An Ejaculation a Day May Keep Prostate Cancer at Bay Wed Jul 16,10:35 PM ET SYDNEY (Reuters) - Frequent masturbation may be really good for you. Research by Australia's Cancer Council Victoria found that the more often men ejaculate between the ages of 20 and 50, the less likely they are to suffer the disease that kills more than half a million men each year. The survey of 1,079 prostate cancer (news - web sites) patients and 1,259 healthy men found that those who masturbated or had sex at least once a day in their 20s were a third less...