Grundlagen der Zyklusbeobachtung – was brauchen wir für die tägliche Beratung?

The self-monitoring of the menstrual cycle enables women to track their cycle, to determine the time of ovulation and the fertile window and to identify possible cycle disorders. It is known as natural family planning (NFP). The principles of self-observation include changes in cervical mucus and the basal body temperature. The cervical mucus is found externally on the vulva and serves as an indicator for the fertile window. Together with the temperature rise it indicates the time of ovulation. Cycle monitoring does not require regular cycles or a specific lifestyle. There are different approaches and methods of NFP, the quality and effectiveness of which vary. Cycle apps and new measurement systems have increased the use of cycle monitoring but are very often unreliable. Furthermore, luteinizing hormone (LH) kits are often overestimated and can lead to incorrect results. Gynecologists can refer women to qualified counsellors to learn the Sensiplan method, which is recommended by the German Society for Gynecological Endocrinology and Fertility Medicine (DGGEF). This has become established due to its contraceptive safety, the clearly defined methodology and the continuous scientific evaluation.