Despite its universality in human female aging, the menopause and its biology are not completely understood. New biologic mechanisms by which sex hormones may be detrimental or confer protection are continually being discovered. We are now starting to understand that the role of the estrogen receptor is not identical in all tissues. Important nongenomic effects for sex hormones have also been described. Hormone replacement therapy (HRT) has produced effects on health risks: some are reduced, some are increased, and the rest remain uncertain. HRT is being used by an increasing number of women to alleviate climacteric symptoms in the perimenopausal period and to prevent osteoporosis and cardiovascular disease later. Positive effects on Alzheimer's disease and dementia on the one hand, and an increase in venous thrombosis on the other, are currently being reported by several groups. Both the preventive benefits and the risk of breast cancer seem to be linked to long-term and current use. HRT requires further testing through specific clinical trials, currently underway in the United States, before confident recommendations may be made about the full range of benefits and risks.

Few topics in women's medicine today are as fraught with confusion and controversy as the question of appropriate treatment for menopausal symptoms and the prevention of negative long term health outcomes common to post-menopausal women. Cardiovascular disease (CVD), osteoporosis, and cancer -- the most common causes of death, disability and impaired quality of life for women -- can potentially be prevented or forestalled by dietary, behavioral, and drug interventions. A better understanding of the natural history of the menopause is critical to providing better care. If women and their physicians have a better understanding of predictors of risk, they could make more informed decisions about interventions related to menopausal symptoms, CVD, osteoporosis and gynecologic and breast cancer. Few other recently introduced medical interventions have as great a potential of affecting morbidity and mortality as does hormone replacement therapy (HRT). HRT has produced effect on health risk: some are reduced, some are raised, and some uncertain, and these data are interpreted differently by various scientific, medical and consumer groups.

This book includes the most significant contributions of the First International Symposium on "Multiple risk factors in cardiovascular disease", chaired by Professors A. V. Chobanian (Boston), A. M. Gotto Jr. (Houston), c. Lenfant (Bethesda), R. Paoletti and A. Zanchetti (Milan), held in Washington DC, 10-12 December 1990, which focused on the risk factors for cardiovascular disease and their interactions. The need for this symposium is based on the epidemiological evidence that individuals from industrialized countries often possess two or more risk factors which synergically increase the global risk profile. The evidence that isolated vascular risk factors are not commonly found in high risk patients but more often a combination of risk factors are detected, is highlighted. Many recent epidemiological data identifying the intrinsic and environ mental factors contributing to the development of atherosclerosis are discussed. These results, in parallel to basic and clinical research, underline how atherosclerosis is a complex and multifac torial process involving the influences of lipid deposition, blood pressure, rheologic forces, carbohydrate tolerance, and thrombogenic factors (fibrinogen and platelets). Atherosclerosis is markedly accelerated by other risk factors, more so in the presence of concomitant hypercholes terolemia, hypertension, diabetes, upper body obesity. Furthermore, the risk associated with anyone of these risk factors varies widely depending on level of the associated atherogenic risk factors.

Few topics in women's medicine today are as fraught with confusion and controversy as the question of appropriate treatment for menopausal symptoms and the prevention of negative long term health outcomes common to post-menopausal women. Cardiovascular disease (CVD), osteoporosis, and cancer - the most common causes of death, disability and impaired quality of life for women - can potentially be prevented or forestalled by dietary, behavioural and drug interventions. A better understanding of the natural history of the menopause is critical to providing better care. If women and their physicians have a better understanding of predictors of risk, they could make more informed decisions about interventions related to menopausal symptoms, CVD, osteoporosis and gynaecologic and breast cancer. Few other recently introduced medical interventions have as great a potential of affecting morbidity and mortality as does hormone replacement therapy (HRT). HRT has produced effect on health risk: some are reduced, some are raised, and some uncertain, and these data are interpreted differently by various scientific, medical and consumer groups.