In a book of importance to all women, expert authors provide an authoritative rebuttal to the widely held belief that estrogen therapy is the best treatment for perimenopausal women. In this revealing work, a medical writer and an internationally known physician team up to explain the controversy over prescribing estrogen for perimenopausal women in the United States and to detail why progesterone is actually a far more effective, and far less risk-ridden, approach. Citing longstanding and emerging research, patient vignettes, and personal experience, endocrinologist Jerilynn Prior and writer Susan Baxter explain how false beliefs about estrogen became entrenched in U.S. medicine and culture-and how and why business and politics have played a role in this erroneous thinking. Like most women in Europe now, Prior's patients find progesterone the key to dealing with a lifecycle transition that, contrary to Western medicine, these authors do not see as a disease. Challenging medical orthodoxy, The Estrogen Errors: Why Progesterone Is Better for Women's Health presents arguments and evidence that women and their doctors, male and female, will find compelling and useful.