When it comes to investigating prostate cancer (as with many forms of cancer), there is a lot of inaccurate information out there and it's easy for people to get confused between fact and fiction. We've put together a list of 10 common myths about prostate cancer and debunked them for you, based on information from the Prostate Cancer Foundation. 1. Prostate cancer only happens to old men. While the risk of prostate cancer increases as a man ages, there are many men who are diagnosed in their 40s and 50s. The risk of a man developing prostate cancer between the ages of 40 and 59 is one in 38, and this jumps to one in 15 between the ages of 60 and 69. Dr. Norman Swan leads a candid panel discussion about prostate health.