002 scienceoffertility

Published by The Ovulation Method Research & Reference Centre of Australia in 2000, a report of the study of the effectiveness of the Billings Ovulation Method® in China.

GB2016 175A review of the research, published in peer-reviewed medical journals over 50+ years, which underpins the Billings Ovulation Method®

pdf Rock Solid Science (1.86 MB)

GemmaMuniz110Presentation by Dra. Gemma Muñiz Nicolás of WOOMB España to the WOOMB International Conference held in Zagreb, Croatia in May 2016

MargaretKnops thumbnailPresentation by Dr Margaret Knops of Fertility Care Scotland to the WOOMB International Conference held in Zagreb, Croatia in May 2016.

AuroraSaparosiThumbnailPaper delivered by Dr Aurora Saporosi at the WOOMB International Conference in Croatia, May 2016.

  pdf Billings Ovulation Method® and Monitoring Reproductive Health (2.58 MB)




This study, conducted by Research Team of Ovulation Method Research and Reference Centre of Australia Ltd. included all couples aiming to achieve a pregnancy who enrolled at any one of 17 Australian Billings Ovulation Method® clinics within the required time frame.  All couples were included regardless of age, cycle length, or pre-diagnosed sub-fertile indicators of either partner.

The Billings Ovulation Method has undergone intensive study and research and has been the subject of a number of published trials. What is clear from all the studies on the Billings Ovulation Method® is that couples wishing to use the Billings Ovulation Method should be made aware of the importance of gaining accurate information and encouraged to seek the assistance from an experienced accredited teacher of the method to achieve success.

Details of some of the trials:

Fertility is a transient biological state that depends on the fertility potential of the couple. During a women’s lifetime, the ovary will go through different states of hormonal secretion and ovulation. The concept of the ovarian cycle as a continuum considers that all types of ovarian activity encountered during the reproductive life are normal responses to different environmental conditions in order to ensure the health of the mother and child.

This paper was presented at the International Jubilee Conference, 50th Anniversary of Billings Ovulation Method®, University of Melbourne, Australia, conducted by Ovulation Method Research & Reference Centre of Australia, March 28-30, 2003.

In the 30 years fertile life of women, only a few days in each cycle are fertile and the rest of time infertile. People of insight have long considered making use of this natural phenomenon to regulate fertility. Early methods of natural family planning (rhythm, basal body temperature, symptothermal, etc.) are unsatisfactory for fertility regulation and the Chinese people did not accept them.

Originally published in 1994:  An introduction to and some new anatomical and physiological aspects of the cervix and vagina are presented and also an explanation of the biosynthesis and molecular structure of mucus.

The history of my discoveries of the different types of cervical mucus is given. In considering my microbiological investigations I suspected the existence of different types of crypts and cervical mucus and in 1959 1 proved the existence of these different types.

Fertility awareness constitutes fundamental knowledge for every woman and is an important tool for health professionals. The objective of this review is to show how fertility awareness can be useful in the assessment of a woman’s health. The main techniques for detecting ovulation are explained, and then the events that characterize a normal menstrual cycle are discussed. The relevance of cervical mucus from the perspective of female fertility is highlighted. Finally, the usefulness of fertility awareness 1) to identify fertile and infertile periods, 2) to help to detect several pathologies, and 3) in regards to how it exerts an important role in the success of programs in education for affectivity and sexuality are discussed.

The Importance of Fertility Awareness in the Assessment of a Woman’s Health

The Linacre Quarterly 79(4) (November 2012): 426–450.
© 2012 by the Catholic Medical Association. All rights reserved.

Woman is unique amongst females of all species in that her reproductive capacity ends in middle life. There is a progressive decline of fertility until, at about the age of 45 to 50 years, when perhaps she has another 25 or 30 years of active life ahead of her, she become infertile. The years during which fertility decreases are known as the climacteric (change of life). The term “menopause” is more strictly applied to the cessation of the menstrual bleeds.

The life of a new organism of the human species starts at the moment of fertilization. This is when the sperm and oocyte plasma membranes fuse. The ovarian continuum begins at fertilization, when the zygote starts its development.

Before the development of the Billings Ovulation Method®, the pre-ovulatory phase of the cycle presented insoluble problems, so far as techniques of natural family planning were concerned. There was no dependable solution other than total abstinence, sometimes very prolonged abstinence, as there are a number of situations when ovulation may be suspended for a considerable period of time, even several months or perhaps a year or more. Some thought that natural methods could never provide an answer for the pre-ovulatory phase because of uncertainty about sperm survival time. The solution came from recognition of the fact that the cervical mucus not only gives warning of the approach of ovulation, but is of fundamental importance to the time of sperm survival. A fundamental concept of the Billings Ovulation Method® is that of the Basic Infertile Pattern (BIP) during the pre-ovulatory phase of the cycle. The recognition of her Basic Infertile Pattern is the key to the woman’s understanding and management of the prolonged pre-ovulatory situation.

At the National Conference organized by the Ovulation Method Research and Reference Centre of Australia in Melbourne in October 2001, the following paper was contributed by Erik Odeblad, Emeritus Professor of Medical BioPhysics in the University of Umeå, Sweden.
The paper was read at the Conference by Drs John and Lyn Billings in combination.

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