By age 50, 5 out of 10 men have an enlarged prostate (BPH). By age 80, up to 9 out of 10 men have an enlarged prostate. Having an enlarged prostate does not always cause symptoms. But BPH symptoms also are age-related. By age 75, 5 out of 10 men complain of a decrease in the force of their urine streams.footnote 1
Lower urinary tract problems in men under age 40 are most likely caused by other conditions, such as prostate infection or failure of the smooth bladder muscles to relax during urination (voiding dysfunction).
Current as of: May 22, 2015
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