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The Centre for Menstrual Cycle and Ovulation Research has developed a number of tools and resources that healthcare workers may find helpful.

Cyclic Progesterone Therapy

Progesterone is one of two important hormones for women (estrogen is the one we usually hear about). Menstrual cycle hormone levels can be disturbed, even during regular cycles. The most common disturbance is of ovulation causing progesterone levels to become too low or absent.
Your doctor may prescribe progesterone to control heavy periods, severe menstrual cramps (dysmenorrhea) or to help with irregular periods, acne, unwanted hair, low bone density, or sore and lumpy breasts.


Very Heavy Menstrual Flow

When periods are very heavy or you are experiencing “flooding” or passing big clots you have what doctors call menorrhagia. The purpose of this article is to define normal and very heavy menstrual bleeding, to explain what causes heavy flow, and to show what you yourself can do in dealing with heavy flow. This, and the article called “Managing Menorrhagia—Effective Medical Treatments” for your doctor or health care provider, are to help you avoid surgeries for heavy flow (hysterectomy and endometrial ablation) if you can.


For Healthcare Providers: Managing Menorrhagia Without Surgery

When a woman comes to you saying that her periods are "heavy" she's "flooding" or she's passing clots, what do you normally do to assess and treat her? The purpose of this paper is to define normal menstruation and how to clinically assess menstrual flow. In addition, you will learn how to make a diagnosis of menorrhagia some practical medical ways in which you can manage menorrhagia.


Contraceptive Choices—seeking effective, convenient, safe and ovulation-friendly birth control

Our primary goal when choosing a reversible birth control method is that it effectively prevent pregnancy, is without personal unwanted side-effects and is affordable and convenient. CeMCOR believes we should add a second goal—that the effective/safe chosen contraceptive method also preserves normal menstrual cycles and ovulation.


Ovarian Hormone Therapy for Women in the 21st Century

This article was prepared in conjunction with a conference presentation in May 2015. It outlines new information and updates to what is known about ovarian hormone therapy.


Depo Provera Use and Bone Health

New science decreases concerns even about use in teenagers

by Drs. Azita Goshtasebi & Jerilynn C. Prior


The ABCs of Osteoporosis Prevention for Teenage Women

The teen years are a time of major change occurring before and after the first menstrual period. During these years bone not only increases in size (with growth) but also becomes stronger to reach peak bone mass. This is the best time in your life to build strong bones and begin lifelong healthy bone habits.

Life Phase: 

Preventive Powers of Ovulation and Progesterone

This series of articles, originally published in the CeMCOR newsletter, illustrate the importance of ovulation throughout women's reproductive life. The articles explain what ovulation is and address some of the issues and implications of ovulatory disturbances.


Painful Periods

Painful periods are known as cramps. This section looks at what causes cramps and how to ease the discomfort. Doctors call painful periods or crampsdysmenorrhea.” They are caused by high levels of prostaglandins, a kind of hormone that increases the normal squeezing or contraction of the muscle in the wall of the uterus.



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.

Join a Study:

Get Involved

Volunteer research participants are the heart of all CeMCOR research. Participants are invited to provide feedback on study processes, to learn their own results and at the end of a study, be the first to hear what the whole study found. Please become a CeMCOR research participant—you can contribute to improving the scientific information available for daughters, friends and the wider world of women.