It is well established that progesterone plays a role in the brain and hypophysis as a facilitator and inhibitor of sexual behavior and gonadotropin release in the female rat (Everett 1961; Caligaris et al. 1971; Brown-Grant and Naftolin 1972; Dorner 1972; Meyerson 1972; Barraclough 1973; Goldman and Zarrow 1973; Mann and Barraclough 1973; Freeman et al. 1976; Feder and Marrone 1977; Goodman 1978; Attardi 1981), guinea pig (Morin and Feder 1974), and primates (Odell and Swerdloff 1968; Spies and Niswender 1972; Yamaji et al. 1972; Karsch et al. 1973; Dierschke et al. 1973; Knobi11974; Clifton...

Many women have to spend one third of their lives in a postmenopausal state and they should have a good quality of life during this period. Althoug HRT is well accepted as the logical treatment of climacteric problems, the prevalence rate is very low in some countries. The reasons for not accepting HRT are manifold and complex. The objective of this book is to describe the essential advances in basic and clinical research that forms the basis of current HRT and to give an overview of the efficacy and safety of HRT.