[Lotus]

Please be specific, where did you read that from?

Sure, I read about it as a secondary source, but it may be referring to this:

http://www.ncbi.nlm.nih.gov/pubmed/189591

The mechanism by which prolactin causes enhanced androgen responses in the prostate gland and seminal vesicles is not well understood. It would appear, however, that prolactin neither stimulates increased accumulation of androgen into the accessory sex organs, nor does it enhance the conversion of testosterone to the more "active" androgen, dihydrotestosterone.