Fertility Awareness-Based Methods (FABMs)
Fertility Awareness-Based Methods (FABMs) are scientific methods used to monitor and interpret biological signs of fertility (biomarkers) throughout the menstrual cycle. FABMs can be used for health monitoring, timing diagnostics and treatments in RRM, and achieving or avoiding pregnancy. A 2025 systematic review of 20,339 participants from 16 studies found FABMs, when used correctly, were associated with a success rate of over 90% for both contraceptive and conception purposes.1 FABMs encourage partner involvement, improve communication, and enhance body literacy by tracking biomarkers to determine fertility status. They also aid in identifying ovulation-related disorders such as PCOS and endometriosis. Specific methods include the Creighton Model FertilityCare System, the Billings Ovulation Method, the Sympto-Thermal Method, and the Marquette Method. Note: The Creighton Model FertilityCare System is specifically classified as an NFP method by its developers and is distinct from the FABM umbrella.2
Cited in this entry
- Fertility Awareness-Based Methods for Family Planning: A Systematic Review. https://pmc.ncbi.nlm.nih.gov/articles/PMC12270466/
- Use of fertility awareness-based methods of contraception. https://pubmed.ncbi.nlm.nih.gov/33762172/
Discussed in
Research library
- Medical Students' Knowledge of Fertility Awareness-Based Methods of Family Planning
- Fertility Awareness-Based Methods for Family Planning and Women's Health: Impact of an Online Elective
- Fertility Awareness-Based Methods for Women's Health and Family Planning
- A Mixed-Methods Assessment of Health Care Providers' Knowledge, Attitudes, and Practices Around Fertility Awareness-Based Methods in Title X Clinics in the United States
- Behavioral methods of family planning: A comparative study of efficacy and safety
This content is for educational purposes only and does not constitute medical advice. Consult an RRM clinician or healthcare provider for guidance specific to your situation.