The average age of menopause in the United States is around 51 years old, but the onset can widely vary. Premature menopause refers to menopause of onset at or before 40 years of age. This can occur because of  a variety of causes, including surgery (i.e. bilateral oophorectomy, removal of ovaries), chemotherapy or pelvic radiation treatments for cancer, chromosomal or genetic defects, and spontaneous premature ovarian failure.
 

 
Can hormone replacement therapy be used for prevention of chronic conditions?

Response from Jenny A. Van Amburgh, PharmD, CDE

Assistant Dean of Academic Affairs; Associate Clinical Professor, School of Pharmacy, Northeastern University; Director, Clinical Pharmacy Team; Director, Residency Program, Harbor Health Services, Inc., Boston, Massachusetts

March 19, 2014—The number of menopausal women is projected to reach 50 million by 2020. With changing views on appropriate therapies to control symptoms and new treatments available and on the horizon, most internists lack the core competencies and experience to meet the needs of women entering menopause, according to a provocative Commentary published in Journal of Women’s Health, a peer-reviewed publication from Mary Ann Liebert, Inc., publishers. The article is available free on the Journal of Women’s Health website.