Is NFP Rhythm?
NFP is not "Rhythm."
The Rhythm (or Calendar) method was developed in the 1930s. It was based on the theory that the time of next ovulation could be determined by calculating previous menstrual cycles. This method often proved inaccurate because of the unique nature of each woman's menstrual cycle: some women have very irregular cycles and almost all women have a cycle of unusual length once in a while.
On the other hand, NFP methods are progressive. That is, they are based on progressive, day-to-day observations of the naturally occurring signs and symptoms of the fertile and infertile phases of the menstrual cycle. NFP methods take advantage of the changes associated with ovulation, treating each cycle as unique.
Couples using NFP to avoid pregnancy abstain from intercourse during the fertile phase of the woman's cycle. Couples who wish to achieve a pregnancy can also take advantage of the fertile time of the cycle. Because it allows couples to adjust their behavior to the naturally occurring cycles of a woman's body, NFP is not a contraceptive--i.e., it does nothing to work against conception.
|Who can use NFP?
Any married couple can use NFP! A woman need not have "regular" cycles. NFP education helps couples to fully understand their combined fertility, thereby helping them to either achieve or avoid a pregnancy. The key to the successful use of NFP is cooperation and communication between husband and wife--a shared commitment.
NFP is unique among methods of family planning because it enables its users to work with the body rather than against it. Fertility is viewed as a reality to live, not a problem to be solved.
What are the signs of fertility?
A woman's body provides three basic ways to identify the fertile and infertile times of her cycle. Recognizing the pattern of those physical signs forms the basis for all methods of NFP.
A primary sign of fertility is the mucus released from the women's cervix. A woman learns to identify the normal, healthy, cervical mucus which indicates the days that intercourse is most likely to result in a pregnancy. The second sign is her basal body temperature. Due to hormonal activity, a woman's waking temperature changes during the menstrual cycle. Lower temperatures indicate that ovulation has not yet occurred. Higher temperatures indicate a rise in progesterone which signals the end of the fertile time. The third sign is a change in the shape or texture of the cervix. Finally, secondary signs, such as minor abdominal pain or pressure at the time of ovulation can also be observed.
How does NFP work?
NFP instruction helps a couple identify the most opportune time to achieve as well as avoid a pregnancy. Understanding that intercourse or genital contact during the fertile time can result in pregnancy, couples using the natural methods must be clear regarding their family planning intention--that is, do they wish to achieve or avoid a pregnancy?
If a couple wishes to achieve pregnancy, they have intercourse during the fertile time. If a couple wishes to avoid pregnancy, they abstain from intercourse and any genital contact during the fertile time. No artificial methods are used during the fertile time. These would interfere with a women's observation of her fertility signs.
What are the benefits of using NFP?
In NFP both spouses are taught to understand the nature of fertility and work with it, either to plan a pregnancy or to avoid a pregnancy. Couples who use NFP soon learn that they have a shared responsibility for family planning. Husbands are encouraged to "tune into" their wives' cycles and both spouses are encouraged to speak openly and frankly about their sexual desires and their ideas on family size.
Other benefits include
• Low cost
• No harmful side effects
• Effectiveness for achieving, spacing, or limiting pregnancy
• Can be used throughout the reproductive life cycle
• Marriage enrichment and mutual understanding
• Appreciation for the value of children
• Fosters respect for and acceptance of the total person
• Moral acceptability
|How effective are the natural family planning methods for avoiding pregnancy?
When couples understand the methods and are motivated to follow them, NFP is up to 99% successful in spacing or limiting births.
The effectiveness of NFP depends upon the spouses' following the rules of the method according to their family planning intention (i.e., achieving or limiting pregnancy). Those who are strongly motivated to avoid pregnancy and follow the method-defined rules are very effective in meeting their goal.
Where can I learn how to use NFP?
The best way to learn NFP is from a qualified instructor-- that is, one who is certified from an NFP teacher training program. Although medical professionals are gradually learning more about NFP and becoming more supportive of patients who wish to use it, they are not often trained to teach NFP.
Find more information about the methods of NFP and local instructors under the yellow highlighted "What is Natural Family Planning" heading above on the right --->
Excerpted from United States Conference of Catholic Bishops, Washington, D.C. All rights reserved.