Center, is first author of the paper. Preclinical studies have shown that aspirin and other  anticoagulation medications may inhibit cancer growth and metastasis, but clinical data have been limited previously.The new study looked at almost 6,000 men who had prostate cancer treated with surgery or radiotherapy. About 2,200 of the men involved, or 37 percent, were receiving  anticoagulants ( warfarin, clopidogrel, enoxaparin, and/or aspirin).