Results from previous protocols (#90-M-0088 and 92-M-0174) have demonstrated that women with menstrually-related mood disorder (MRMD), but not women lacking this disorder, experience mood deterioration within approximately a week after exposure to either estradiol or progesterone in the context of gonadal suppression (induced by use of the depot gonadotropin releasing hormone agonist, leuprolide acetate). It is unknown whether this hormone-induced depression occurs consequent to changes in gonadal steroid levels or to simple exposure to levels above a critical threshold. Additionally, since the symptoms of depression stimulated by hormone addback appeared to remit by the fourth week of hormone administration, it is unclear whether continued administration of hormone would result in continued or repeated experience of depression or whether no further symptoms would appear subsequent to the initial precipitated episode. To address these points of uncertainty, we first will establish the efficacy of gonadal suppression in our MRMD subjects by administering depot leuprolide acetate for three months and then will administer both estradiol and progesterone in a continuous fashion for three months to determine whether maintenance of stable gonadal steroid levels will prevent the characteristic cyclic mood disorder.