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Jerilynn Prior Biography

Jerilynn author 
Jerilynn C. Prior BA, MD, FRCPC, ABIM, ABEM is a Professor of Endocrinology and Metabolism at the University of British Columbia in Vancouver, B.C.
She has spent her career studying menstrual cycles and the effects of the cycle's estrogen and progesterone hormones on women's health. She is the founder (2002) and Scientific Director of the Centre for Menstrual Cycle and Ovulation Research (CeMCOR). CeMCOR is actively researching women's health and has a very accessible, informative website that receives on average between 3500-5000 page views per day ( She is also Director of the BC Centre of the Canadian Multicentre Osteoporosis Study (CaMOS) that is studying osteoporosis, fractures and bone density and has followed over 9000 adult women and men across the country for over 16 years, plus about a 1000 youth ages 16-24 for two years.

Dr. Prior has studied women's menstrual cycles, perimenopause and the causes for and treatment of osteoporosis. CeMCOR/Prior has shown that regular cycles (with enough estrogen) commonly do no produce sufficient progesterone (anovulation or short luteal phases). More versus fewer ovulatory disturbances within regular cycles are related to significant spinal bone loss in healthy women ages 20-45. She has shown in controlled trials that the ovarian hormone, progesterone, is effective treatment for menopausal hot flushes. She also documented in a 3-months trial that progesterone is safe for heart health. Dr. Prior is internationally known for her research showing that progesterone increases bone formation by stimulating osteoblasts. More recently, she has documented that estrogen levels, besides being unpredictable, are significantly higher than normal in the perimenopause, the 3-10 years of changes before menopause. She is widely sought as a speaker for professional and lay audiences and is the author of the award-winning book Estrogen's Storm Season: Stories of Perimenopause, an informative book about perimenopause told in story format. Estrogen's Storm Season was a finalist in the 2006 Independent Publishers Book Awards for Health. With Susan Baxter PhD, sociologist/medical journalist, Prior is author of Estrogen Errors - Why Progesterone Is Better For Women's Health (2009). This book aims to inform women of the decades of presumption and prejudice behind estrogen-centric women's health dogma. She has authored scientific papers numbering over 200 and holds 6 patents. She is an Honourary Alumna of the University of British Columbia Faculty of Medicine and was awarded its Distinguished Medical Research Lecturer Award (2002). She has numerous other honours including the Ann Voda Lifetime Achievement award of the Society for Menstrual Cycle Research.

Dr. Prior grew up in Alaska where she completed grade school and high school. Using scholarships, she received a Bachelor's of Arts in English Literature at Linfield College, Oregon (with honours) in 1965. She graduated from Boston University School of Medicine (with honours) in 1969. She began her training in Internal Medicine in Boston. Dr. Prior has previously worked as a physician in Boston, Mass., Poughkeepsie and Syracuse NY, and Barrow and Fairbanks, Alaska. She moved to Canada in 1976 and became a citizen because she believes in the Canadian universal health care system.

Dr. Prior has been singing with the Vancouver Bach Choir since 1979, walks and kayaks for relaxation and health and loves to read. Her daughter and son live and work in Vancouver. In 2008 she became the very proud, "Granny J."

Estrogen’s Storm Season: Stories of Perimenopause

Estrogen's Storm Season

by Dr. Jerilynn C Prior

New second edition available

Estrogen’s Storm Season is now available in BOTH print and eBook (Mobi and ePUB) versions!

All royalties support CeMCOR research.

It is full of lively, realistic stories with which women can relate and evidence-based, empowering perimenopause information. It was a finalist in 2006 for the Independent Publisher Book Award in Health.

Purchase your ebook copy via our Amazon Kindle or
Google Play storefronts!

Paperback copies (with updated insert) still available here.

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