(By Rajesh Balkrishnan, professor of public health sciences, and Randy A. Jones, professor of nursing) African-American men have the highest risk of being diagnosed with prostate cancer as well as dying from it compared to any other ethnic group in the U.S. Although research has focused on identifying the biological differences that may lead to this difference, there’s growing evidence that distinct racial and ethnic disparities in prostate cancer treatment, and the quality of medical care in African-American men, contribute to this disparity.