The prostate wraps around the urethra, as it grows, it can close like a fist, squeezing the urethra. This typically causes the bladder to fill up too much, while at the same time making it harder to empty the bladder fully. The most common consequence is frequent waking during the night to pee.
That may sound like a minor problem, but it’s not. The frequent waking interrupts sleep, and as a nation, we’re sleep-deprived enough as it is. Sleep is one of the most important ingredients of a person’s overall health, so it’s important to treat an enlarged prostate if it’s causing a problem.