DEAR DOCTOR K: I have BPH. Can you explain how an enlarged prostate causes troublesome urinary symptoms?
DEAR READER: Around the time of a man's 25th birthday, his prostate gland begins to grow. This natural enlargement is called benign prostatic hyperplasia (BPH). It is the most common cause of prostate enlargement. If a man lives long enough, he will almost certainly experience some degree of BPH.