The prostate is in a very critical strategic position in the male anatomy: below the bladder, above the urethra, with the pubic symphysis in front and the rectum behind. It guards the upper opening of the urethra, like a stronghold. However, its neighbors - the bladder, urethra, and rectum - are all organs responsible for excreting bodily waste. If the host's lifestyle becomes unbalanced, these can all become "pollution sources" for the prostate.