In terms of science, it is unknown what causes prostate enlargement specifically. Nonetheless, the development of the gland and testosterone levels may be influenced by elements associated with ageing and modifications in the testicular cells. Males who have undergone early testicular excision (due to, say, testicular cancer) are not susceptible to developing BPH. Those who still have testicles may develop BPH, or benign prostatic hyperplasia (hypertrophy), as a result of a hormonal imbalance in their later years.
It may be related to alterations in men's ageing sex hormone balance. The function of DHT, a male hormone that promotes prostate growth, has also been studied.
DHT levels appear to be higher in older males. And the expansion of prostate cells might be caused by an overabundance of DHT.
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