Sánchez-Méndez JI et al., 2025·Front Reprod Health·
Open Access
Assisted reproductive technologies (ART) are widely used to address infertility; however, they are costly, associated with medical risks, and often yield suboptimal clinical outcomes. Natural Procreative Technology, also known as NaProTechnology (NPT), provides a systematic and integrative approach to infertility by thoroughly identifying and treating underlying medical conditions to restore the couple's natural fertility potential. Despite its promise, real-world data on NPT effectiveness remain limited. The objective of this study is to evaluate the take-home baby rate in a large population of infertile couples treated with NPT and to synthesize findings from previously published studies. A retrospective cohort study was conducted involving 1,310 infertile couples treated at a specialized fertility clinic in Spain over a 5-year period. Participants presented with primary or secondary infertility or recurrent pregnancy loss. Clinical data, diagnoses, and outcomes were analyzed, including surgical interventions and treatment duration. The mean age of women and men was 35.0 (SD 4.4) and 36.9 (SD 5.3) years, respectively. Primary infertility was the most common subtype (73.5%), the median infertility duration was 24 months, and prior ART attempts were recorded in 27.5% of couples. Mean number of diagnoses per couple was 2.5 (SD 1.3). The crude take-home baby rate was 35.3% (N = 463). Independent predictors of successful take-home baby included female age, recurrent pregnancy loss as the reason for consultation, duration of infertility, and the presence of endometriosis, hormonal dysfunction, male factor, and endometrial disorders as diagnoses. Considering a median duration of NPT of 10.9 months (range 8.1-17.0), the adjusted cumulative take-home baby rate was 62.1%. Rates varied significantly by female age, with higher success observed in younger women: 83.7% at 18-30 years, 53.3% at 36-40 years, and 24.4% over 40 years. A sensitivity analysis was performed to assess the impact of dropout assumptions on cumulative pregnancy rates. Nearly one-third of patients underwent surgery, most commonly hysteroscopy and/or laparoscopy. In this cohort, NPT was associated with a notably high take-home baby rate in an infertile population with unfavorable prognostic factors, including advanced maternal age, prolonged duration of infertility, or previous failed attempts at conventional ART procedures.
History of the Discipline · Origins of Restorative Practice
Boyle P, 2025·J Restorative Reprod Med·
Open Access
Recently, editorials have been published in reproductive medical journals that have misunderstood and misrepresented the origin and meaning of “restorative reproductive medicine” (RRM).1,2 This term was first used in 2000 when a group of physicians established the International Institute for Restorative Reproductive Medicine (IIRRM, iirrm.org ). I am a founding member and am currently president of the IIRRM.
The IIRRM was founded as a secular, not a faith-based organization. We adhere to time-honoured medical principles to understand and treat underlying factors responsible for infertility. We are always seeking to improve our diagnosis and treatment of those factors, the training of clinicians who offer RRM, and the quality of clinical practice of RRM. We believe that in the clinical realm, in vitro fertilization (IVF) is often offered quickly without sufficient efforts first made to help couples conceive naturally.
IVF was originally developed to treat patients with bilateral tubal occlusion who could not conceive through sexual intercourse. Most patients who undergo IVF today do not have blocked fallopian tubes. Intracytoplasmic Sperm Injection (ICSI) was developed for patients with severe male factor infertility. Most patients who undergo ICSI today do not have severe male factor infertility. Remarkably, the most recent Cochrane review of IVF indicates ongoing uncertainty about whether IVF improves the live birth rate compared to expectant management for previously untreated couples with “unexplained” subfertility.3
I am an active RRM clinician since 1998 and I have treated thousands of couples. When patients present for fertility treatment, I do not ask them what religion, political view, or philosophy they support, because that is irrelevant to people who want a solution for their infertility. If they have a condition that is better treated by IVF, I tell them that at the first appointment. If natural conception is possible with RRM, I explain what is involved and outline the treatment process which can take up to 12 cycles (most often less) to reach a healthy ongoing pregnancy, or a full course of treatment.
RRM honours patient autonomy. We do not seek to prohibit patient access to IVF. Patients seek us out. RRM expands their choices and options. Many of my patients were previously seen in fertility clinics that offer IVF. Patients repeatedly tell me they did not receive the same depth of investigation or non-IVF treatment in the IVF clinics. I recently received these comments from patients, “RRM empowered us in our fertility journey. It provided a personalised approach. We are so grateful.” And “even if we didn’t conceive, we’d never regret trying RRM as my health improved immeasurably…”
The World Health Organization states that “Infertility is a disease of the male or female reproductive system defined by the failure to achieve a pregnancy after 12 months or more of regular unprotected sexual intercourse”.4 As RRM physicians, we respectfully suggest a slight but essential alteration: “Infertility is a medical condition defined by failure to achieve a pregnancy after 12 months or more of regular sexual intercourse without contraception, which is caused by one or more underlying diseases and conditions involving the male or female reproductive system.” This definition indicates that infertility is not a singular condition to be treated solely by treatments to generate a pregnancy and birth. Rather, it is “a canary in the coal mine” for human health, indicating the need to identify and address underlying health concerns. 5,6
As RRM physicians and clinicians we have training and backgrounds that allow us to treat infertility patients with a focus on treatments and approaches that restore and optimize natural function. The specialty of reproductive endocrinology and infertility has extensive training with a particular focus on IVF and treatments to improve the success of IVF. But we can and should be in agreement to offer patients evidence-based information and treatments that meet the needs and preferences of patients.
Further research is needed and is currently ongoing on patient-relevant questions, such as: How does an RRM evaluation differ in process and results from a fertility evaluation before initiating IVF? How do the outcomes of RRM and IVF compare on multiple levels including live birth rates, premature delivery, patient satisfaction, health improvement, and repeat successful births?7
For the sake of our patients with infertility, let us strive to be objective about the scientific facts, and meet all patients with respect. Surely as we challenge and learn from one another and strive for excellence, the patients will be the ultimate beneficiaries.
Arraztoa JA, 2025·J Restorative Reprod Med·
Open Access
In 1972, a seminal article was published demonstrating that women, adequately trained, could detect the approach of ovulation in the fertile window of their menstrual cycle. It was demonstrated that the symptoms perceived by women at the vulva correlate closely with changes in steroid hormone levels associated with folliculogenesis and the luteal phase. The fertility charting performed by women trained to recognize vulvar symptoms associated with hormonal changes serves as an instrument for detecting potential pathologies and monitoring the effects of treatment These findings established the biological foundations of a tool of fertility awareness tracking that has facilitated the development of restorative reproductive medicine (RRM): an approach that can be applied to identify and treat the underlying causes of infertility/subfertility.
Several core characteristics—or foundational pillars—of the RRM approach to fertility can be identified. These include: a commitment to respecting healthy physiological processes, comprehensive health care for both the couple and the potential embryo, and the provision of education and continuous support throughout the therapeutic process.
This commentary aims to elucidate the interplay of these foundational pillars by drawing upon evidence from peer-reviewed biomedical literature. Finally, the challenges faced by RRM in strengthening its scientific foundations, engaging with the broader scientific community, and promoting the dissemination of this approach are described.
Stanford JB, 2025·J Restorative Reprod Med·
Open Access
Welcome to the Journal of Restorative Reproductive Medicine, the official journal of the International Institute for Restorative Reproductive Medicine! JRRM is a peer-reviewed, open-access medical journal for clinicians, scientists, professionals, and patients. Our vision is that JRRM will disseminate and promote evidence-based information to support and restore human fertility and reproductive health. Restorative reproductive medicine can be defined as approaches to systematically identify and treat underlying health conditions contributing to reproductive dysfunction and suboptimal reproductive health.1,2 In the case of subfertility, the aim is to restore the ability to have a healthy live birth, starting with natural intercourse in the fertile window.3 Consistent with this, JRRM approaches subfertility and recurrent miscarriage as related chronic conditions with many possible underlying contributors, including medical conditions, lifestyle, and environmental factors. The same framework applies to other conditions affected by or affecting human reproductive health, which is intertwined with somatic health.4-6 JRRM is particularly interested in articles from clinical medicine, physiology, epidemiology, data science, social sciences, and public health. Relevant clinical domains include, but are not limited to gynecology, andrology, endocrinology, infertility, midwifery, primary care, fertility cycle tracking. Occasionally, basic science or animal studies might be considered for publication, if they directly relate to the vision of JRRM. Articles not considered relevant to this journal include those focusing on the humanities or medical ethics, or research that does not focus on a restorative approach to human fertility and reproductive health. JRRM builds on a long history of tracking ovulation and the fertile window with fertility biomarkers, originally with the aim of natural regulation of fertility.7-10 In the past few decades, clinicians and investigators have explored the power and potential of applying these tools to medical evaluation and treatment.11-13 JRRM seeks to highlight and accelerate the development of scientific evidence linking fertility biomarkers and health. There are a growing number of high-quality journals related to human reproduction. JRRM focuses uniquely on restorative approaches to investigation and treatment, which often get less attention. There is a wide variety of motivations for the interest and engagement of patients and professionals in restorative reproductive medicine: preferences for less invasive natural approaches, commitments to patient empowerment, seeking answers for what is wrong, concerns about access and quality, reducing costs, and ethical and religious commitments.14-16 We all can benefit from a diversity of perspectives in the service of patients.17 All motivations are welcome at JRRM, as we focus together on a restorative approach to fertility and reproductive health
Natural Procreative Technology (NaProTechnology) is a system of management of infertility and other reproductive health issues which requires the application of a woman’s observation and record of key events throughout her menstrual cycle. The study assessed the knowledge, awareness, and perception of NaProTechnology as well as the effect of an educational intervention among pharmacy undergraduate students at University of Nigeria, Nsukka. It was a cross-sectional, questionnaire-based study. The ethical approval was obtained from the research ethics committee of the Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka. At baseline, the knowledge, awareness and perception of the students were assessed. Followed by the administration of an educational video on NaProTechnology. Then a post intervention survey was done to assess the effect of the educational intervention. Key finding: s
There were 410 and 350 students in the preand post-intervention surveys respectively with relatively equal number of males and females. Majority were between 18 and 29 years old. Less than 5% were married while the highest proportion of the respondents were from 300 level The knowledge, awareness, and positive perception of NaProTechnology among the pharmacy students prior to intervention were poor but improved markedly post intervention (P < 0.001).
A video intervention was effective in improving the short-term knowledge, awareness and positive perception of NaProTechnology among pharmacy students. Key message: s
What is already known on this topic?
Natural Procreative Technology (NaProTechnology) is a system of management of infertility based on the observation and record of fertility biomarkers by a woman. What this study add: s?
The level of knowledge, awareness, and positive perception of NaProTechnology among the pharmacy undergraduates students were poor prior to a video intervention but improved markedly afterwards
How this study might affect research, practice or policy?
This study would lead to the public health system approach of informing, educating and communicating NaProTechnology to pharmacy students to achieve long-term effects by using well-designed courses and curriculum implementation.
Restorative Care and Assisted Reproduction · Outcome Comparisons
La progresiva medicalización de la infertilidad en las últimas tres décadas se corresponde con una creciente difusión de las Tecnologías de Reproducción Asistida (TRA), que han dejado en la sombra, casi por completo, otros enfoques más fisiológicos del tratamiento de la infertilidad, que tienen menos riesgos, son más económicos y, a la vez, igualmente efectivos. Este trabajo presenta un enfoque sistemático e integrado: la NaProTecnología (NPT), que tiene como objetivo optimizar las condiciones fisiológicas en cada ciclo menstrual, para permitir, de esta forma, una concepción por métodos naturales. Este método se postula como una mejor solución para el tratamiento de la infertilidad, desde un punto de vista que no sólo es más ético, sino que, además, es compatible con otros puntos de vistas religiosos, médicos, sociales, legales y ambientales. Los gobiernos deberían promover y financiar la NPT y, al mismo tiempo, las sociedades médicas y científicas deberían diseñar estudios para comparar de una manera justa la tasa de éxito, los costos y las complicaciones de la NPT en contraposición al método TRA tradicional.
Mankato Family Medicine Residency, University of Minnesota, Mankato, MN The corresponding author is Robert D. Jeske; [email protected]. The authors declare no conflicts of interest.
Stanford JB et al., 2021·BMC Pregnancy Childbirth·
Open Access
Restorative reproductive medicine (RRM) seeks to identify and correct underlying causes and factors contributing to infertility and reproductive dysfunction. Many components of RRM are highly suitable for primary care practice. We studied the outcomes amongst couples who received restorative reproductive medicine treatment for infertility in a primary care setting. Two family physicians in Massachusetts trained in a systematic approach to RRM (natural procreative technology, or NaProTechnology) treated couples with infertility. We retrospectively reviewed the characteristics, diagnoses, treatments, and outcomes for all couples treated during the years 1989 to 2014. We compared pregnancy and live birth by clinical characteristics using Kaplan-Meier analysis. We employed the Fleming-Harrington weighted Renyi test or the logrank test to compare the cumulative proportion with pregnancy or with live birth. Among 370 couples beginning treatment for infertility, the mean age was 34.8 years, the mean prior time trying to conceive was 2.7 years, and 27% had a prior live birth. The mean number of diagnoses per couple was 4.9. Treatment components included fertility tracking with the Creighton Model FertilityCare System (80%); medications to enhance cervical mucus production (81%), to stimulate ovulation (62%), or to support the luteal phase (75%); and referral to female laparoscopy by a surgeon specializing in endometriosis (46%). The cumulative live birth rate at 2 years was 29% overall; this was significantly higher for women under age 35 (34%), and for women with body mass index < 25 (40%). There were 2 sets of twins and no higher-order multiple gestations. Of the 63 births with data available, 58 (92%) occurred at term. Family physicians can provide a RRM approach for infertility to identify underlying causes and promote healthy term live births. Younger women and women with body mass index < 25 are more likely to have a live birth.
NaProTECHNOLOGY – a chance for offspring or fraud? In the media space in Poland, you can meet the concept of Naprotechnology as an alternative to the in vitro procedure. Often, many myths and untruths appear in the discussion regarding this method of treatment. Naprotechnology is a new look at the health of women and men created by prof. Thomas Hilgers. It takes into account natural fertility biomarkers thanks to observation with the Creighton Model based on the female mucus. At every stage of diagnosis and treatment, Naprotechnology respects human life from the moment of conception and the mutual dignity of the spouses. It also does not use assisted reproductive procedures for ethical reasons. Naprotechnology is part of the broader scientific discipline of restorative medicine in infertility. Thanks to the accurate diagnosis and observation of the cycle, it is possible to correctly diagnose the cause of infertility. A proper diagnosis is the starting point for the implementation of specialized pharmacological and surgical treatment for both women and men. Properly used Naprotechnology and restorative medicine are highly effective in treating marital infertility. W przestrzeni medialnej w Polsce można spotkać pojęcie Naprotechnologii jako alternatywy dla procedury in vitro. Często w dyskusji pojawia się wiele mitów i nieprawdy dotyczących takiego sposobu leczenia. Naprotechnologia, stworzona przez prof. Thomasa Hilgersa, jest nowym spojrzeniem na zdrowie kobiety i mężczyzny. Uwzględnia ona naturalne biomarkery płodności dzięki obserwacji za pomocą Modelu Creighton bazującego na kobiecym śluzie. Na każdym etapie diagnostyki i leczenia Naprotechnologia szanuje ludzkie życie od samego poczęcia oraz wzajemną godność małżonków. Nie stosuje ona też procedur wspomaganego rozrodu z powodów etycznych. Naprotechnologia jest częścią szerszej dyscypliny naukowej, jaką jest przyczynowe leczenie niepłodności. Dzięki dokładnej diagnostyce i obserwacji cyklu możliwe jest postawienie prawidłowej diagnozy dotyczącej przyczyny niepłodności. Właściwa diagnoza jest punktem wyjścia dla wdrożenia specjalistycznego leczenia farmakologicznego i chirurgicznego zarówno wobec kobiety, jak i mężczyzny. Prawidłowo stosowana Naprotechnologia i przyczynowe leczenie niepłodności cechują się wysoką skutecznością leczenia niepłodności małżeńskiej.
A special course on Marriage, the Family and Human Sexuality was established at Kenrick-Glennon Seminary in St. Louis so as to assist the seminarians in their better understanding of the Church's teaching relative to natural methods of family planning and women's health care. This article compares the response at the beginning of this three-credit semester course to the same seven-item questionnaire given at the conclusion of the course. The preand postcourse scores were calculated for each of the questions. The scores obtained after the course were all significantly higher than they were before the course with p values ranging from 0.01 to <0.0001. Four of the items showed marked improvement including an understanding of the church's teaching related to natural methods, current methods of natural family planning, the impact of a natural method on a couple's marriage, and also the impact of a natural method on family life. Statistically significant improvement was also seen in their understanding of the topic of natural family planning and the Creighton Model System and its relevance toward the seminarian's vocation, the use of the methods to either achieve or avoid pregnancy, and how contraception and abortion are linked. In these last three items, the level of statistical significance was quite high, although not as high as the other four items. There were 104 seminarians over an eight-year period of time, who provided answers to these questions, both before and after the course. This course was modeled after a course that was initiated at the Pope Paul VI Institute for the Study of Human Reproduction, which was for priests, seminarians, and Catholic leaders, titled Love & Life Unlimited. NONTECHNICAL This is an evaluation of a ten-point, seven-question questionnaire that was utilized at the beginning of a course at Kenrick Seminary in Marriage, Sexuality, Creighton Model and NaProTECHNOLOGY. The same questionnaire was given to the students at the beginning of the course and then two to three months later at the conclusion of the three-credit course. The results show that there is a significant improvement in the seminarians' knowledge and general attitude about natural methods of family planning and suggests that such courses would be beneficial to establish in seminaries throughout the country.
Boyle PC et al., 2018·Front Med (Lausanne)·
Open Access
To determine the live birth rate for patients who chose to undergo treatment with Restorative Reproductive Medicine (RRM) after previous IVF (includes ICSI). To look at birth outcomes with RRM after IVF, particularly rates of twin and higher order pregnancies, premature birth, low birth weight, and potential cost savings achieved with RRM. Two outpatient clinics in Ireland providing advanced RRM treatment of infertility. All patients presenting between January 2004 and January 2010, with a history of infertility and previous IVF treatment were included if they proceeded beyond the initial consultation and began treatment. Main outcome is live birth per couple calculated using life table analysis. 403 patients met the study criteria, among which 74 had a subsequent live birth. These women had significant negative predictive characteristics for healthy live birth including: advanced reproductive age (average 37.2 years), an average of 5.8 years of infertility with 2.1 (range 1-9) previous IVF attempts, with only 5% having previously had a live birth from IVF. Despite these undesirable prognostic indicators, the overall RRM live birth rate was 32.1% (crude 18.4%). Women aged 35-38 had a live birth rate of 37.5% (crude 23.6%) and older women over 40 had a live birth rate of 27.4% (crude 16.0%). The average birth weight was 3374g (7lb 7oz) with 92% being born at 37+ weeks and no very low birth weight babies. There was only one twin pregnancy in the study population; the potential health care savings for avoidable multiple pregnancies in these patients was estimated at £205 672 (USD$284 915). Patients who have already tried IVF can achieve comparable live birth outcomes with RRM compared to another cycle of IVF. RRM has a low risk of twin or multiple births, and very good neonatal outcomes with a potential cost savings to the health care system.
NaProTECHNOLOGY is a new field of medicine specializing in the promotion of human procreation. Its foundation is a teaching system called the Creighton Model Fertility Care System. It is based on the ability to observe and record biological biomarkers, enabling spouses to recognize and understand the naturally occurring cycle of fertility and infertility. The spouses can use their acquired knowledge both for achiving pregnancy and avoiding pregnancy. The system also enables them to broaden their knowledge to better understand sexuality and deepen their mutual love. It also plays an important role in diagnosing and treating reproductive health according to the natural cycle of women. NaProTECHNOLOGY is involved in building a "new culture of life" through integral concern for human fertility by restoring natural procreation and respecting the principles of responsible parenthood.
Flores R, 2016·Scholars Academic Journal of Biosciences·
The latest retrievable data about infertility in the Philippines was made available to the public by Merck Serono, a private pharmaceutical company who commissioned the survey in 2011. The survey was conducted by Synovate in 100 participating households in the Philippines, particularly in key cities located in Luzon, Visayas and Mindanao. The survey results revealed that one out of ten Filipino couples are suffering from infertility. And these couples are not seeking treatment due to the following reasons: (1) financial constraints; (2) time constraints; and (3) the patient’s belief. Of all these, financial constraints, at 86%, is the primary reason why infertile couples are not seeking treatment. In addition to this data, the Chief of The Medical City’s Reproductive Medicine, Infertility and Gynecologic Endoscopy, Dr. Marc Anthony Ancheta, further reveals that “some 35 to 40% of a couple’s inablity to conceive a child are due to female factors; while the other 35 to 40% could be attributed to male factors.” While male factor infertility is also deserving of proper attention, it is the female factor infertility that should receive greater attention and focus in terms of treatment. Why? Because, primarily, the female’s reproductive cycle is very complex and would need months and/or years to partially identify the underlying reason/s of infertility; and second, the female’s ability to conceive naturally will fall by 50% when she reached the age of 35. Therefore, there should be urgency in treating female factor infertility in an efficient, ethical and affordable way. And these conditions can be achieved by the use of NaPro Technology.
As the editor of the Anscombe Bioethics Centre's new book Fertility and Gender: Issues in Reproductive and Sexual Ethics (Watt 2011), I was delighted to read Sr. Renee Mirkes’ generous review in th...
Restorative Care and Assisted Reproduction · Outcome Comparisons
Dowbór-Dzwonka A et al., 2012·Zdr Publ·
Open Access
Infertility is a significant and constantly increasing individual and social problem. It is estimated that at present it affects approx. 15 to 20 percent of couples. Inability to conceive a child elicits a range of unfavourable implications in the scope of emotional experiences, in the partner’s relationship and in a broader social perspective. Making a decision on undergoing diagnostics and infertility treatment is a difficult and often postponed moment for many couples. This is an expression of the escape model of dealing with a situation that threatens with a fall of self-esteem. However, if a couple reacts in a task-oriented way and participates in the diagnostic and therapeutic procedure, new doubts appear connected with the medical, psychological, social and ethical sphere. Infertility treatment sometimes prompts fear connected with the stripping of intimacy, loss of control over one’s body, possible complications and unsuccessful therapy. This article is an analysis of the medical and the other aspects of struggling with infertility with reference to two extremely different methods of solving this NaProTechnology as a process of assisting natural procreation and assisted reproductive techniques with a special consideration of in vitro fertilization.
The paper presents the main concepts of NaProTECHNOLOGY. Such problems as family planning effectiveness, targeted hormonal assessment of the menstrual cycle, ovarian hormone and target organ dysfunction, disorders of human ovulation, cooperative progesterone replacement therapy, premenstrual syndrome, postpartum depression, unusual bleeding, infertility and antiadhesion therapy are discussed.
Boyle PC et al., 2011·Biomedicina (Sveikatos Mokslai/Health Sciences)·
Infertility is usually a consequence of multiple chronic conditions rather than a single acute condition. We propose that it is erroneous to apply acute medical interventions to a condition that is chronic in nature.
Retrospective analysis of 3 case studies which demonstrate the multifactorial and chronic nature of infertility that were previously managed unsuccessfully with acute intervention using IVF (in Vitro Fertilisation) or ART (Assisted Reproductive Technology).
Demonstration of the multifactorial approach and 3 successful singleton live births using NPT (Natural Procreative Technology or NaProTechnology). Infertility can be treated successfully with a multifactorial approach which takes into account the chronic nature of infertility and targets treatment to manage multiple factors responsible for the condition. Infertility is not a diagnosis but is often the expression of several underlying ill health conditions which if diagnosed and treated correctly will result in restoration of normal reproductive function. Physicians ought to consider broader diagnostic possibilities in their evaluation of infertile couples. A multifactorial treatment strategy for the chronic condition of infertility may be more effective than the widespread acute strategy employed by ART. Further study is required to investigate this possibility in more detail. Future studies looking at NPT and ART outcomes must be cohort studies comparing populations with similar patient characteristics.
The paper presents the main concepts of NaProTECHNOLOGY. Such problems as family planning effectiveness, targeted hormonal assessment of the menstrual cycle, ovarian hormone and target organ dysfucntion, disorders of human ovulation, cooperative progesterone replacement therapy, premustrual syndrome, postpartum depression, unusual bleeding, infertility and antiadhesion therapy are discussed.
Dr. Thomas W. Hilgers draws on decades of medical experience to provide educational and revolutionary insights into the world of women's health. The NaPro Technology Revolution provides real solutions to real problems such as infertility, repetitive miscarriage, menstrual cramps, postpartum depression, PMS, prematurity prevention, ovarian cysts, hormonal abnormalities, irregular/abnormal bleeding, chronic discharges, polycystic ovarian disease, and family planning. Hilgers sheds light on abnormal ovarian function, an issue that millions of women unknowingly suffer from. His methods have proven to assist infertile couples nearly three times more successfully than those who use In Vitro Fertilization, without the dangers of early abortions, frozen embryos, or high rates of multiple pregnancy. The NaProTechnology Prematurity Prevention Program cuts the rate from the national 12.7% to 7%. The NaPro Technology Revolution discusses what every woman has a right to know about her body, her health, and her future!
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
The CREIGHTON MODEL FertilityCare System (CrMS) rests on a decades-long body of research demonstrating that cervical mucus functions as a physiologically regulated biological valve, opening predictably at the periovulatory estrogen rise and closing in the post-Peak phase. Chapter 15 of Hilgers (2004) synthesizes hormonal, ultrasound, cytologic, and biophysical evidence to establish that a woman's external observation of her Peak Day reliably identifies the fertile window, and documents the system's effectiveness data for both achieving and avoiding pregnancy across a five-study meta-analysis of nearly 1,900 couples.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
This 2004 textbook chapter by Thomas W. Hilgers outlines the structure and content of the formal introductory session used to enroll couples in the Creighton Model FertilityCare System (CrMS). It covers the biological foundation of fertility charting, the role of cervical mucus as a biomarker of the reproductive cycle, and the educational framework designed to train couples in systematic, real-time cycle observation.
The Care Team · Coordinating With Conventional Care
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Nursing within the NaProTECHNOLOGY practice encompasses preoperative preparation, intraoperative assistance, postoperative monitoring, hormone administration protocols, and patient education on cycle-based treatment timing. Nurses fluent in CrMS charting language and NaProTECHNOLOGY biomarker systems function as clinical integrators, ensuring that laboratory and treatment protocols are executed in alignment with the individualized menstrual cycle data driving each patient's care plan.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Medical protocols in NaProTECHNOLOGY are cycle-phase-targeted regimens — covering ovulation induction, luteal phase hormonal support, hyperprolactinemia management, thyroid optimization, and pre-conceptual supplementation — derived from the biomarker-defined diagnosis rather than empirical stimulation. Consolidating these protocols in a single reference enables practitioners to apply evidence-based, individualized treatment sequences that address root hormonal pathology while supporting natural conception.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
A comprehensive, thematically organized compendium of citations documents the evidentiary foundations for every clinical protocol and outcome claim presented across the preceding 88 chapters, spanning foundational cervical mucus research through contemporary reproductive endocrinology and surgical outcomes literature. Consolidating this reference architecture in a dedicated chapter provides practitioners and researchers a structured pathway to primary literature, reinforcing that NaProTECHNOLOGY is grounded in a reproducible, peer-reviewed evidence base rather than institutional convention.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Hilgers articulates a programmatic vision for the global expansion of NaProTECHNOLOGY through the continued development of FertilityCare Centers International, advanced medical consultant training, and integration of longitudinal hormonal research into evolving clinical protocols. Establishing a roadmap for research priorities, practitioner education infrastructure, and broader medical acceptance positions NaProTECHNOLOGY as a scalable, restorative alternative to the prevailing ART-centered paradigm in reproductive medicine.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Surgical NaProTECHNOLOGY is defined as a cooperative surgical discipline that corrects reproductive pathology identified through CrMS monitoring and targeted diagnostic workup, employing microsurgical and laser techniques that maximize tissue preservation and minimize adhesion formation. The philosophical and technical distinctions from conventional gynecologic surgery are established, emphasizing restorative intent and anatomical precision as core principles.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Cumulative pregnancy and live birth data from the Pope Paul VI Institute document NaProTECHNOLOGY outcomes across diagnostic categories including unexplained infertility, endometriosis, PCOD, and tubal disease, with multi-year follow-up that captures pregnancies occurring after continued treatment — a metric not captured in per-cycle ART statistics. These outcomes provide the evidence base for positioning NaProTECHNOLOGY as a first-line rather than last-resort reproductive medicine strategy.
Hilgers TW et al., 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
The FertilityCare Practitioner (FCP) is the trained educator and coach who teaches the Creighton Model FertilityCare System to clients, standardizes charting methodology, and serves as the primary data interface between the patient and the NaProTECHNOLOGY physician. Accurate, consistent chart data from FCPs directly determines the quality of biomarker interpretation, targeted intervention timing, and longitudinal outcome assessment throughout medical and surgical care.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
NaProTECHNOLOGY (Natural Procreative Technology) is defined as a women's health science that monitors and cooperates with the menstrual and fertility cycles to identify, evaluate, and treat gynecologic and reproductive disorders at their root cause. Unlike suppressive approaches such as hormonal contraception or ART, NaProTECHNOLOGY maintains procreative potential and treats underlying pathology while preserving the human ecology of reproduction.
The Care Team · Coordinating With Conventional Care
Hilgers TW et al., 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Family physicians trained in NaProTECHNOLOGY serve as primary coordinators of medical management — prescribing targeted hormone support, monitoring biomarker trends, and triaging surgical referrals — within a collaborative care model. Their longitudinal relationship with patients and ability to integrate reproductive medicine into whole-person primary care is a structural advantage of the NaProTECHNOLOGY delivery system over specialist-only models.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
The Creighton Model FertilityCare System (CrMS) is introduced as a standardized, scientifically grounded method for observing and recording cervical mucus biomarkers and bleeding patterns across the menstrual cycle. Its development from earlier natural family planning methods into a fully systematized fertility monitoring tool is traced, establishing the CrMS as the observational substrate for all subsequent NaProTECHNOLOGY medical applications.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Clinical and instructional decision trees guide practitioners through the interpretation of chart findings and the selection of appropriate responses — ranging from continued observation to medical referral — based on pattern recognition and established CrMS criteria. Systematic decision-making protocols reduce practitioner variability, support evidence-based care, and define the threshold at which observed abnormalities warrant further NaProTECHNOLOGY medical evaluation.
Hilgers TW et al., 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Family physicians are optimally positioned to introduce NaProTECHNOLOGY to patients presenting with infertility, irregular cycles, or recurrent pregnancy loss during routine primary care, enabling early evaluation and restorative treatment before referral to subspecialists. Familiarity with CrMS charting interpretation, basic hormone panels timed to identified cycle phases, and the range of treatable NaPro diagnoses allows the family physician to substantially expand reproductive care at the primary care level.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
NaProTECHNOLOGY applies the standardized biomarkers of the Creighton Model FertilityCare System to identify the specific pathophysiological causes of infertility in each couple, then directs targeted medical or surgical intervention against those causes. Published pregnancy rates demonstrate outcomes comparable to or exceeding IVF in many diagnostic categories, without the ethical, financial, or obstetric risks associated with assisted reproduction.
*We are offering you a comprehensive look into women's health. By understanding natural methods and the science behind the menstrual period, the fundamental elements of conception and infertility can be easily understood.*
Creighton Model charting & scientific/physiological foundations
Creighton model data, and how it relates to the NaProTechnology application
Treatment approaches of NaProTechnology & Restorative Reproductive Medicine in gynecology and infertility
Benefits of RRM vs standard Conditions and Treatments
Boyle P et al., 2025·J Restorative Reprod Med·
Open Access
Restorative reproductive medicine (RRM) is an emerging approach that can be used to treat infertility. Our goal was to compare RRM to IVF outcomes in 2019.
We conducted a retrospective clinic-based analysis and referenced it against publicly available data from IVF registries, as published by the Centers for Disease Control and Prevention (CDC) or the Society for Assisted Reproductive Technology (SART) in the USA, and the Human Fertilization and Embryology Authority (HFEA), in the UK. Data from 2019 was collected from routine medical records following treatment at one clinic in Dublin, Ireland during 2019. We defined the demographics, diagnoses, and treatments and then calculated the crude percentages of conception, live birth, multiple pregnancy, prematurity, and low birth weight. These results were benchmarked against data reported in IVF databases. 249 couples had at least one RRM consultation, 187 committed to the RRM treatment program and met the inclusion criteria. The average female age for all included patients was 36.4 years and couples were trying to conceive for a mean of 32.2 months. Of the 187 patients/couples who underwent treatment, 28% had a previous live birth, 30% had a previous miscarriage, and 42% had never conceived;19% (35/187) had previously had IVF, 2.3 + 1.6 IVF cycles per couple. Of the 187 couples, 52% (98/187) conceived, 41% (77/187) had a documented live birth. There were 75 singletons and 2 sets of twins, producing 79 babies. Time to conception for live birth patients averaged 12 + 8 months. The average birth weight was 3422g (7lb 9oz) and average weeks’ gestation at delivery was 39 + 1.5 weeks. 4.0% (3/75) of singleton babies were premature (33-37 weeks) and none were very premature (< 32 weeks). 5.3% (4/75) of singleton babies had low birth weight (< 2,500g). When we compared births across age groups, the RRM percentages with live birth were comparable to those in a single cycle of IVF with multiple subsequent embryo transfers, and greater than a single cycle of IVF with a single embryo transfer. Furthermore, RRM babies had fewer multiple pregnancies, and singleton RRM pregnancies had less than half as many premature deliveries compared to IVF, (6.5% RRM all pregnancies or 4.0% RRM, singleton pregnancies vs 14.4% SART, all pregnancies or 11.8% CDC, singleton pregnancies). 74% (26/35) of couples who remained in contact with us and tried for another pregnancy had a repeat successful live birth. In our clinic, a comprehensive RRM assessment and treatment followed by up to 12 optimal cycles of timed intercourse resulted in a 41% live birth rate (crude rate). We propose that using RRM may improve a couple’s chance of having a healthy pregnancy and reduce the demand for IVF. Furthermore, RRM reduces the risk of multiple pregnancy, low birth weight and premature delivery compared to IVF. The majority of couples who sought a second live birth were successful.
Limitations and Future directions: This is a retrospective analysis with a small number of RRM patients, compared to large IVF databases of patients using one cycle of IVF, including all transfers made from the IVF retrieval. While useful for benchmarking, conclusions are limited by sample size, and the lack of relevant prognostic data (other than female age) for the IVF patients. Larger prospective studies with full prognostic data are needed to make a proper comparison of RRM and IVF outcomes.
Knowledge of the fertile and infertile phases of the menstrual cycle can be applied to conceive or to avoid pregnancy. Fertility intentions and sexual behaviors during the fertile time may influence whether and when pregnancy occurs. The Creighton Model FertilityCare System (CrMS) is a specific system of fertility appreciation used to conceive or to avoid pregnancy. The objective of this paper is to report intentions, behaviors, and pregnancy rates during use of the CrMS among couples who initially intended to avoid pregnancy.Data and methodsWe analyzed a prospective cohort study conducted in 17 CrMS centers across the USA and Canada, following 296 couples for up to one year after onset of initial use of the CrMS to avoid pregnancy. Baseline data included demographics, motivations, and pregnancy intentions for each partner. Couples contributed 2894 menstrual cycles, most of which had data collected (by questionnaires and daily diary) on cycle-specific pregnancy intentions, days of potential fertility, and fertility behaviors. Pregnancies were prospectively actively ascertained. We found a high concordance (91%) in cycle pregnancy intentions between partners. However, 44% of cycles with strong intentions to avoid pregnancy included intercourse on potentially fertile days or days of undetermined fertility status. Across all sensitivity scenarios, cumulative 13-cycle pregnancy rates with cycle intention to conceive ranged from 88.0% to 89.8%, and cumulative 13-cycle pregnancy rates with cycle intention to avoid ranged from 29.1% to 35.3%. In multivariate analysis, baseline motivations and intentions for pregnancy within 2 years were strongly correlated with the likelihood of pregnancy, more so than cycle intentions. The findings suggest that in some populations using natural family planning, baseline motivations and intentions may be more strongly related to pregnancy rates than cycle intentions. Our findings also highlight essential elements for evaluating correct use, including complete recording of intercourse and its timing.
Bulletti FM et al., 2025·Clin Med�Insights�Reprod�Health·
Open Access
Infertility affects around 17.5% of reproductive-aged individuals worldwide, posing significant personal and public health challenges. Although Medically Assisted Reproduction and Assisted Reproductive Technology (ART; e.g., in vitro fertilization) have advanced outcomes, many couples fail to conceive due to unaddressed pelvic, uterine, or systemic factors. We aim to (1) define the current usage of Restorative Reproduction Medicine (RRM) in clinical practice, (2) compare RRM outcomes with conventional ART, and (3) propose an integrated model of RRM plus ART for optimal fertility care.
A systematic review following PRISMA guidelines was conducted (INPLASY registration no. INPLASY2024110069). Data sources and We searched PubMed, Scopus, and Web of Science (January 1995–October 2024), combining terms such as “restorative reproductive medicine,” “intrauterine adhesions,” “myomas,” “polyps,” “hydrosalpinx,” “endometritis,” “BMI,” “thyroid dysfunction,” “microbiome,” and “assisted reproductive technology.” Inclusion criteria: studies on uterine/systemic factors affecting infertility, focusing on surgical/pharmacological RRM interventions and ART limitations. Exclusion criteria: male-only infertility, case reports, narrative reviews, non-English publications. Quality assessment employed the Newcastle-Ottawa Scale and the Cochrane Risk of Bias Tool. We also briefly noted potential publication bias due to language and study-type restrictions. From >25,000 initial titles, 3 sequential screenings yielded 145 key articles addressing uterine (septum, myomas, polyps, adhesions) and systemic (body mass index (BMI) extremes, thyroid dysfunction, microbiome imbalance) factors. Surgical corrections (e.g., hysteroscopic removal of polyps/myomas, salpingectomy for hydrosalpinx) significantly improved natural conception and ART success (⩾20%–40% increase in clinical pregnancy). Chronic endometritis treatment, endometrial microbiome modulation, and BMI/thyroid optimization further improved pregnancy rates by 15%–20%. Comparisons of RRM versus ART alone indicated that RRM often lowers overall cost and may reduce miscarriage, while ART offers immediate embryo transfer. Combining RRM to correct pathologies prior to ART can boost implantation and live birth rates (⩾40%–70% improvement in some studies). Restorative Reproductive Medicine comprehensively addresses pelvic and systemic abnormalities, thereby enhancing fertility outcomes and complementing ART. A proposed integrated model—RRM diagnostics/interventions followed by ART if needed—maximizes success, reduces time/cost, and emphasizes holistic reproductive health. Further multicenter trials are warranted to standardize protocols and fully realize RRM’s potential in modern fertility care.
Bernot G et al., 2025·European Journal of Obstetrics & Gynecology and Reproductive Biology
Fertility treatment pathways are complex and lengthy. The current prevalence of infertility makes it a public health issue. The involvement of general practitioners and the training of fertility instructors to provide therapeutic education have been suggested as ways of involving patients in the process and improving the therapeutic trajectory of these patients, who often have co-morbidities. To describe the activity of trained fertility instructors; to assess the interest of doctors in the fertility chart provided by women; and to describe the outcomes of their fertility care pathway. 66 French fertility instructors were interviewed in June 2024. The 15 general practitioners who had received additional training were also interviewed. The records of all couples who received fertility counselling and treatment between 1 January 2022 and 31 December 2023, the study cut-off date, were analysed. Doctors declared that the women had gained a clear understanding of their menstrual cycle, which was useful for diagnosis and treatment follow-up. The chart was particularly useful for diagnosing the causes of infertility and identifying when in the cycle to take medication. Only 4 of the 551 women were lost to follow-up. Of the remaining 547 women, 204 (37%) became pregnant. Of these, 75% had a live birth or an ongoing pregnancy at study cut-off. The involvement of fertility instructors and general practitioners improved the couple s ability to interact with doctors and to adhere to infertility treatment. The fertility chart provided by the women proved to be useful in the diagnosis and treatment process.
Guidelines by Clinical Area · Obstetric Guidelines
Presentation covering three topics: (1) Review of RCOG Green-top Guideline No. 17 on Recurrent Miscarriage (Regan et al., BJOG 2023), (2) Key concepts of Restorative Reproductive Medicine with NeoFertility for recurrent miscarriage, and (3) An RRM case report demonstrating the NeoFertility multifactorial approach to recurrent pregnancy loss.
Stanford JB et al., 2022·Hum Reprod Open·
Open Access
What is the feasibility of a prospective protocol to follow subfertile couples being treated with natural procreative technology for up to 3 years at multiple clinical sites? Overall, clinical sites had missing data for about one-third of participants, the proportion of participants responding to follow-up questionnaires during time periods when participant compensation was available (about two-thirds) was double that of time periods when participant compensation was not available (about one-third) and follow-up information was most complete for pregnancies and births (obtained from both clinics and participants). Several retrospective single-clinic studies from Canada, Ireland and the USA, with subfertile couples receiving restorative reproductive medicine, mostly natural procreative technology, have reported adjusted cumulative live birth rates ranging from 29% to 66%, for treatment for up to 2 years, with a mean women's age of about 35 years. The international Natural Procreative Technology Evaluation and Surveillance of Treatment for Subfertility (iNEST) was designed as a multicenter, prospective cohort study, to enroll subfertile couples seeking treatment for live birth, assess baseline characteristics and follow them up for up to 3 years to report diagnoses, treatments and outcomes of pregnancy and live birth. In addition to obtaining data from medical record abstraction, we sent follow-up questionnaires to participants (both women and men) to obtain information about treatments and pregnancy outcomes, including whether they obtained treatment elsewhere. The study was conducted from 2006 to 2016, with a total of 10 clinics participating for at least some of the study period across four countries (Canada, Poland, UK and USA). The 834 participants were subfertile couples with the woman's age 18 years or more, not pregnant and seeking a live birth, with at least one clinic visit. Couples with known absolute infertility were excluded (i.e. bilateral tubal blockage, azoospermia). Most women were trained to use a standardized protocol for daily vulvar observation, description and recording of cervical mucus and vaginal bleeding (the Creighton Model FertilityCare System). Couples received medical and sometimes surgical evaluation and treatments aimed to restore and optimize female and male reproductive function, to facilitate in vivo conception. MAIN The mean age of women starting treatment was 34.0 years; among those with additional demographic data, 382/478 (80%) had 16 or more years of education, and 199/659 (30%) had a prior live birth. Across 10 clinical sites in four countries (mostly private clinical practices) with family physicians or obstetrician-gynecologists, data about clinic visits were submitted for 60% of participants, and diagnostic data for 77%. For data obtained directly from the couple, 59% of couples had at least one follow-up questionnaire, and the proportion of women and men responding to fill out the follow-up questionnaires was 69% and 67%, respectively, when participant financial compensation was available, compared to 38% and 33% when compensation was not available. Among all couples, 57% had at least one pregnancy and 44% at least one live birth during the follow-up time period, based on data obtained from clinic and/or participant questionnaires. All sites reported on female pelvic surgical procedures, and among all participants, 22% of females underwent a pelvic diagnostic and/or therapeutic procedure, predominantly laparoscopy and hysterosalpingography. Among the 643 (77%) of participants with diagnostic information, ovulation-related disorders were diagnosed in 87%, endometriosis in 31%, nutritional disorders in 47% and abnormalities of semen analysis in 24%. The mean number of diagnoses per couple was 4.7. LIMITATIONS The level of missing data was higher than anticipated, which limits both generalizability and the ability to study different components of treatment and prognosis. Loss to follow-up may also be differential and introduce bias for outcomes. Most of the participating clinicians were not surgeons, which limits the opportunity to study the impact of surgical interventions. Participants were geographically dispersed but relatively homogeneous with regard to socioeconomic status, which may limit the generalizability of current and future findings. Multicenter studies are key to understanding the outcomes of subfertility treatments beyond IVF or IUI in broader populations, and the association of different prognostic factors with outcomes. We anticipate that the iNEST study will provide insight for clinical and treatment factors associated with outcomes of pregnancy and live birth, with appropriate attention to potential biases (including adjustment for potential confounders, multiple imputation for missing data, sensitivity analysis and inverse probability weighting for potential differential loss to follow-up, and assessments for clinical site heterogeneity). Future studies will need to either have: adequate funding to compensate clinics and participants for robust data collection, including targeted randomized trials; or a scaled-down, registry-based approach with targeted data points, similar to the multiple national and regional ART registries. Funding for the study came from the International Institute for Restorative Reproductive Medicine, the University of Utah, Department of Family and Preventive Medicine, Health Studies Fund, the Primary Children's Medical Foundation, the Mary Cross Tippmann Foundation, the Atlas Foundation, the St. Augustine Foundation and the Women's Reproductive Health Foundation. The authors declare no competing interests. The iNEST study is registered at clinicaltrials.gov, NCT01363596.
Women of reproductive age need reliable and effective family planning methods to manage their fertility. Natural family planning (NFP) methods or fertility awareness-based methods (FABMs) have been increasingly used by women due to their health benefits. Nevertheless, effectiveness of these natural methods remains inconsistent, and these methods are difficult for healthcare providers to implement in their clinical practice. The purpose of this study is to evaluate the effectiveness of the Marquette Model NFP system to avoid pregnancy for women at multiple teaching sites using twelve months of retrospectively collected teaching data. Survival analysis (Kaplan-Meier) was used to determine typical unintended pregnancy rates for a total of 1,221 women. There were forty-two unintended pregnancies which provided a typical use unintended pregnancy rate of 6.7 per 100 women over twelve months of use. Eleven of the forty-two unintended pregnancies were associated with correct use of the method. The total unintended pregnancy rate over twelve months of use was 2.8 per 100 for women with regular cycles, 8.0 per 100 women for the postpartum and breastfeeding women, and 4.3 per 100 for women with irregular menstrual cycles. The Marquette Model system of NFP was effective when provided by health professionals who completed the Marquette Model NFP teacher training program.
This study involved determining whether healthcare professionals at ten sites across the United States and Canada trained to provide the Marquette Method NFP services can replicate the effectiveness demonstrated in previous studies of the method. We found a high level of effectiveness (i.e., very low pregnancy rates) in using the Marquette Method among women from various regions across North America with diverse reproductive backgrounds and in particular when using hormonal fertility marker. Healthcare providers who have been trained to teach NFP can successfully incorporate NFP services in their practice and assist their clients in choosing appropriate family planning methods.
Infertility is a worldwide problem today. The more conventional approach of medicine would be to diagnose the causes and correct them, so that the fertility potential of the couple would permit them to conceive naturally. However, since the advance of Assisted Reproductive Technologies, it has become a lucrative industry that seek to help anyone to procure a child. Lately, natural procreative processes such as NaProTechnology have arisen that can restore couples’ fertility potential through proper diagnosis and treatment. The Catholic Church prefers these latter approaches not only because they are truer to the nature of medical practice, but because they are more consistent with a healthy vision of human sexuality, procreation, and marriage.
Infertility Distress · Treatment Burden and Burnout
Infertility affects one in 16 married women in the United States where 12.7% of these seek treatment. The stress of infertility and treatment is known to impact marital satisfaction, which can be further complicated by personal and religious beliefs regarding the ethics of some assistive reproductive technologies. A morally acceptable approach to infertility diagnosis and treatment is natural procreative technology or NaProTECHNOLOGY (NPT) using the Creighton Model FertilityCare™ System. A quantitative, descriptive study utilizing demographic surveys and the Index of Marital Satisfaction found that couples using NPT reported marital satisfaction.
Infertility affects \~20% of the couples in the world. Assisted reproductive technologies (ARTs) are currently the most common treatment option for infertility. Nevertheless, ARTs may be associated with complications for mothers and/or offspring. Natural procreative technology (NaProTechnology) is a natural treatment which minimizes these risks by seeking to identify the causes of infertility to enable better treatments. This narrative review summarizes the complications related to ARTs and clarifies how the NaProTechnology approach can help ARTs to achieve better results or be used in alternative to ARTs. Data in the literature indicate that NaProTechnology is a natural approach for treating infertility. The percentage of live births obtained by NaProTechnology is similar to that of ARTs. An extensive search for the genetic defects causing infertility or subfertility through genetic testing can help both ARTs and NaProTechnology to achieve successful pregnancies. By discovering the underlying causes of infertility, genetic tests enable better family counseling, like the implications of transmitting risk- and disease-alleles to future generations.
Horodenchuk Z et al., 2020·Kwartalnik Naukowy Fides et Ratio
To assess the outcomes of treatment the couples with infertility or recurrent miscarriage with restorative reproductive approach and to identify predictors of success. It was a retrospective study of 282 married couples, who were included in the program in 2 outpatient gynaecological centers in May 2010 - December 2014. The couples were observed to the end of pregnancy (or pregnancies) or withdrawal from the program. All the couples were taught to track the cycle with the Creighton Model FertilityCare System or the sympto-thermal method, and almost all received additional medical treatment. The main outcome was live birth, the secondary outcomes included conceptions, unsuccessful pregnancies, low birth weight and prematurity. In life-table analysis, the adjusted cumulative proportion of first conceptions for those completing up to 24 months of NPT treatment was 77.7% (crude proportion 47.9%). The adjusted cumulative proportion of live births was 73.6% (117 births, crude proportion 41.5%). Mean time to achieving pregnancy was 8 months. All the births except one were singleton. There were only 3 preterm births. The favorable predictors of live birth were younger age, shorter time of trying for baby, good compliance, pregnancy in history. The unfavorable were hyperprolactinemia, uterine fibroids, endometriosis, male factor. The outcomes of restorative reproductive treatment the couples with infertility or recurrent miscarriage in Ukraine were comparable to those in Ireland and Canada.
Immersed in the world dominated by pragmatism, contemporary man seems to be thinking and functioning only according to the criteria of effective acting. However, life experience, philosophical reflection, and the truth of Revelation lead to the conclusion that the laws of nature must be respected in the name of care for man and for one’s genuine good, even though they may, in certain cases, limit the effectiveness of acting and the possibility to acquire current profit. This article justifies the necessity to respect natural law in the sphere of transmission of human life. The starting point of this scientific reflection is the theological vision of values and of the inviolability of human life on the basis of the description of creation from the Book of Genesis. The fundamental truths and moral norms are being neglected nowadays as—being so proud of modern technological achievements—man makes himself the creator and the master of human life. Although such activities seem impressive from the scientific point of view, they actually result in a number of serious contemporary and future threats. The second part of the article presents alarming aspects of artificial interventions in the sphere of life transmission. By exposing the threats and by trying to prevent them in the sphere of infertility treatment, the Church opposes the methods of artificial insemination and becomes engaged in promoting naprotechnology which is a method that expresses genuine humanism, and which gives hope not only to the parents who want to have a baby but also to the mankind that longs for propitious future.
Porucznik CA et al., 2017·Front Med (Lausanne)·
Open Access
The Creighton Model FertilityCare(TM) System (CrM) is a standardized approach for educating women about the biomarkers of their fertility. Couples can use this information for timing intercourse during "fertile" or "infertile" days in order to try to conceive or to avoid pregnancy. The study of Creighton Model Effectiveness, Intentions, and Behaviors Assessment (CEIBA) was conducted to assess fertility motivations, intentions, fertility-related sexual behaviors, and their impact on effectiveness to avoid and to conceive among new users of the CrM. This paper reports enrollment baseline characteristics. We conducted this prospective cohort study at 17 CrM FertilityCare(TM) Centers; 16 in the USA and one in Toronto, Canada. Couples who were new or returning users of the CrM were eligible. Couples who were initially trying to conceive or had a history of subfertility were excluded. Couples were enrolled and followed prospectively by their CrM instructors and also by CEIBA study staff. They completed baseline questionnaires. 1,132 new couples were assessed; 1,090 (96%) couples were screened; 429 (39%) couples were eligible; 305 women (71%) and 290 (95%) male partners were enrolled. The majority of women was engaged (39%) or married (51%), college graduates (77%), Caucasian non-Hispanic (80%), and Roman Catholic (80%). The most common reasons for learning CrM (women) were to use a natural method for family planning (91%), for moral/ethical/religious reasons (70%), the lack of side effects (71%), or insight into the menstrual cycle and fertility (62%). Women and men intended to have a mean of three and two additional children, respectively. Of women, 21% intended to have a child within a year and 60% between 1 and 3 years. The mean positive childbearing motivation score was 3.3 for both women and men (range 1-4, with 4 being most positive). Couples beginning use of the CrM to avoid pregnancy have high levels of motivation, desire, and intention for future childbearing. The CEIBA study has prospective measures of desires, intentions, and sexual/fertility behaviors for up to 1 year. We will assess the impact of desires, intentions, and behaviors on the pregnancy rates among these couples.
Fehring RJ et al., 2017·J Obstet Gynecol Neonatal Nurs·
To analyze the effectiveness of an online, nurse-managed natural family planning (NFP) program among breastfeeding women and subgroups of these women.
Longitudinal comparative cohort study.
A university-based online NFP education program and menstrual cycle charting system. Women (N = 816) with a mean age of 30.3 years (standard deviation = 4.5) who registered to use the online NFP system and indicated they were breastfeeding. Participants tracked their fertile times with an electronic hormone fertility monitor (EHFM), cervical mucus monitoring, or both. All unintended pregnancies were evaluated by professional nurses. The correct use pregnancy rates were 3 per 100 users over 12 cycles of use, and typical rates were 14 per 100 at 12 cycles of use. At 12 cycles of use, total pregnancy rates were 16 per 100 for electronic hormone fertility monitor users (n = 380), 81 per 100 among mucus-only users (n = 45), and 14 per 100 for electronic hormone fertility monitor plus mucus users (n = 391). Use of a nurse-managed online NFP program for women can be effective to help women avoid pregnancy while breastfeeding, especially with correct and consistent use.
Murcia-Lora JM et al., 2017·pers. bioet·
Open Access
En la actualidad hay suficiente evidencia científica que relaciona directamente adquisición, exposición y prevalencia del virus del papiloma humano (VPH) con el cáncer del cuello de uterino. Por ello, el artículo aborda el VPH en la mujer teniendo en cuenta la naprotecnología, que permite conjugar evidencia científica y planteamientos éticos. Se busca que se tengan en cuenta tanto el aspecto biológico de la sexualidad como la capacidad de hacerse persona en su núcleo sexual. De ahí que se analicen programas dirigidos a la educación sexual, basados tanto en la prevención sanitaria como en la antropología de la sexualidad, y apoyados por las instituciones familiares, que han demostrado una mejor acogida ante los riesgos de las enfermedades de transmisión sexual, y entre ellas la infección por el VPH.
to study the results in patients undergoing infertility treatment with a focus on restorative medicine (NaProTechnology) at a department of obstetrics and gynecology. Methodology: retrospective cohort study conducted by the gynecology and obstetrics department at Universidad de los Andes (Santiago, Chile) in infertility patients from a suburban area of Santiago de Chile, who received treatment between 2006 and 2014. All couples received instructions on how to recognize their fertility period according to a local teaching model based on the Creighton Model FertilityCare System. They also received medical treatment to induce ovulation and/or widen their fertile period, or surgical treatment. The main outcome was the number of pregnancies. 131 patients received instructions. The mean age was 33.6 years. Seventyeight patients (59.5%) consulted due to primary infertility; 53 (40.5%) due to secondary infertility. The duration of group infertility was 4.1 years. The mean use of the method was 12.6 months (median, 9 months). The infertility causes identified included anovulation (50.4%), tubo-peritoneal factors (18.3%), endometriosis (14.5%), uterine factors (9.2%), cervical factors (8.4%) and masculine factors (19.1%). There were 33 pregnancies (25.2 global). The crude proportion of pregnancies at 24 months was 22.9% and the proportion adjusted by the life table at 24 months was 40 per 100 couples. the focus on restorative medicine is effective to achieve pregnancy but it requires a long-term longitudinal treatment. Early discontinuation of fertility charting affects the efficacy of this focus. More research is warranted to optimize medical treatment.
By encouraging doctors and scientists to improve the regulation of births through the observation of natural fertility rhythms, Humanae vitae promoted the development of natural family planning (NFP). The study of NFP has lead to NFP-based methodologies in reproductive healthcare that are promoting advances in treatment of infertility, miscarriage, and a number of reproductive health disorders. In contrast, the contraceptive mentality has stunted the development of reproductive healthcare. Humanae vitae has provided a great gift to science and reproductive healthcare that all Catholics should be proud of.
The Creighton Model FertilityCare System (CrMS) teaches women to identify days when intercourse is likely to result in pregnancy. We sought to assess the impact of the CrMS on time to pregnancy (TTP), via per-cycle pregnancy rates (fecundability). We conducted a parallel randomised trial at the University of Utah School of Medicine, 2003-06. Women ages 18-35 years, in a relationship of proven fertility, who desired to conceive, were block-randomised and stratified for age, with allocation concealment by opaque sequentially numbered sealed envelopes. The control group received the advice to have intercourse 2-3 times per week, and the intervention group received CrMS instruction. All women were asked to begin trying to conceive starting the second cycle in the study and were followed actively up to seven cycles, without blinding of research personnel. We calculated descriptive statistics and fecundability, and estimated Cox models for TTP. (Clinicaltrials.gov NCT00161395). There were 143 women randomised: 71 to the control group (all analysed) and 72 to the CrMS group (69 analysed). The adjusted hazard ratio for the influence of CrMS on TTP was 0.86 [95% confidence interval (CI): 0.53, 1.38]. Fecundability in cycles with intent to conceive was 31% in controls and 36% with CrMS (P = 0.32). By the first cycle, fecundability was 17% in controls, and 4% with CrMS (P = 0.02). No adverse events were reported. We found no significant impact of CrMS on TTP or fecundability, but fewer of the women receiving CrMS conceived by the first cycle.
L’auto-osservazione e il follow-up grafico del ciclo mestruale in caso di presunta sterilita, aiutano a diagnosticare e trattare certe alterazioni ginecologiche, al fine di attuare il rapporto sessuale finalizzato ad ottimizzare concepimento. Attraverso queste procedure naturali (naprotecnologia), prive di aspetti negativi da un punto di vista etico, possiamo ottenere tassi di natalita che sono paragonabili, o addirittura superiori, a quelle ottenute con trattamenti invasivi. ---------- Self-observation and the graphic follow-up of the menstrual cycle in cases of supposed infertility, help to diagnose and treat certain gynaecological alterations in order to carry out the sexual intercourse focused on optimising conception. Through these natural procedures (Naprotechnology), with no ethical drawbacks, we can obtain birth rates that are comparable, or even higher, to those obtained with invasive treatments.
In the last 50 years, a surge of reproductive technology has revolutionized the practice of obstetrics and gynecology. First, effective hormonal contraceptives were made available to the public in the 1960s and, since their debut, have been used to treat almost every gynecologic abnormality [1]. Second, in the past 30 years, infertility has largely been managed using assisted reproductive technologies (ART), primarily intrauterine insemination (IUI) with recourse to in vitro fertilization (IVF) when insemination fails [2]. As a result, the modus operandi in mainstream gynecology has been to suppress, or to bypass, the woman’s fertility cycle.
Physicians and patients who (1) conscientiously object to the therapeutic use of hormonal contraceptives on the grounds that it subjects patients to ineffective treatment of symptoms rather than treating their underlying disease and (2) morally oppose the ART approach to infertility on the grounds that it jettisons a loving act of marital intercourse, the one context worthy of the conception of a new human being, are now able to pursue an alternative approach that accords with their consciences. NaProTECHNOLOGY (an acronym for natural procreative technology) is a woman’s health science that encompasses a unique medical and surgical application of gynecology. The foundation of NPT is the Creighton Model FertilityCare System (CrMS), see Figure 1, the only prospective and standardized means of monitoring the various patterns of a woman’s menstrual and fertility cycle for the natural regulation of fertility.
For example, because it views infertility as a symptom rather than a disease, NPT seeks to diagnose and treat the underlying causes of infertility so that the couple can more successfully conceive within their own acts of intercourse, especially during peak-day-focused intercourse. NPT infertility protocols depend on patient-specific charting data. Some observations during the fertility cycle—dry, limited, or continuous mucus; short or variable post-peak phase; premenstrual spotting or tail-end brown bleeding—are external signs of possible underlying disease processes.
A medical interpretation of these abnormal CrMS observations leads to a targeted biochemical and hormonal evaluation, which in turn identifies target organ dysfunctions: decreased production of estrogenic cervical mucus, intermenstrual bleeding or spotting, short or variable luteal phases, and suboptimal levels of the ovarian hormones (estrogen or progesterone). Common treatments for these pathologies include induction or stimulation of ovulation, medications to enhance cervical mucus, and hormonal support in the luteal phase. When these NPT medical approaches to infertility were used in a study of 1,239 infertile couples, they resulted in a live birth rate similar to that of cohort ART treatments [3].
In many cases, medical applications of NPT are sufficient to treat infertility successfully; in other cases, surgical intervention is also required. Surgical NPT is a specialized form of gynecologic surgery the primary aim of which is to reconstruct the uterus, fallopian tubes, and ovaries. The ovarian wedge resection (surgical removal of a portion of an enlarged ovary to restore its normal size), for example, is effective in healing polycystic ovaries (contributing to the long-term treatment of some of the endocrine and menstrual cycle abnormalities associated with polycystic ovaries). It also brings the patient a 70 percent chance of pregnancy i.e., it is twice as effective as clomiphene [4].
A significant benefit of surgical NaProTECHNOLOGY is “near adhesion-free” surgery. One of the biggest pitfalls of surgery, of course, is the formation of postoperative adhesions, which can decrease tubal motility (adversely affecting fertility) and cause small bowel obstructions (that frequently require emergency reoperation) [5]. To prevent these complications, NPT surgical techniques pay meticulous attention to detail, take a systematic approach, and use Gore-Tex adhesion barriers [6]. Published Gore-Tex protocols reveal a statistically significant decrease in subsequent adhesion scores on second-look laparoscopy [7]. For some reason, the use of Gore-Tex has been overlooked in even the most recent adhesion prevention reviews [8]. One even laments that adhesion prevention is a “surprisingly neglected aspect of the treatment of endometriosis,” but the reviewers make no mention of the use of Gore-Tex as an adhesion barrier.
Other techniques of surgical NPT include laser vaporization and pelvic excision and repair surgery (PEARS) of peritoneal or ovarian endometriosis. PEARS is a form of plastic reconstructive surgery of the pelvis with the primary intent of removing diseased tissue within the pelvic organs and repairing organs in a way that does not form pelvic adhesions. PEARS can entail robot-assisted laparoscopy or laparotomy, minimizing postoperative adhesions and optimizing the patient’s chances for pregnancy.
The effectiveness of treating infertility with medical and surgical NPT is comparable to that of ART interventions. The cumulative live birth rate in patients receiving IVF is between 45-55% [10]. In a study population of 1,045 patients treated with NPT infertility protocols, more than 60 percent became pregnant within 24 months and nearly 70 percent within 36 months [11]. The overall �per-woman� NPT pregnancy rate is higher than that of ART due, in part, to the high rate of dropout or discontinuation in patients who undergo IVF treatment [12]. In addition, a meta-analysis comparing conventional surgery and IVF for treatment of endometriosis-related infertility found that the per-woman pregnancy rates with surgery were 55.3 percent while those with IVF were 9.9 percent [13]. However, while it is true patients treated with NPT have significantly lower overall fecundability (a 3.13 percent chance of conceiving within a given period) than those treated with IVF (13.3 percent), it is also true that the number of women who ultimately achieve a pregnancy with NPT is higher than the number who get pregnant using ART [14]. Thus, although achieving a live birth with NPT may take longer, it has a greater chance of occurring than with IVF.
For those interested in training in NPT, the Pope Paul VI Institute and Creighton University School of Medicine offer educational programs for those in primary care or ob/gyn (including fourth-year medical students) to train in the medical applications of NaProTECHNOLOGY [15]. They also offer a 1-year fellowship in the surgical applications of NPT for ob/gyns who have completed their residencies [16].
The current approach to infertility of assisted reproductive technology (ART) completely misses and then bypasses the evaluation and treatment of cervical factor infertility. In contrast, the Creighton Model Fertility Care System (CrMS), a method of fertility awareness that has the unique ability to quantify cervical mucus observations, and natural procreative technology (NaProTECHNOLOGY or NPT) directly evaluate and treat cervical factor infertility. The ART treatment of choice for cervical factor infertility--intrauterine insemination (IUI)--is also morally disparate from the NPT treatment protocol: while the latter genuinely assists the infertile couple's act of sexual union to achieve its natural end of pregnancy, IUI replaces the natural act, depriving human conception of the one context worthy of the dignity of human life and procreation, a reciprocal self-gifting act of love between husband and wife. A renewed interest and focus on the direct evaluation and treatment of cervical factor infertility is needed.
To study the outcomes of women with infertility or miscarriage treated with natural procreative technology (NaProTechnology or NPT), a systematic medical approach to promoting conception in vivo; and to compare the outcomes with those previously published from a general practice in Ireland. Retrospective cohort study. An urban Canadian primary care practice in which the physician had a part-time practice in NPT. Couples with infertility or recurrent miscarriage who received treatment in the practice between August 2000 and July 2006. All couples were taught to identify the fertile time of their menstrual cycles using the Creighton Model FertilityCare System (CrMS) and completed a standard NPT evaluation. Many also received additional medical treatment to enhance conception in vivo. Live birth was the primary outcome; secondary outcomes included conceptions, multiple births, low birth weight, and prematurity. A total of 108 couples received NPT and were included in the analysis, of which 19 (18%) reported having 2 or more previously unexplained miscarriages. The average female age was 35.4 years. Couples had been attempting to conceive for a mean of 3.2 years. Twentytwo participants (20%) had previously given birth; 24 (22%) had previous intrauterine insemination; and 9 (8%) had previous assisted reproductive technology. The cumulative adjusted proportion of first live births for those completing up to 24 months of NPT treatment was 66 per 100 couples, and the crude proportion was 38%. The cumulative adjusted proportion of first conceptions was 73 per 100 couples, and the crude proportion was 47%. Of the 51 couples who conceived, 12 couples (24%) conceived with CrMS instruction alone, 35 (69%) conceived with CrMS and NPT medical treatment, and 4 (8%) conceived after additional surgical treatment. All births were singleton births; 54% were born at 37 weeks' gestation or later; and 78% had birth weights of 2500 g or greater. Natural procreative technology in a family physician's office was effective in treating infertility and miscarriage with outcomes that were comparable to those in an NPT general practice in Ireland. Larger multicentre prospective studies to compare NPT directly to other forms of infertility treatment are warranted.
Couples presenting with 3 or more miscarriages fit the definition of recurrent miscarriage which affects 1% of those trying to conceive. Clinics based in Dublin and Galway use a multifactorial approach with NaProTechnology to evaluate and treat such couples. 355 couples with subfertility attended for 2+ consultations during 2010. 50 (14%) had 3+ miscarriages. Of 36 who conceived, 29 (80.6%) had live births, 4 (11.1%) miscarried, 2 (5.6%) had ectopic pregnancies. Average female age 37.5 years. Expected miscarriage rate for this population would be above 30-40%. A total miscarriage and ectopic rate of 16.7% per couple is encouraging. Women with recurrent miscarriage appear to have better than expected outcomes following a multifactorial NaPro treatment approach.
Fehring RJ et al., 2008·MCN Am J Matern Child Nurs·
To determine the effectiveness of the Marquette Method (MM) of natural family planning (NFP) as a method of avoiding pregnancy. This was a 12-month retrospective evaluation of the MM system of NFP. Two hundred and four women (mean age, 28.6 years) and their male partners (mean age, 30.3 years) who sought to learn a method for avoiding pregnancy with the MM from four clinical sites were taught to track their fertility by self-observation of cervical mucus, by use of an electronic monitor that measures urinary levels of estrone-3-glucuronide and luteinizing hormone, and by use of basal body temperature. All unintended pregnancies were evaluated by professional nurses as to whether they were intended or not. Pregnancy rates over 12 months of use were determined by survival analysis. There were a total of 12 unintended pregnancies, only 1 with correct use. The 12-month "correct use" pregnancy rate was 0.6 (i.e., 99.4% effective) and the "typical use" (total pregnancy rate) was 10.6 (i.e., 89.4% effective) per 100 users.
Clinical When used correctly, the MM system of NFP is an effective means of avoiding pregnancy. The efficacy of the MM system includes proper preparation of the professional nurse NFP teachers.
We evaluated outcomes in couples treated for infertility with natural procreative technology (NaProTechnology [corrected] NPT), a systematic medical approach for optimizing physiologic conditions for conception in vivo, from an Irish general practice. All couples receiving treatment from 2 NPT-trained family physicians between February 1998 and January 2002 were studied. The main outcome was live birth, and secondary outcomes included conceptions and multiple births. Crude proportions and adjusted life-table proportions were calculated per 100 couples. A total of 1239 couples had an initial consult for NPT, of which 1072 had been trying for at least a year to conceive and initiated treatment. The average female age was 35.8 years, the mean duration of attempting to conceive was 5.6 years, 24% had a prior birth, and 33% had previously attempted treatment with assisted reproductive technology (ART). All couples were taught to identify the fertile days of the menstrual cycle with the Creighton Model FertilityCare System, and most received additional medical treatment, including clomiphene (75%). In life-table analysis, the cumulative proportion of first live births for those completing up to 24 months of NPT treatment was 52.8 per 100 couples. The crude proportion was 25.5. Younger couples and couples without previous ART attempts had higher rates of live birth. Among live births, there were 4.6% twin births. NPT provided by trained general practitioners had live birth rates comparable to cohort studies of more invasive treatments, including ART. Further studies are warranted to compare NPT directly to other treatments.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Male infertility plays a clinically significant role in a large share of couples who struggle to conceive, yet standard laboratory criteria for semen analysis were designed primarily to predict success with assisted reproduction, not natural fertility. NaProTECHNOLOGY approaches male factor as a diagnosable condition with identifiable root causes, applying medical and surgical options aimed at restoring sperm function and combining that work with fertility-awareness charting to maximize the couple's chances of natural conception.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Preterm birth remains a leading cause of perinatal mortality, with rates in the United States rising significantly over the latter half of the twentieth century despite decades of awareness. NaProTechnology's integrated prevention approach, developed at the Pope Paul VI Institute, addresses this problem through systematic risk stratification, hormonal support, infection surveillance, and cervical monitoring across the full course of pregnancy.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
An economic analysis of NaProTECHNOLOGY compares the total treatment costs and cost-per-live-birth outcomes against assisted reproductive technologies, including IVF, drawing on outcome data from the Pope Paul VI Institute to demonstrate that NaPro's higher per-cycle success rates yield a favorable cost-effectiveness ratio despite comparable or lower upfront expenditures. Because NaProTECHNOLOGY identifies and corrects underlying pathology rather than bypassing it, its resource utilization model supports long-term gynecological health benefits that IVF cannot provide, making the economic case inseparable from the clinical one.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Chapter 13 of Hilgers' NaProTECHNOLOGY textbook establishes a clinical behavioral taxonomy unique to the Creighton Model FertilityCare System, distinguishing between achieving-related and avoiding-related use based on whether a couple's actions increase or decrease the probability of conception. The chapter argues that a "taking a chance" mindset is inherently contraceptive in psychology and must be replaced with intentional, education-grounded behavior that reflects a couple's genuine family planning goals.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
The structured protocols used to train and certify FertilityCare Practitioners (FCPs) in the uniform delivery of CrMS instruction are detailed, covering the sequence of follow-up sessions, the use of standardized teaching aids, and quality-control mechanisms that ensure inter-instructor consistency. Standardization is essential to the scientific validity of CrMS data, because chart comparability across practitioners and study populations depends on identical observation and recording conventions.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
The content and sequence of the introductory and follow-up instructional sessions that constitute the formal CrMS education series are outlined, covering observation technique, recording conventions, and the practitioner-client interaction model. Consistent delivery of these core instructions establishes the behavioral competence required for both family planning use and the medical monitoring applications that NaProTECHNOLOGY depends upon.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
NaProTECHNOLOGY uses the Peak Day of the Creighton Model chart — the last day of the most fertile-type cervical mucus — as the reference point for dating conception, providing a biologically grounded alternative to last menstrual period dating that remains accurate across irregular cycles. Precise cycle-based dating improves the clinical interpretation of early pregnancy hormone levels, ultrasound findings, and obstetric gestational age assignments, reducing unnecessary interventions triggered by apparent growth discordance.
Parnell T, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Reproductive outcomes in women aged 35 and older are analyzed using CrMS-monitored cycles, documenting that natural conception remains achievable when ovulatory function and hormonal sufficiency are maintained and underlying pathology is treated. NaProTECHNOLOGY's restorative approach offers an alternative to assisted reproduction for mature-age patients by identifying and correcting specific endocrine or anatomical barriers.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Proximal tubal occlusion at the uterotubal junction, whether from salpingitis isthmica nodosa, fibrosis, or prior sterilization, requires cornual resection and microsurgical tubal reimplantation to re-establish luminal continuity. NaProTECHNOLOGY treats this as a reconstructive procedure rather than a reason to defer to IVF, and outcomes data support intrauterine pregnancy rates comparable to assisted reproduction in appropriately selected patients.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
The institutional architecture supporting the CrMS — including the FertilityCare Centers of America network, the American Academy of FertilityCare Professionals (AAFCP), training and certification pathways, and the research programs of the Pope Paul VI Institute — is described. This infrastructure is what distinguishes NaProTECHNOLOGY from informal fertility awareness methods, providing the professional standards, peer accountability, and ongoing research capacity required for clinical credibility.
Hilgers TW et al., 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Patients who have undergone multiple failed IVF cycles and are counseled to abandon fertility treatment represent a significant NaProTECHNOLOGY cohort in whom undiagnosed correctable pathology — including subtle endometriosis, luteal insufficiency, or immunological factors — is subsequently identified and treated. Published data demonstrate clinically meaningful pregnancy rates in this population following NaProTECHNOLOGY evaluation and treatment, demonstrating that ART failure does not predict failure of restorative approaches.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Adaptations of CrMS instruction for physiologically distinct reproductive states — including breastfeeding, post-hormonal contraceptive use, long or irregular cycles, and premenopause — are described with specific observational guidance for each context. These special protocols extend the clinical reach of the CrMS to all phases of a woman's reproductive life and ensure that charting remains interpretable even when cycle dynamics are atypical.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Structured postoperative management following PEARS procedures addresses wound care, pain control, early ambulation, hormonal support, and surveillance for complications including bleeding, infection, urinary injury, and bowel complications. NaProTECHNOLOGY postoperative protocols integrate CrMS-guided hormonal monitoring to optimize the healing environment and time the resumption of targeted fertility treatment.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Escalating rates of contraceptive use, abortion, divorce, child abuse, teenage pregnancy, and out-of-wedlock births over the preceding four decades are documented as interconnected indicators of systemic failure in women's and family healthcare. Hilgers argues these trends reflect a prevailing medical culture that suppresses or bypasses reproductive function rather than supporting it, establishing the clinical and moral imperative for a restorative alternative.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
The Creighton Model's standardized daily vulvar observation system -- recording discharge color, consistency, quantity, and sensation -- allows chronic pathological discharges (persistent yellow or cloudy mucus, continuous post-Peak discharge, premenstrual brown bleeding, or refractory vulvovaginitis) to be distinguished from normal cyclical mucus patterns and tracked longitudinally as a diagnostic tool. NaProTECHNOLOGY uses chronic discharge patterns as biomarkers that prompt organism-specific cultures, targeted hormonal evaluation, ultrasound, and etiology-directed treatment -- including antimicrobials, cooperative hormone replacement, or fertility-sparing surgery -- rather than empirical cycle suppression.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Endometriosis recurrence after surgical excision remains a clinical reality driven by residual ectopic implants, persistent hormonal milieu favoring re-seeding, and incomplete initial resection. NaProTECHNOLOGY addresses recurrence risk through postoperative hormone normalization guided by CrMS biomarkers, with repeat PEARS reserved for symptomatic or fertility-impairing recurrence confirmed by clinical and laparoscopic assessment.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Hilgers distinguishes isomolecular hormones -- molecules structurally identical to endogenous estradiol and progesterone -- from heteromolecular artimones, his term for synthetic analogues such as medroxyprogesterone acetate, norethindrone, and ethinyl estradiol, which differ in receptor binding, metabolic pathways, and systemic effects. NaProTECHNOLOGY restricts hormone therapy to isomolecular compounds administered in cycle-synchronized, physiologic doses because artimones suppress the hypothalamic-pituitary-ovarian axis, mask underlying pathology, and produce non-physiologic metabolite profiles incompatible with a restorative reproductive medicine approach.
Stanford JB, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Methodologically rigorous effectiveness data for the CrMS are presented, including method-effectiveness and use-effectiveness rates for pregnancy avoidance drawn from prospective cohort studies, demonstrating rates comparable to or exceeding hormonal contraception. Standardized outcome measurement is necessary to establish the CrMS's scientific credibility and to provide practitioners and patients with accurate, evidence-based counseling on system performance.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Chronic pelvic pain and dysmenorrhea in reproductive-age women most commonly reflect undertreated endometriosis, adenomyosis, ovarian dysfunction, or pelvic adhesive disease rather than psychosomatic pathology. NaProTECHNOLOGY evaluates these symptoms through a structured diagnostic pathway integrating CrMS biomarker profiles, hormonal assays, and targeted laparoscopy, directing restorative surgical and medical interventions rather than suppressive hormonal therapy.
Hilgers TW et al., 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Compounding pharmacists prepare individualized hormone formulations — including HCG, progesterone, and thyroid preparations — that are central to NaProTECHNOLOGY treatment protocols, where standardized commercial doses are often inadequate for patient-specific needs. Collaborative prescribing between NaPro practitioners and licensed compounding pharmacists ensures consistent bioidentical formulation quality, dosing precision, and regulatory compliance within fertility and reproductive endocrine management.
Workflow and Documentation · Charting Systems and Records
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
A systematic framework for managing patient cases within the CrMS-NaProTECHNOLOGY system is presented, addressing how FCPs and medical consultants collaborate to identify abnormal chart patterns, initiate medical referral, and coordinate ongoing care. Structured case management is the operational bridge between fertility monitoring and clinical intervention, ensuring that biomarker observations are translated into timely diagnostic and therapeutic action.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Conventional infertility care has shifted toward assisted reproductive technologies that bypass underlying pathology rather than diagnose and treat root causes, leaving a large proportion of couples with unresolved, correctable conditions. NaProTECHNOLOGY addresses this systemic deficiency by emphasizing standardized evaluation, cycle-based hormonal profiling, and targeted medical and surgical treatment before any bypass technology is considered.
Hilgers TW et al., 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Pregnancy achievement rates among couples using the CrMS to target fertile days are analyzed by cycle type, reproductive history, and duration of use, demonstrating the system's capacity to accommodate irregular and abnormal cycles without reducing its fertility-targeting utility. These data are foundational to NaProTECHNOLOGY's application in infertility management, establishing that the CrMS identifies fertile windows even in subfertile populations with disrupted cycle parameters.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
The CrMS charting system is explained in full, including the stamp-based notation for recording mucus characteristics, bleeding, and dry days on the standardized chart, and the conventions for identifying the Peak Day. Accurate chart reading is the foundational clinical skill for NaProTECHNOLOGY practitioners, as the chart provides the biomarker timeline against which hormone profiles and pathology are interpreted.
Hilgers TW, 2004·The Medical and Surgical Practice of NaProTECHNOLOGY·
Women with persistent or continuous vaginal discharges — including those from chronic cervicitis, hormonal imbalance, or other gynecologic sources — present a distinct charting challenge, and this chapter provides CrMS-specific protocols for distinguishing pathologic discharge from fertile-quality cervical mucus. Correct identification is clinically critical because misclassification distorts cycle interpretation, effectiveness calculations, and the hormone-assessment timeline.
To assess the day-specific and cycle-specific probabilities of conception leading to clinical pregnancy, in relation to the timing of intercourse and vulvar mucus observations. This was a retrospective cohort study of women beginning use of the Creighton Model Fertility Care System in Missouri, Nebraska, Kansas, and California. Data were abstracted from Creighton Model Fertility Care System records, including women's daily standardized vulvar observations of cervical mucus discharge, days of intercourse, and clinically evident pregnancy (conception). Established statistical models were used to estimate day-specific probabilities of conception. Data were analyzed from 1681 cycles with 81 conceptions from 309 normally fertile couples (initially seeking to avoid pregnancy) and from 373 cycles with 30 conceptions from 117 subfertile couples (who were initially trying to achieve pregnancy). The highest probability of pregnancy occurred on the peak day of vulvar mucus observation (.38 for normally fertile couples and.14 for subfertile couples). The probability of pregnancy was greater than.05 for normally fertile couples from 3 days before to 2 days after the peak, and for subfertile couples from 1 day before to 1 day after the peak. The cycle-specific probability of conception correlated with the quality of mucus discharge in normally fertile couples but not in subfertile couples. Standardized vulvar observations of vaginal mucus discharge identify the days with the greatest likelihood of conception from intercourse in normal fertility and subfertility and provide an indicator of the overall potential for conception in a given menstrual cycle in normal fertility.
Effective use of natural family planning is strongly dependent upon adequate instruction. The Creighton Model Fertility Care System (CrMS) has a standardized protocol for instruction of new users that includes individual follow-up visits in the first year of use. This study evaluated the number of follow-up visits completed by new CrMS users from eight CrMS centers in the United States. Four follow-up visits were completed by 75.7% of women. Women who continued instruction were more likely to be educated, Catholic, and white, and to have a more challenging reproductive status (discontinuing oral contraceptives, or breastfeeding). These results suggest that the number of follow-up visits needed varies among new CrMS users. Future research should address the optimal length of instruction for adequate use of the CrMS by women with different characteristics and needs.
To evaluate pregnancy probabilities during use of the Creighton Model Fertility Care System (CrMS). Couples who began use of the CrMS were entered into this observational cohort study. Follow-up included detailed reviews of use of the CrMS. Pregnancy probabilities were calculated with both net and gross life-table analysis through 18 months. A natural family planning service delivery program based at an urban hospital in Houston, Tex. A group of 701 couples who received instruction in the CrMS were entered into the study. Most couples (93%) were engaged or married. Most women were white (83%), between the ages of 20 and 34 years (88%), and college graduates (58%). Pregnancies were classified based on a detailed evaluation involving the pregnant woman (usually with her partner). At 12 months, the following net pregnancy probabilities were found per 100 couples: method-related pregnancies, 0.14; pregnancies caused by user and/or teacher error, 2.72; pregnancies caused by achieving-related behavior (genital contact during a time known to be fertile), 12.84; unresolved pregnancies, 1.43; and total pregnancies, 17.12. Pregnancy probabilities were similar when stratified by the following reproductive categories: uncomplicated regular cycles, long cycles, discontinuing oral contraceptives, breastfeeding, and other. Pregnancy probabilities of the CrMS compare favorably with those of other methods of family planning. Most pregnancies result from genital contact during a known fertile time. Women need not have regular cycles to use the CrMS successfully.
To evaluate the use effectiveness of Creighton Model (CrM) NaProEducation Technology for avoiding pregnancy. CrM is a medical model of natural procreation education that is a fully standardized modification of the Billings ovulation method. This system has been used as a means to avoid pregnancy and has been prospectively evaluated in five use effectiveness studies. A prospective life-table analysis of the five studies (meta-analysis) was undertaken, yielding both net and gross rates. Discontinuation rates were also calculated. These studies were conducted at CrM centers in Omaha, St. Louis, Wichita, Houston, and Milwaukee. A total of 1,876 couples used CrM NET for a total of 17,130.0 couple months of use. The method and use effectiveness rates for avoiding pregnancy were 99.5 and 96.8 at the 12th ordinal month and 99.5 and 96.4 at the 18th ordinal month, respectively. The discontinuation rate was 11.3% at the 12th ordinal month and 12.1% at the 18th ordinal month. CrM is highly effective as a means of avoiding pregnancy in both its method and use effectiveness. The method effectiveness has remained stable over the years of the studies, but the use effectiveness for avoiding pregnancy appears to have improved over the study period.
Fehring RJ et al., 1994·J Obstet Gynecol Neonatal Nurs·
To determine the use effectiveness of the Creighton model ovulation method in avoiding and achieving pregnancy. Prospective, descriptive. A natural family planning clinic at a university nursing center. Records and charts from 242 couples who were taught the Creighton model. The sample represented 1,793 months of use of the model. Creighton model demographic forms and logbook. At 12 months of use, the Creighton model was 98.8% method effective and 98.0% use effective in avoiding pregnancy. It was 24.4% use effective in achieving pregnancy. The continuation rate for the sample at 12 months of use was 78.0%. The Creighton model is an effective method of family planning when used to avoid or achieve pregnancy. However, its effectiveness depends on its being taught by qualified teachers. The effectiveness rate of the Creighton model is based on the assumption that if couples knowingly use the female partner's days of fertility for genital intercourse, they are using the method to achieve pregnancy.
Hilgers TW et al., 1992·The Journal of reproductive medicine
Fifty consecutive clients achieved pregnancy using a standardization modification of the Billings ovulation method (the Creighton Model Natural Family Planning System). Of 50 clients followed, 38 (76%) achieved pregnancy in the first cycle of fertility-focused intercourse, 45 of 50 (90%) achieved pregnancy by the third cycle and 49 of 50 achieved pregnancy by the sixth cycle (98%).
Fifty consecutive clients achieved pregnancy using a standardization modification of the Billings ovulation method (the Creighton Model Natural Family Planning System). Of 50 clients followed, 38 (76%) achieved pregnancy in the first cycle of fertility-focused intercourse, 45 of 50 (90%) achieved pregnancy by the third cycle and 49 of 50 achieved pregnancy by the sixth cycle (98%).