if the prostate enlarges, it puts problems on the bladder and the bladder is empty. >> the other thing i would add to this is if you're taking diuretics, you're going to be going to bed and getting up all the time. but large prostate is when the prostate gets enlarged, it breaths on the urethra. and what happens is men get up, they go to the bathroom, they try to empty, they but they don't completely empty their urine. this continues. it interrupts their sleep, they're always tired. what we do as a urologist, we basically locate it with a scope, see the size of the prostate, you use that to find out what the residual is. based on that, you either do no treatment or you may give them some treatment like flomax or