What are the risk factors for enlarged prostate?

Here are some...: Slow progressive prostate enlargement in time encroaches & restricts urine flow passing through prostate leading to bladder's working harder & harder day by day, eventually weakening bladder muscle strength to contract & squeeze urine out of bladder efficiently, so to become more and more not able to empty. Also, high pressure inside bladder from hard work and urine retention will damage kidneys

See below: The greatest risk factor for enlarged prostate (aka BPH) is aging. ~50% of men by age 60 and 85% of men by age 85 have BPH and ~25-50% men in these age groups will have bothersome symptoms. Other risk factors include family history/genetics, ethnic background, obesity, lifestyle (poor diet and lack of exercise), and other heart disease risk factors: diabetes, HTN, high cholesterol, and tobacco use