How about saturated fats? I ate fried chicken for a month and gained some respectable man-boobs (feeble joke)
Seriously though I don't think there's an actual drug that can do that for you (I could be wrong)
I'm gonna take a shot in the dark here and hesitantly suggest increasing your estroegen levels, by taking hormone therapy, but you need to speak to somebody with expertise on this; I have none.
Sorry I can't be more use to you on this.