Flushing out cancer-causing substances. According to the American Cancer Society, prostate cancer is the most common type of cancer found in American men, other than skin cancer. Men who ejaculated more often in their 40s were 22 percent less likely to get a prostate cancer diagnosis. BJU International, January ; vol Researchers followed about 32, men starting in when they were in their 20s and continuing through Those who reported 8 to 12 ejaculations per month in their 40s, for example, had a 10 percent reduction in prostate cancer risk, and those who reported 13 to 20 ejaculations per month in their forties had a 20 percent reduction. They estimate that about , new cases of prostate cancer will be diagnosed this year in the U. The exact cause of prostate cancer is unknown, and the only proven risk factors for the disease are increasing age, family history of the disease, and race or nationality prostate cancer is most common in North America and Europe. Sexual Factors and Prostate Cancer. This infection is sometimes caused by a sexually transmitted disease STD. Some prostatitis symptoms can be relieved by regular sexual activity and, in older men, regular ejaculation has protective effects against prostate cancer. Originally published April ; last reviewed February 24, These measured ejaculations included sexual intercourse, nocturnal emissions, and masturbation. The effect regular ejaculations have on the prostate should become a major talking point, especially amongst men who are experiencing prostate problems. October 17, November 2, Whether or not sex is good for prostate problems is a question many men wonder. Overall, regular safe sexual activity seems to be healthy for the prostate and for prostatitis.