what causes a prostate to shrink
Also, if the testicles are removed after a man develops BPH, the prostate begins to shrink in size. Some facts about prostate enlargement: 1  The likelihood of developing an enlarged prostate increases with age.  BPH is so common that it has been said all men will have an enlarged prostate if they live long enough.
These medications shrink your prostate by preventing hormonal changes that cause prostate growth. These medications â which include finasteride (Proscar) and dutasteride (Avodart) â might take up to six months to be effective. Side effects include retrograde ejaculation.