Irving Bush and associates at Chicago's Cook County Hospital, tested the effect of zinc on patients with BPH symptoms. Zinc has been shown, in several controlled studies, to actually reverse prostate enlargement. However, zinc is poorly absorbed by the body on its own. Unless it is combined with Vitamin B6, zinc cannot be converted into a form that is readily used by the prostate. Therefore, any therapy using zinc supplementation must also include adequate intake of Vitamin B6.
Scientists believe that zinc is the natural modulator of prolactin secretion by the pituitary gland.