Restorative Reproductive Medicine · Restorative Care and Assisted Reproduction
RRM Academy Synopsis
Systematic review finds no controlled studies comparing RRM with ART
Critical to restorative reproductive medicine
A 2026 systematic review identified no study comparing RRM with ART or unassisted conception in couples with infertility. The reviewers excluded all 16 studies read in full because of an ineligible study design. The authors call for large randomized trials or cohort studies of RRM.
Key Findings
- The authors searched MEDLINE, Embase, CENTRAL and the Journal of Restorative Reproductive Medicine through 28 November 2025 and identified no randomized trials or comparative observational studies of restorative reproductive medicine (RRM).
- Sixteen studies reached full-text review and all were excluded for ineligible design: nine cohort studies without a true control group, two case reports, three literature reviews, one commentary and one systematic review.
- Nine studies claimed a benefit for RRM, and the authors judged that none of these claims was supported by the study designs used.
- The authors describe a possible randomized trial in couples with unexplained infertility aged under 35, and a more feasible prospective cohort study following couples on RRM or ART pathways.
- The authors state that most core components of RRM already align closely with infertility guidelines from the World Health Organization, NICE and the American Society for Reproductive Medicine.
Interpretation
The paper is a systematic review, a method that searches for every study meeting predefined criteria. The authors registered their protocol in advance, and two reviewers screened records independently. Eligible studies compared RRM, defined as a combination of two or more methods, with assisted reproductive technology (ART) or attempted unassisted conception. Because no study qualified, the review reports a gap in the research and appraises outcome studies that all lacked a comparison group. The authors note that they evaluated RRM as a whole, so studies of individual components were not captured. Two authors declare positions at fertility clinics.
RRM Context
Restorative reproductive medicine starts from the principle that infertility has causes that can be found. It evaluates both partners, reads the ovulatory cycle as a vital sign, and treats the conditions it finds. The studies appraised in the review include NaProTechnology outcome series. The authors outline randomized and prospective cohort designs for testing RRM.
Abstract
Importance
Restorative Reproductive Medicine (RRM) aims to restore fertility by diagnosing and treating the underlying causes of infertility. RRM is frequently promoted as an alternative to assisted reproductive technology (ART), despite uncertainty regarding its comparative effectiveness and safety. Where delayed childbearing and infertility are becoming more common, reliance on optimization of natural physiology alone may delay effective treatment and compromise reproductive outcomes. A systematic review of the current evidence comparing RRM to either ART or unassisted conception is, therefore, essential to inform clinical practice, guideline development, and shared decision-making for patients experiencing infertility.
Objective
To assess the effectiveness and safety of RRM approaches, evaluated as a whole, rather than as individual components, compared with ART and medically unassisted conception in couples experiencing infertility.
Evidence Review
A systematic literature search of MEDLINE, Embase, CENTRAL and the Journal of Restorative Reproductive Medicine from inception to 28 November 2025. We included randomized control trials (RCTs) or nonrandomized comparative studies evaluating reproductive and safety outcomes of RRM as a unified treatment, compared with either ART or expectant management (attempted medically unassisted conception). Two reviewers independently screened titles, abstracts and full texts with disagreements resolved by a third reviewer.
Findings
We retrieved 724 records, of which 16 studies underwent full-text review. No RCTs or comparative observational studies were identified. All 16 full-text studies were excluded for an ineligible study design (no control group); most were cohort studies in which all participants underwent RRM. Ten studies reported reproductive outcomes; nine of these made claims regarding the benefits or effectiveness of RRM. None of these claims were supported by the study designs used, as the lack of a comparison group precludes reliable estimation of treatment effects. Consequently, these studies cannot provide valid estimates of RRM success rates, nor permit any meaningful inference about its effectiveness relative to unassisted conception or ART. Large-scale RCTs or prospective cohort studies reporting effectiveness and safety outcomes are required to inform evidence-based fertility guidelines.
Conclusions and Relevance
There are no comparative studies to support reliable estimates of the safety and effectiveness of RRM compared with ART or medically unassisted conception for couples experiencing infertility.
