- Prayer and Worship
- Beliefs and Teachings
- Issues and Action
- Catholic Giving
- About USCCB
The methods of Natural Family Planning (NFP) are based on scientific research about the fertility of men and women. NFP makes use of specific information about the women's menstrual cycle and the signs of female fertility, which are related to the event of ovulation (when the egg is released from the ovary). NFP also pinpoints the "fertile window" which takes into account how long a man's sperm can live in a woman's body when the woman is fertile.
Over a century ago, scientists discovered cyclic changes in a woman's cervical fluid (or "mucus") and their relation to ovulation. In the 1920s, scientists identified the temperature rise ("basal body temperature" or BBT) that signals ovulation. It wasn't until the 1950s that scientists developed guidelines to teach men and women how to observe and interpret the signs of fertility. Today, research continues to refine the methods of NFP.
Learn more . . .
Human Fertility--What Biology Demonstrates
Cervical Mucus Method
Other Fertility Awareness Based Methods
NFP Education for Healthcare Professionals
NFP Science PowerPoint Presentations
NFP Science and Methodology Videos
◾Scientific Basis of NFP Methods (provided by FACTS)
◾Overview of the NFP Methods (provided by FACTS)
◾NFP Effectiveness (provided by FACTS)
◾Achievig Pregnancy with NFP (provided by FACTS)
Richard Fehring, PhD, RN, NFP Institute, Marquette University, College of Nursing and
Michael Manhart, PhD, Couple to Couple League.
Theresa Notare, PhD, Assistant Director, NFP Program, Secretariat of Laity, Marriage, Family Life and Youth, USCCB.
Part One | Part Two | Part Three
Part Four | Part Five
Note: The audio files are here for your use with the permission of Catholic Seminars. If you would like to purchase the files and view other files available from the 2013 NACFLM conference, see: www.catholicseminars.com.
"Natural Family Planning: A Review," Hanna Klaus, MD
This article provides a review of the classic scientific research behind the various methods of NFP.
By accepting this message, you will be leaving the website of the
United States Conference of Catholic Bishops. This link is provided
solely for the user's convenience. By providing this link, the United
States Conference of Catholic Bishops assumes no responsibility for,
nor does it necessarily endorse, the website, its content, or