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Thank you, XXXXX XXXXX do not have prostatitus now. I want to know, given a normal-size protate, is regular ejaculation necessary to maintain a healthy prostate. Some people think regular voiding is necessary because of possible carcinogenic agents that could increase one's risk for protate cancer. For instance, the carcinogens in second hand tobacco smoke settle in the prostate. At least that is what I have read. Hence the need to ejaculate regularly.