Trichomonis could indeed be the culprit. It is present in almost all vagina’s and does not cause hardly any symptoms in females. But Tricho loves to live and breed in male prostate. Prostate has this extremely nutritious environment of sperm sustaining fluids and germs love to live there. Males who get frequent prostate symptoms such as frequent urge to urinate, and enlarged prostate would be safer wearing condoms unless of course you are trying to make a baby.
If so, and as squirm-inducing as the notion might sound, a trans-urethral dose of a strong antibiotic might prove beneficial in greatly reducing prostate cancer.
I suspect this isn’t the whole picture, though. Is there any sort of research that would tie behavior to incidence of prostate cancer? Are highly sexually active heterosexual males that much more prone? Everyone I’ve known who has had it has been married for decades and unless they just have me fooled, not prone to straying.
Prostate enlargement itself occurs due to DHT, dihydrotestosterone, which increases with age as free testosterone decreases. DHT is largely responsible for male pattern baldness as well.