Prostate Cancer Predictor: Finger Length Is your index finger longer than your ring finger? By Kevin Spak, Newser Staff Posted Dec 28, 2010 8:23 AM CST Updated Jan 1, 2011 7:28 AM CST 19 comments Comments Men with longer index fingers than ring fingers are less likely to develop prostate cancer. (Shutterstock) (Newser) – Is your index finger longer than your ring finger? No? Well then we’ve got some bad news for you. A new study, published in the British Journal of Cancer, has discovered that men with longer index fingers were 33% less likely to develop prostate cancer. Researchers theorize that since hormones affect hand development, it might be a simple indication of testosterone levels—and high testosterone increases prostate cancer risk, the Wall Street Journal explains.