It has not been confirmed to an exact science what causes BPH. What researchers have found is that if a man has his testicles removed before puberty, he will not develop BPH later in life. Thus, it has been suggested that aging and the male reproductive and hormonal system (testicles, testosterone, etc.) contribute to the development of BPH.
As a man gets older, he produces less testosterone, which also leaves researchers to suggest that estrogen may be contributing to BPH, as “the higher share of estrogen in the prostate adds to the activity of substances that start prostate cells to grow.”
You may have heard that male baldness is linked to DHT. Well, DHT (dihydrotestosterone), another male hormone, can accumulate in the prostate, which may cause the continued growth of prostate cells. The reason researchers suggest DHT could be a contributing factor is because it has been “noted that men who do not produce DHT do not develop BPH.”
Other causes and risk factors potentially linked to BPH are the following:
– Aging (a higher percentage of men will have BPH the older they are)
– Excess weight (overweight and obese men may increase their risk of developing BPH, so poor nutrition or lack of physical activity may contribute negatively towards BPH
– Family history/genetic: men with family members who have had BPH may be likely to develop it as well, and there has been an increased risk found in men of African and Latin descent.
– Erectile dysfunction (ED)
Source: Urology Care Foundation