Prostate Cancer Risk Is It True If A Man Ejaculates More Often, He Lessens His Risk Of Prostate Cancer?

Is it true if a man ejaculates more often, he lessens his risk of prostate cancer? - prostate cancer risk

I read somewhere. They have a study, and men who ejaculate more frequently to reduce their risk for prostate cancer. Anyone heard of it and how often you have to ejaculate in order to reduce the risk?