By age 60, more than half of all men suffer from a benign enlargement of the prostate, which blocks the flow of urine through the urethra. By age 85, that number reaches 90 percent. Symptoms include a weak or slow urinary stream, an urgency to urinate, and frequent trips to the bathroom at night. Ignoring the symptoms can lead to urinary tract infection, bladder stones, blood in the urine and incontinence. Be proactive in managing this highly treatable condition.