Benign prostatic hyperplasia (BPH or prostate adenoma) is a benign enlargement of the prostate gland.
The causes of benign prostatic hyperplasia has not established yet. At the same time, it is known that the factors affecting on the increase of the gland are the age and level of the male sex hormone (testosterone). With age, the prostate gland becomes more sensitive to the level of the male sex hormone and grows faster. A family history of the disease (it is presenting in a father, maybe a son) also increases the risk.