you may want to look into maca, it is a superfood that helps balance the endocrine system. i started taking it but it was interfering with my detox program (it is high in protein) so i stopped before i would have been able to notice any effects. there are some posts on curezone about it if you want to find out some other people's experiences.
also, ive read that the herb agnus castus stimulates the pituitary to balance the hormones, though i have no personal experience of it.
sorry i dont have any resources to point you towards my research in this area is pretty slim on the ground.