Natural fertility methods are effective and morally acceptable means of controlling fertility which also benefit marriages and women’s health. Modern methods teach couples to identify the signs of a woman’s fertile and infertile phases of the ovulation cycle, in order to avoid or try to achieve conception.
When couples understand and are motivated to follow them, modern natural fertility methods are extremely successful in spacing or limiting births. Because they are not based on the probability of fertility (like the old ‘rhythm’ or ‘calendar’ methods) but on the detection of the signs of fertility they can also be used successfully by any woman, even if she has irregular cycles, is breast feeding, or is pre-menopausal.
To learn more about Catholic teaching on fertility and natural fertility awareness.
God's Gift of Life & Love: a pastoral letter to Catholics on natural fertility methods,
Australian Catholic Bishops Commission for Pastoral Life.