Benign prostatic hyperplasia (aka BPH, benign prostatic hypertrophy, or an enlarged prostate) is a condition that most often affects older men. As men get older, the prostate gland naturally becomes enlarged. This can put pressure on the bladder and urethra, causing problems with urination. Over 50 percent of men in their 60s and up to 90 percent of men in their 70s and 80s have some symptoms of an enlarged prostate.