taken from Small Gland, Big Problem 4th Edition
by Professor Roger Kirby, Health Press 2011
Men who have an increased risk of prostatitis include those who have a previous history of the problem or long-term catheterization and those who have urinary tract infections that remain untreated. Unprotected anal intercourse may also spark off a bout of prostatic infection.
Prostatitis most commonly affects men in the age range 30–50 years, but a man of any age can be affected. In fact, most men afflicted have no identifiable risk factors.