Herbal medicine has a long history of traditional use, throughout the world, for menstrual irregularities and fertility. More recently, scientific research has been showing positive results for herbal and nutritional treatments for polycystic ovarian syndrome, and deepening our understanding of the underlying causes. We now know that herbs and nutrients can be used to adjust levels of specific hormones and encourage the normal, healthy function of organs. Teamed with modifying our diet and forming good habits in our daily lives, these therapies can form the basis of long-lasting hormonal change.