What Is the Prostate?
By the time you reach age 40, your prostate might have gone from the size of a walnut to the size of an apricot. By the time you reach 60, it might be the size of a lemon.
Because it surrounds part of the urethra, the enlarged prostate can squeeze that tube, and if not treated, can completely stop your pee from exiting, which then causes your pee to keep filling your bladder as it ballons up, and then the pee back-ups into your kidney as it expands like the bladder and stores more and more pee.... until your body stops functioning and you are taken to the emergency room so they will catheter you to drain.
But by then you damaged your kidneys and bladder and even if your prostate is reduced to allow pee flow the enlarged bladder stretched their muscles such that they may not work anymore.
Doug