Calendar-based contraceptive methods

Calendar-based contraceptive methods are a type of fertility awareness methods of birth control that are based on a woman's menstrual cycle. These methods, also known as natural family planning or periodic abstinence, involve avoiding sexual intercourse on certain days of a woman's menstrual cycle.

Overview

Calendar-based methods are based on the observation that there are fertile and infertile phases in a woman's menstrual cycle. The fertile phase is the time during which a woman can conceive, and it usually lasts for several days around the time of ovulation. The infertile phase is the rest of the cycle when conception is unlikely to occur.

There are several different calendar-based methods, including the Rhythm Method, the Standard Days Method, and the Symptothermal Method. These methods require a woman to track her menstrual cycles and identify the days when she is likely to be fertile.

Effectiveness

The effectiveness of calendar-based methods varies widely, depending on the specific method used and how accurately it is followed. According to the World Health Organization, when used correctly and consistently, calendar-based methods can be up to 95% effective at preventing pregnancy. However, the typical use effectiveness rate, which takes into account user error and inconsistent use, is much lower.

Advantages and Disadvantages

Advantages of calendar-based methods include that they are natural, non-invasive, and free of side effects. They can also help a woman to better understand her body and her menstrual cycle.

Disadvantages include that they require a high level of commitment and discipline, as well as a regular menstrual cycle. They also do not protect against sexually transmitted infections.

See Also

• Birth control
• Fertility awareness
• Natural family planning
• Rhythm Method
• Standard Days Method
• Symptothermal Method