What is it?
Natural family planning methods rely on a woman's knowledge and awareness of her body and menstrual cycle to avoid pregnancy. They do not rely on contraceptive devices, hormones or barrier methods to provide birth control.

There are many variations of natural family planning methods including: Calendar, Ovulation, Sympto-Thermal, and Post-Ovulation. For more detailed information on these methods and how they work, visit any of the following websites:

• Serena Canada - Serena is Canadian organization of people who use and promote the Sympto-Thermal method of natural family planning.
• Billings Ovulation Method - The Billings Ovulation Method is a natural method of fertility regulation that teaches couples when intercourse can result in conception and when it cannot.
• Justisse - The goal of Justisse is to teach every woman how to observe, chart and make sense of her menstrual cycle events, thereby giving women the skills to use fertility awareness methods of natural birth control.

How does it work?
A woman learns how to monitor her monthly cycle by tracking the days on a calendar and/or by taking her temperature and/or by monitoring changes to her cervical mucous. This information helps her determine when her body releases an egg (ovulates). Ovulation is when a woman is most likely to become pregnant from intercourse. Couples wishing to avoid pregnancy should then abstain from intercourse during those fertile days.

How effective is it in preventing pregnancy?
The effectiveness of natural family planning varies depending on the method used, the ability of the couple to identify the woman's actual fertile window, and the couple's ability to follow the instructions of the method they are using.

The Sympto-Thermal method is 95-98% effective when it is used perfectly. However, the typical use failure rate is up to 25% (when the couple doesn't follow the rules of the method perfectly all the time)

What are the advantages?

• The woman will become familiar with her body and menstrual cycles
• The information collected can be used later to plan a pregnancy
• Inexpensive
• Natural
• No negative health side effects
• An alternative method for women who cannot or do not want to use hormonal methods of birth control
• Fosters communication between partners

What are the disadvantages?

• Requires willpower, periodic abstinence, and motivation
• Takes time and effort to learn to use the method properly
• Does not protect against sexually transmitted diseases
• Reduces spontaneity