The review was conducted according to PRISMA 2020 reporting standards and prospectively registered in PROSPERO under registration number CRD420261400459, with the registration dated 20 May 2026. The research team searched six bibliographic databases along with the ClinicalTrials.gov registry through 20 August 2026, applying no language restriction, and supplemented the electronic searches with backward citation searching of the included studies. Two reviewers independently screened records and full texts, extracted data, assessed risk of bias at the result level, and rated the certainty of the evidence, with disagreements resolved through discussion and, where necessary, adjudication by a third reviewer. This dual-reviewer architecture matters because systematic reviews live or die by the reproducibility of their selection and appraisal decisions; single-reviewer pipelines are a well-recognised source of error in the evidence-synthesis literature.

The scale of the underlying evidence base is the first striking finding. The searches identified 3,197 database records and 68 ClinicalTrials.gov entries, yet only eight reports describing six independent randomised trials met the inclusion criteria, and just five of those trials contributed quantitative data to the syntheses. For a condition as prevalent and disabling as endometriosis, that attrition rate from thousands of records to a handful of usable trials is itself a message about how little high-quality experimental work has been done. The trials that did qualify were small and heterogeneous, which constrained every downstream analysis the team attempted.

The statistical machinery the authors deployed deserves attention because it was chosen specifically to guard against the overconfidence that small samples can breed. Rather than relying on a single pooling approach, the team ran random-effects meta-analyses using restricted maximum likelihood estimation with Hartung-Knapp inference, a method that widens confidence intervals when the number of studies is small and between-study variance is uncertain. They also ran alternative small-k models as sensitivity analyses and computed prediction intervals, which estimate the range of effects a new trial in a comparable setting might plausibly show. The GRADE framework was applied using review-stage clinical decision thresholds to grade certainty for each outcome, and the result was unambiguous: certainty was rated as very low for all key outcomes.

The headline quantitative result concerns overall endometriosis-related pain, pooled across four trials with a combined 271 participants. The standardised mean difference was -0.36, with a 95 percent confidence interval spanning -0.95 to 0.24, meaning the interval crosses the null and cannot exclude either a substantial benefit or a modest harm. Heterogeneity was moderate, with an I-squared of 57.2 percent, and the prediction interval stretched from -1.74 to 1.03, an extraordinarily wide band that captures effects ranging from large improvement to no benefit at all. In plain terms, even the point estimate, which modestly favoured exercise, is compatible with almost any clinical reality a future trial might reveal.

The multidimensional symptom picture fared no better. Psychological distress, synthesised from three trials with 243 participants, yielded a standardised mean difference of -0.29 with a confidence interval of -1.43 to 0.85, a range so wide it is essentially uninformative. Sexual function, pooled from three trials totalling 144 participants, produced a mean difference of -2.23 with a confidence interval of -5.96 to 1.51 on the relevant instrument scale. Perhaps most tellingly, the authors report that statistical significance differed across random-effects specifications for five of their syntheses, meaning the conclusions were method-dependent: whether exercise appeared statistically significant depended on which defensible statistical model the analysts chose. Findings that flip with the choice of estimator are, by convention, treated as unstable rather than as evidence of a real effect.

Safety data added another layer of concern. Harms reporting across the included trials was inconsistent, making it impossible to characterise the adverse-effect profile of structured exercise in this population with any confidence. This is a recurring blind spot in exercise-intervention research generally, where physical activity is assumed to be benign and trialists often neglect systematic adverse-event collection. For women with endometriosis, whose symptoms can include deep dyspareunia and activity-provoked pelvic pain, the assumption that exercise is universally tolerable is not self-evident, and the absence of standardised harms data leaves clinicians without the information needed to counsel patients responsibly.

What does this mean for practice? The authors are careful to distinguish between the absence of evidence and evidence of absence. The point estimates across outcomes generally favoured exercise, and nothing in the analysis suggests structured training is harmful. Their conclusion is deliberately nuanced: decisions to use structured exercise should be individualised according to patient preference, general physical-activity guidance, comorbidity, and tolerance, rather than justified by an assumed endometriosis-specific benefit. In other words, a woman with endometriosis who enjoys swimming or yoga has every reason to continue for the same reasons exercise benefits anyone else, including cardiovascular and mental health, but she should not be told that the published trial evidence proves it will shrink her pain scores or her symptom burden.

The path forward, the review makes clear, runs through better trials. The evidence base needs larger, adequately powered randomised studies with standardised exercise protocols, validated multidimensional outcome measures such as the Endometriosis Health Profile-30 and the Female Sexual Function Index, pre-registered primary outcomes, and systematic harms reporting. Until such trials exist, the review stands as a corrective to the enthusiasm that has outpaced the data, a reminder that in evidence-based medicine, plausibility is not proof, and that even the most intuitively sensible interventions must earn their clinical recommendations the hard way, one well-designed trial at a time.

Subject of Research: Effects of structured exercise training on pain and symptom burden in women with endometriosis

Article Title: Effects of structured exercise training on pain and multidimensional symptom burden in women with endometriosis: an updated systematic review and meta-analysis

Article References: Sun, M., Zhu, Y., Wang, L., & Liang, W. (2026). Effects of structured exercise training on pain and multidimensional symptom burden in women with endometriosis: an updated systematic review and meta-analysis. BMC Psychology. https://doi.org/10.1186/s40359-026-05724-7

Image Credits: AI Generated

DOI: 10.1186/s40359-026-05724-7

Keywords: endometriosis, structured exercise, systematic review, meta-analysis, chronic pelvic pain, psychological distress, sexual function, quality of life, GRADE, randomised controlled trials, PROSPERO, BMC Psychology

Vulvar cancer is not among the most common malignancies, but its impact on those diagnosed is profound. In the Netherlands, approximately 450 women receive the diagnosis each year, and in roughly one quarter of those cases the tumor involves the clitoris or the tissue immediately surrounding it. Because the disease is located in an area of dense nerve supply and intimate significance, surgery that saves a life can simultaneously alter a patient’s sexual function, body image, and overall quality of life in ways that standard oncological follow-up has historically done little to address. Gynecologic oncologist Mieke ten Eikelder of Radboudumc, who co-developed the new technique, describes the previous standard bluntly: when the tumor sits in or around the clitoris, surgeons sometimes have to remove part of it, and until now the wound was simply closed afterward, with little attention paid to whether orgasm would still be possible.

The new operation, described in the journal Gynecologic Oncology in a paper titled Clitoral reconstructive surgery for patients with vulvar carcinoma, was developed jointly by ten Eikelder and plastic surgeon Tim Nijhuis. Its central insight is that even after a tumor has been removed from the clitoral region, the underlying nerve bundles that carry sensory information can often be preserved and redirected. Rather than accepting the loss of the visible clitoral tip and the sensation that depends on it, the surgical team releases those nerve bundles and repositions them so that they converge to create a new clitoral tip. In effect, the sensory apparatus of the clitoris is gathered and rebuilt rather than discarded, giving the nerve fibers a physical structure through which they can once again generate sensation.

The second key element of the technique is the material used to cover and shape the reconstructed tip. The surgeons use a small graft of buccal mucosa, the moist tissue lining the inside of the cheek. This choice is deliberate and technically elegant. Buccal mucosa closely resembles the tissue found naturally around the vulva in both texture and behavior, making it far better suited to the genital environment than skin taken from elsewhere on the body. Grafts of this type integrate well, remain supple and moist, and provide a covering that mimics the original anatomy closely enough to support rather than blunt sensation. The combination of repositioned nerve bundles and a mucosal graft is what allows the reconstruction to preserve clitoral feeling rather than merely restoring a cosmetic contour.

From the patient’s perspective, one of the most remarkable aspects of the procedure is how little it adds to the existing cancer operation. The reconstruction extends the surgery by only about fifteen minutes. That is a strikingly small increment given what the procedure returns: for women whose tumors would otherwise have cost them clitoral sensation permanently, a quarter of an hour of additional operating time now stands between losing sexual function and keeping a realistic chance of regaining it. Because the reconstruction is performed in the same anesthetic episode as the tumor removal, patients do not face a second major operation, a second hospital stay, or a second period of recovery from surgery.

The early clinical results justify the enthusiasm. Among the first 23 women with vulvar cancer who underwent the reconstruction, ninety percent were able to achieve a clitoral orgasm again after surgery. Sensation typically returned between three and six months after the operation, a timeline that reflects the slow but reliable process of nerve recovery and tissue healing. The surgeons note that the recovery curve is not linear in its early phase. Initially, the reconstructed clitoris may be overly sensitive, or conversely less sensitive than before, but recovery is generally optimal after one year. In most women, sensation ultimately returns to a level comparable to what it was before the cancer surgery, an outcome that would have been considered unattainable only a few years ago.

The forty-year lag between penile and clitoral reconstruction is itself a point the Dutch team makes explicitly, and it speaks to a broader pattern in surgical history. Procedures that restore urinary and sexual function in men were developed, standardized, and taught in training programs long before equivalent attention was paid to female genital reconstruction beyond purely cosmetic or urinary aims. Part of the explanation lies in surgical anatomy: the penis offers a longer structure with accessible nerve and vessel pedicles that lend themselves to tubed flaps, while the clitoris is small, densely innervated, and technically demanding to rebuild in miniature. Part of the explanation, however, lies in how seriously medicine has historically taken female sexual function as an outcome worth measuring and treating. The Radboudumc work signals a shift in that regard, treating orgasm and genital sensation as legitimate reconstructive goals on par with continence or limb function.

The implications extend beyond cancer care. The researchers point out that the same reconstructive principle, repositioning preserved nerve bundles to create a functional clitoral tip and covering it with buccal mucosa, may also help women who have suffered genital mutilation. In those cases, as in cancer surgery, the sensory nerves often remain even when the external anatomy has been removed or altered, and a technique designed to gather those nerves into a new structure could offer a path to restored sensation for a population that has almost never been offered surgical options. While the published experience so far concerns women treated for vulvar carcinoma, the potential application to female genital mutilation gives the technique a reach that could eventually touch millions of women worldwide.

The procedure is now being introduced across the Netherlands as part of a structured scientific research program rather than as an uncontrolled spread of a new operation. Alongside Radboudumc, eight other Dutch hospitals treat vulvar cancer, and all of them are participating in a follow-up project in which gynecologic oncologists and plastic surgeons will be trained in the new technique. Nijhuis and ten Eikelder are also currently training specialists from other countries, an early sign that the developers intend the method to become an international standard rather than the specialty of a single center. This training-first approach reflects a growing consensus in surgical innovation that a new operation is only as good as its dissemination, and that early standardization protects patients from poorly executed imitations.

For all the promise, the researchers themselves are careful about the limits of the current evidence. The initial series of 23 patients is small, and the ninety percent figure, while remarkable, comes from early follow-up rather than long-term study. With financial support from the Dutch Cancer Society, the team will work together with other Dutch hospitals to determine whether the reconstruction truly improves sexual function and quality of life in a rigorous, multicenter evaluation, and how the technique can be safely integrated into everyday clinical care. Those studies will need to confirm that the sensory gains persist over years, that the reconstructed tissue remains healthy over the long term, and that the procedure can be reproduced reliably by surgeons trained outside the originating center. Even with those caveats, the direction of travel is clear. An operation that did not exist a few years ago has given the first group of patients back a dimension of their lives that cancer surgery had taken away, and it has done so with a fifteen-minute addition to the procedure they needed anyway. Forty years after the first penile reconstruction, the surgical playbook has finally caught up, and the women who come after these first 23 patients will enter vulvar cancer treatment knowing that survival and sexual function no longer have to be an either-or choice.

Subject of Research: Clitoral reconstructive surgery for patients with vulvar carcinoma

Article Title: New surgical technique restores the clitoris after treatment for vulvar cancer

Article References: New surgical technique restores the clitoris after treatment for vulvar cancer. (n.d.). Original publication

Image Credits: AI Generated

DOI: Not provided

Keywords: vulvar cancer, clitoral reconstruction, gynecologic oncology, plastic surgery, sexual function, nerve repositioning, buccal mucosa graft, Radboudumc, organ preservation, reconstructive surgery, quality of life, surgical

The research team, led by Ermina Lee and Jules L. Madzia of the University of Cincinnati College of Medicine together with clinicians at Boston Medical Center’s GenderCare Center, set out to characterize patient-reported outcomes after gender-affirming vulvovaginoplasty, a procedure that constructs a neovaginal complex through urethroplasty, clitoroplasty, and labiaplasty. The most common surgical technique is penile inversion, in which the neuromuscular bundles of the glans are retained for clitoral reconstruction. Some patients, however, do not desire a neovagina or face elevated surgical risk, and for them vulvoplasty offers genital remodeling without the creation of a vaginal opening. Surgical management of gender incongruence is highly patient-centered, requiring shared decision-making among patients, mental health providers, and surgeons to balance individual goals for aesthetics and function.

Between August 2019 and May 2022, the researchers contacted 157 patients who had undergone surgery between September 2016 and March 2022 at their institution, where a single team of co-surgeons from urology and plastic surgery performed all procedures. Forty-one patients, or 26.1 percent, completed the electronic consent and post-surgery survey. The participants had a mean age of 45.8 years, and the median time since surgery was 167.5 days, placing most respondents in the relatively early post-operative period when self-exploration of gender identity, sexuality, and sexual function with new anatomy is still evolving. Thirty-two participants had undergone vulvovaginoplasty with creation of a vaginal opening, while nine had vulvoplasty with a zero-depth neovagina. All patients received pelvic floor physical therapy at six weeks post-operatively, including dilation coaching and counseling on sexual exploration with their new anatomy.

The survey instrument was built from adapted versions of two established questionnaires: the Female Genital Self-Image Scale, a seven-item measure of genital satisfaction, and the Female Sexual Function Index, a nineteen-item inventory considered the gold standard for assessing sexual function in heterosexual cisgender women. Because neither tool has been validated for transgender patients assigned male at birth, the researchers selected items with input from patients and gender-affirming care providers, retaining six FGSIS items and nine FSFI items rated on Likert scales. Gender congruence was assessed with seven items relating the experience of gender to quality of life over the prior two weeks, including questions about whether participants had stopped themselves from participating in activities or behaving in certain ways because of gender. Statistical analyses were performed in R, using chi-squared tests for categorical variables and t-tests for continuous variables, with significance set at p less than 0.05.

The results on gender congruence were striking. Although nearly half of participants, 47 percent, reported thinking about gender very often or often, 61 percent said they were seldom or never troubled by issues relating to gender, and 85 percent said they never felt uncertain or confused about their sense of gender. Eighty percent reported being seldom or never stopped from participating in everyday life because of their gender, and 85.3 percent said they rarely or never avoided social situations due to their sense of identity. Perhaps most tellingly, 97.6 percent of participants reported confidence in their ability to lead a satisfied life with their gender identity, a figure that speaks to the central goal of the surgery: aligning the body with the experienced self.

Genital self-image told a similarly positive story. In response to the statement that they felt positively about their genitals, 82.9 percent of participants agreed or strongly agreed, and 76 percent were satisfied with the appearance of their genitals. Most also reported comfort with intimacy and clinical care: 82.9 percent said they would feel comfortable having a sexual partner look at their genitals, and 95 percent said they would feel comfortable having a doctor examine them. Overall, 85.4 percent agreed that their genitals worked the way they were supposed to. These ratings were comparable to those previously reported for cisgender women on adapted versions of the same instruments, suggesting that the surgery can produce self-image outcomes on par with those in the populations for which the measures were originally designed.

Sexual function, by contrast, presented a more complicated picture. Among the 22 participants who had engaged in sexual activity in the past four weeks, only 40.9 percent were satisfied with their ability to reach orgasm, and of those who attempted orgasm, 87 percent reported that it ranged from slightly difficult to impossible. Overall satisfaction with sexual life was low, with 47.5 percent of all participants expressing dissatisfaction and only 32.5 percent expressing satisfaction. Most participants reported feeling sexual desire or interest infrequently, with 47.5 percent experiencing sexual interest only a few times in the past four weeks and 12.5 percent never. Yet here was the study’s most consequential finding: none of these sexual function measures predicted overall surgical satisfaction. Chi-squared tests found no significant association between agreement with the statement that they would have the operation again and procedure type, age, days since surgery, satisfaction with sexual life, satisfaction with genitals, or recent sexual activity.

The dissociation between sexual outcomes and overall well-being was consistent across subgroups. Among sexually active participants, 83.3 percent felt positively about their genitals and 95.8 percent were happier after surgery than before. Among those who had not been recently sexually active, 82.4 percent felt positively about their genitals and 94.1 percent were happier after surgery. In total, 95.1 percent of participants agreed or strongly agreed that they were overall happier after the operation, and 92.5 percent said they would choose to undergo it again. The authors point to prior research supporting this pattern: a study by Buncamper and colleagues found that patient-perceived neovaginal functionality and appearance remained high, averaging eight out of ten, more than four years after surgery, even though over half of that cohort met criteria for sexual dysfunction on the FSFI.

Why does sexual function fail to track with satisfaction? The researchers argue that sexual function is shaped by a fluid web of biological and psychosocial factors, including age, mood, desire, the subjective importance of sex, changes in genital sensation, relationships, sexual preference, and pre-existing pelvic floor dysfunction, which is prevalent among pre-operative patients but can be mitigated with pelvic floor physical therapy. The timing of the survey may also have mattered, with a median of roughly six months since surgery for the full sample and a gap between sexually active and inactive respondents. More fundamentally, the team criticizes the cis-heteronormative assumptions embedded in the FSFI, which conflates gender identity with sexuality and cannot capture how sexuality changes after vulvovaginoplasty. FSFI scores are known to be higher in heterosexual individuals than in LGBTQIA+ individuals, and heterosexual transgender women score higher than homosexual transgender women even when relationship status is equivalent, suggesting the instrument inadequately captures the intersectional experience of gender-affirming surgery.

The study’s limitations are real: a small sample from a single institution, survey tools validated only for cisgender women, no baseline pre-surgical data, and a median follow-up of 5.5 months when sexual outcomes are still evolving. Yet the authors frame the work as pilot data for a new generation of community-specific patient-reported outcome measures, such as the GENDER-Q, now undergoing field testing for transgender and gender-diverse individuals. Their conclusion is provocative and likely to reshape perioperative counseling: measures that weigh sexual function as the primary indicator of surgical success may not fully capture the broader psychosocial benefits of improved gender congruence. For many patients, the ability to move through daily life without gender-related distress, to feel at home in one’s own body, and to lead a satisfied life appears to be the outcome that matters most, and it is one that, according to this survey, gender-affirming surgery delivers at remarkably high rates.

Subject of Research: Patient-reported outcomes of gender-affirming vulvovaginoplasty in transgender adults

Article Title: Post gender-affirming vulvovaginoplasty survey of transgender adults

Article References: Lee, E., Madzia, J. L., Klein, P., Martin, M., Gomes, L., Navarra, M., Oates, R., Slama, J., & Streed, C. G., Jr. (2026). Post gender-affirming vulvovaginoplasty survey of transgender adults. BMC Plastic and Reconstructive Surgery, 2(1), Article 5. https://doi.org/10.1186/s44452-026-00018-8

Image Credits: AI Generated

DOI: 10.1186/s44452-026-00018-8

Keywords: gender-affirming surgery, vulvovaginoplasty, vulvoplasty, transgender health, patient-reported outcomes, genital self-image, sexual function, gender congruence, penile inversion, pelvic floor physical therapy, GENDER-Q, quality of life

The FSFI has been a workhorse of sexual medicine since its introduction in 2000. The 19-item self-report questionnaire assesses six domains of sexual function over the previous four weeks: desire, arousal, lubrication, orgasm, satisfaction, and pain. Respondents rate each item on a scale, and the domain scores are typically summed into a total score, with a widely used clinical cutoff distinguishing women with and without sexual dysfunction. The instrument was developed and validated in general community and clinical samples of adult women, however—not in people navigating the profound hormonal, anatomical, and relational upheavals of pregnancy and the postpartum period. Whether its scores mean the same thing in those populations had remained largely an open question.

To address it, the research team adopted a contemporary, argument-based approach to validity, guided by modern frameworks that treat validity not as a property of the test itself but of the interpretations and decisions built on its scores. Rather than asking simply whether the FSFI is valid, the researchers examined whether specific claims about what FSFI scores mean in perinatal samples are supported by evidence. This matters because perinatal sexual function is not simply typical sexual function in a different context. Hormonal shifts, tissue changes from delivery, breastfeeding, fatigue, and the psychological transition to parenthood all reshape sexual response in ways that a questionnaire designed for other populations may or may not capture.

The centerpiece of the investigation was a series of factor analyses, statistical techniques that test whether the pattern of people’s answers matches the structure the questionnaire assumes. The results offered a clear verdict on one front: the six-domain structure of the FSFI—desire, arousal, lubrication, orgasm, satisfaction, and pain—was supported in sexually active pregnant and postpartum individuals. In other words, the questionnaire’s underlying architecture holds together in this population, and each domain appears to tap a distinct, coherent aspect of sexual function. That finding gives researchers license to continue using and interpreting the six domain scores with reasonable confidence in perinatal research.

The same could not be said for the total score. Models that assumed a single overarching dimension of sexual function underlying all the items—essentially, the assumption baked into summing everything into one number—were not supported by the data. This is a technically significant result. When a unidimensional model fails, it means the domains are not interchangeable reflections of one common construct, and a total score risks blending genuinely different phenomena into a single, potentially misleading figure. A person might score low overall because of pain alone, for example, while their desire, arousal, and satisfaction remain intact—clinically meaningful distinctions that a total score would obscure. The authors’ conclusion on this point is unambiguous: the use of an FSFI total score is not supported in pregnant and postpartum samples.

Item response theory analyses added a second layer of nuance. These models examine how well each individual item distinguishes between people at different levels of the underlying trait. The findings showed that FSFI items discriminated well at low-to-average levels of sexual function but performed less effectively at higher levels. In practical terms, the questionnaire is most informative for pregnant and postpartum individuals who have poorer sexual function or who are experiencing sexual difficulties. For people functioning well, the items become less precise, meaning small differences among high-functioning individuals may not be reliably captured. This has a silver lining for clinical and research applications focused on identifying and understanding sexual problems, but it cautions against over-interpreting fine-grained differences among people reporting generally healthy sexual function.

The researchers also examined how FSFI domain scores relate to external variables, a standard strategy for testing whether a measure behaves the way theory says it should. With a few exceptions, this evidence indicated that the domain scores are sensitive to real individual differences in sexual function and can distinguish between individuals with and without distressing sexual difficulties. That is, the domains correlate with other measures in sensible ways and show the kind of clinical sensitivity that a useful assessment tool requires. Two domains, however, showed weaker performance: sexual arousal and sexual satisfaction. The authors advise that results from these two domains, like the total score, be interpreted with particular caution in perinatal samples until further evidence accumulates.

The stakes of this psychometric housekeeping are higher than they might appear. Perinatal sexual dysfunction is associated with depression symptoms, relationship dissatisfaction, and distress for both members of a couple, and researchers have increasingly documented trajectories of sexual well-being across the transition to parenthood. Interventions are being developed to support couples’ sexual health during this period, and clinical conversations about resuming intercourse after childbirth depend on accurate assessment. If the field’s dominant measurement tool were quietly mismeasuring these constructs, studies could reach distorted conclusions, clinical cutoffs could misclassify people, and patients’ experiences could be misunderstood. This study provides a foundation of evidence showing which parts of the instrument can be trusted in this population and which cannot.

The work also exemplifies a broader shift in how psychological and sexual health measures are evaluated. Older validation studies often reported a handful of statistics and declared an instrument valid or invalid. Contemporary validity theory, by contrast, builds an integrated argument, weighing evidence from internal structure, item-level performance, and relations to external variables to evaluate specific claims about score interpretation. By applying this framework to the FSFI, the researchers modeled a more rigorous standard for sexuality research, where measurement quality has historically received less scrutiny than in other areas of psychology. The study’s data and analysis code were also made publicly available through the Open Science Framework, supporting transparency and reuse.

For now, the practical guidance is clear. Researchers studying pregnancy and the postpartum period can continue to use the FSFI’s six domain scores as meaningful indicators of the underlying constructs, and the measure appears well suited to identifying individuals with sexual difficulties. But the familiar habit of reporting a single total FSFI score should end in perinatal research, and the arousal and satisfaction domains warrant cautious interpretation. The authors note that further research is needed to address the limitations identified, including the weaker performance at higher levels of function. Until that evidence arrives, this study offers the field something it has long lacked: a clear, evidence-based map of what one of sexual medicine’s most widely used questionnaires can—and cannot—reliably tell us about sexual health during one of life’s most transformative transitions.

Subject of Research: Validation of the Female Sexual Function Index for measuring sexual function in pregnant and postpartum individuals

Article Title: A Validation Study of the Female Sexual Function Index for Use in Pregnant and Postpartum Samples

Article References: Santos-Iglesias, P., Rosen, N. O., & Dawson, S. J. (2026). A Validation Study of the Female Sexual Function Index for Use in Pregnant and Postpartum Samples. Archives of Sexual Behavior, 55(6), 2523-2541. https://doi.org/10.1007/s10508-026-03519-w

Image Credits: AI Generated

DOI: 10.1007/s10508-026-03519-w

Keywords: Female Sexual Function Index, sexual function, pregnancy, postpartum, psychometric validation, factor analysis, item response theory, sexual dysfunction, perinatal health, validity theory, Archives of Sexual Behavior, measurement invariance

The study, which included 618 individuals—52 percent of them women and 2 percent gender-diverse—collected self-report data at two time points separated by twelve months. This prospective design matters enormously. Most previous research relied on cross-sectional snapshots, capturing a single moment in time and asking participants about their pornography use and their sexual satisfaction, function, and distress simultaneously. Such designs cannot establish which comes first: does pornography use shape sexual well-being, or do people who feel dissatisfied turn to pornography? By measuring pornography-related variables at baseline and sexual well-being outcomes a year later, the researchers could examine temporal ordering, a critical step toward disentangling cause and consequence, even though the study still cannot prove causation in the strict experimental sense.

Methodologically, the study is notable for its dyadic architecture. Rather than treating each individual as an independent data point, the team used the actor-partner interdependence framework, a statistical approach that explicitly models how one person’s characteristics influence not only their own outcomes—so-called actor effects—but also their partner’s outcomes, known as partner effects. Within this framework, they conducted autoregressive cross-lagged analyses, meaning each outcome at follow-up was predicted both by the same outcome at baseline and by the pornography-related variables measured a year earlier. Gender was tested as a moderator, allowing the researchers to determine whether the pathways linking pornography use to sexual well-being differed for men, women, and gender-diverse individuals. The analysis plan and hypotheses were preregistered, and the team applied the Benjamini–Hochberg correction during the review process to control the false discovery rate across their many statistical tests.

The researchers deliberately moved beyond the single crude measure—frequency of use—that has dominated the field. Instead, they assessed three distinct dimensions. The first was simple frequency of pornography use. The second comprised eight different motivations for use, ranging from sexual pleasure and self-exploration to boredom avoidance and coping with negative emotions. The third was problematic pornography use, a construct capturing loss of control, continued use despite negative consequences, and distress, which is conceptually and empirically distinct from high-frequency use; prior work has shown that many frequent users experience no impairment whatsoever, while some infrequent users report significant distress, often tied to moral incongruence between their behavior and their values.

The results revealed a strikingly gendered picture. Among men, higher scores on sexual pleasure and self-exploration motivations were associated with better sexual function not only in the men themselves but also in their partners one year later. This partner effect is particularly intriguing: it suggests that when a man uses pornography in pursuit of pleasure or self-understanding, his partner’s sexual functioning may actually improve over the following year. The researchers propose that such motivations may reflect a positive, curious orientation toward sexuality that spills over into the couple’s shared sexual life, perhaps through greater communication, openness, or sexual experimentation. This stands in sharp contrast to the alarmist narrative that a partner’s pornography use inevitably damages the couple’s intimate life.

By contrast, the picture for women and gender-diverse participants was markedly different. For these individuals, problematic pornography use at baseline predicted their partner’s lower sexual function one year later. In other words, when a woman or gender-diverse person experienced their own pornography use as out of control or distressing, their partner’s sexual functioning deteriorated over the following year. This partner effect underscores a central theme of the study: the consequences of pornography use within couples are not confined to the user. Sexual well-being, the authors note, is inherently interpersonal, shaped by the desires, behaviors, and psychological states of both partners. A dyadic lens reveals dynamics that individual-level studies simply cannot detect.

Notably, the study also found evidence of reverse pathways: baseline indicators of sexual well-being were themselves associated with pornography use one year later. The authors acknowledged these findings in their supplemental materials, proposing potential explanations there, while keeping the main text focused on their theory-driven hypotheses about how pornography-related characteristics predict later sexual well-being. This bidirectionality is a valuable reminder that the relationship between sexual behavior and sexual well-being is likely a feedback loop rather than a one-way street. A person experiencing sexual distress may turn to pornography as a coping mechanism, and that coping behavior may in turn reshape the couple’s sexual dynamic, creating cycles that are difficult to untangle with any single study design.

The study was not without its methodological compromises, which the authors disclosed with unusual transparency. The original preregistration, filed in December 2019, had proposed latent growth curve models within the actor-partner interdependence framework, and it had also planned to test sex mindset—beliefs about the malleability of one’s sexual life—as a moderator. The team ultimately opted for autoregressive cross-lagged models, which better matched their research questions about predicting sexual well-being one year later, and they tested only gender as a moderator for the sake of feasibility. They also noted that hypotheses were slightly updated to reflect studies published since the original preregistration. Such candor about deviations from preregistered plans is increasingly regarded as a hallmark of credible psychological science, where undisclosed analytic flexibility has historically inflated the field’s false-positive rate.

The broader implications reach into both research practice and clinical work. For researchers, the message is clear: studies that collapse pornography use into a single frequency measure, treat individuals rather than couples as the unit of analysis, and exclude gender-diverse participants are likely to produce findings that are misleading or uninterpretable. The inconsistencies that have plagued the literature for years may dissolve once frequency, motivation, and problematic use are separated and gender is modeled explicitly. For therapists, the findings suggest that assessments of a couple’s sexual difficulties should not treat pornography use as uniformly problematic. Instead, clinicians may need to explore the motivations behind use and whether the use feels compulsive or distressing, since these dimensions carry different prognostic weight for each partner. The gender-specific partner effects, in particular, hint that interventions targeting problematic use in women and gender-diverse individuals could yield benefits that extend beyond the individual to the couple as a whole.

Ultimately, this study reframes a polarized public debate with a dose of empirical subtlety. Pornography use, the findings suggest, is neither a universal poison nor a harmless pastime; its correlates within couples depend on who is using it, why, and whether the use has taken on a problematic character. As the authors conclude, understanding the interrelations between pornography use and sexual well-being requires longitudinal, dyadic, and gender-inclusive approaches—and this study delivers all three. With data and materials available to qualified researchers upon justified request, and with the analysis preregistered and corrections transparently documented, the work offers a template for how a contested and often sensationalized topic can be studied with rigor. For the millions of couples navigating questions about pornography in their relationships, the science is finally beginning to speak with more precision than panic.

Subject of Research: Prospective dyadic associations between pornography use frequency, motivations, problematic use, and couples' sexual well-being

Article Title: Associations Between Frequency, Motivations, and Problematic Pornography Use and Sexual Well-Being: A Dyadic Prospective Study Among Couples

Article References: Associations Between Frequency, Motivations, and Problematic Pornography Use and Sexual Well-Being: A Dyadic Prospective Study Among Couples. (n.d.). https://doi.org/10.1007/s10508-026-03505-2

Image Credits: AI Generated

DOI: 10.1007/s10508-026-03505-2

Keywords: pornography use, sexual well-being, couples, dyadic analysis, problematic pornography use, sexual satisfaction, sexual function, gender differences, longitudinal study, actor-partner interdependence model, sexual distress, Archives of Sexual Behavior

The thyroid is a small, butterfly-shaped gland at the base of the neck, but its influence during pregnancy is enormous. Its hormones help regulate fetal brain development, metabolic rate, and cardiovascular adaptation to gestation. In early pregnancy, the placental hormone human chorionic gonadotropin suppresses TSH, the pituitary signal that tells the thyroid to work, which is why pregnancy-specific reference ranges for TSH are lower than those used in the general population. When the gland cannot keep pace, TSH rises, a pattern often labeled subclinical hypothyroidism when free thyroxine remains normal. Whether mild elevations of this signal harm the mother’s mental state has remained contested, with previous studies producing a patchwork of conflicting results.

Researchers led by Havva Betul Bacak of the University of Health Sciences Gaziosmanpasa Training and Research Hospital in Istanbul designed a prospective observational cohort to address that question directly. Between November 2025 and January 2026, they recruited 208 pregnant women attending antenatal care at their institution. Before any clinical examination or blood draw, each participant completed a battery of well-validated self-report questionnaires: the Beck Depression Inventory, the Beck Anxiety Inventory, the Arizona Sexual Experiences Scale, and the 13-item Turkish Short-Form Quality of Life questionnaire. Completing the psychometric instruments before the medical evaluation was a deliberate design choice, intended to prevent a physician’s assessment or discussion of thyroid results from coloring the women’s self-reported emotional state.

After predefined exclusions, the analytic sample settled at 192 women. The investigators excluded anyone with autoimmune thyroid disease, current thyroid medication use, and other conditions that could confound thyroid physiology, and women whose TSH measured at or above 2.5 mIU/L were referred for endocrinology consultation as part of standard care. The final cohort split into 102 women with TSH below 2.5 mIU/L and 90 women at or above that cutoff. Critically, the two groups were statistically indistinguishable in age, gestational age, number of previous pregnancies, parity, and body mass index, which strengthens the interpretation that differences in psychological scores were not simply reflections of different demographic profiles.

The headline result was clear and consistent for mood. Median scores on the Beck Depression Inventory were 13.0 in the higher-TSH group versus 10.0 in the lower-TSH group, a difference that reached statistical significance with a p-value of 0.002. The Beck Anxiety Inventory told a similar story, with median scores of 11.0 versus 8.0 and a p-value of 0.009. While these are moderate symptom scores rather than diagnoses of major depressive disorder, the direction and consistency of the shift across two independent instruments is notable. Perinatal depression affects roughly one in seven women worldwide by some estimates, and anxiety disorders in pregnancy are similarly common, so any physiological marker that tracks with symptom burden is clinically interesting even if the effect is modest.

Equally interesting was what did not change. Scores on the sexual function scale and the quality-of-life instrument showed no statistically significant differences between the TSH groups, with p-values of 0.400 and 0.068 respectively. This dissociation is intriguing because mood, sexual function, and quality of life are typically intertwined. The authors suggest that quality-of-life changes may emerge at higher degrees of thyroid dysfunction, or that pregnancy itself dampens the measurable influence of mild thyroid signals on sexuality, since expectant mothers report sexual difficulties at high rates regardless of thyroid status. The mood findings, by contrast, appear to register the thyroid signal more sensitively.

Beyond the fixed 2.5 mIU/L cutoff, the researchers performed exploratory pairwise analyses using finer TSH strata. The first detectable separation in depression scores appeared between women below 2.5 mIU/L and those in the 2.5 to below 4.5 mIU/L band, with a p-value of 0.007, while comparisons between the 2.5 to below 4.5 and the 4.5-and-above groups were not significant for any of the four measures. In complementary analyses treating TSH as a continuous variable, higher maternal TSH was weakly but monotonically associated with higher depression and anxiety scores and lower quality of life, with no evidence of a nonlinear or threshold-like relationship. In other words, the data hint that the psychological gradient may begin at the lower end of the elevated range rather than accumulating only after TSH climbs far above it.

The authors are careful, and appropriately so, about what these findings cannot establish. The study did not measure free thyroxine or thyroid peroxidase antibodies, two variables that international guidelines consider essential for classifying thyroid dysfunction during pregnancy. It relied on a fixed pragmatic TSH cutoff rather than trimester-specific reference intervals, which recent individual-participant-data meta-analyses have shown vary substantially across populations and assay methods. The statistical comparisons were unadjusted, without multivariable models accounting for potential confounders, and the single-center design limits generalizability. The team explicitly frames the results as exploratory and hypothesis-generating, not as evidence of an independent or causal association between TSH and mental health. Reverse causation remains plausible too: women experiencing more depressive or anxious symptoms may have different neuroendocrine profiles for reasons unrelated to thyroid pathology.

Nevertheless, the study lands in an active and consequential scientific conversation. The American Thyroid Association, the American College of Obstetricians and Gynecologists, and other professional bodies have long disagreed about whether a 2.5 mIU/L TSH threshold should trigger treatment, and large trials of levothyroxine therapy for mild thyroid abnormalities in pregnancy have generally failed to show clear benefits for cognitive or obstetric outcomes. Prior research has linked antenatal thyroid measures to postpartum depression, and meta-analyses have connected overt hypothyroidism with female sexual dysfunction, but data on subclinical elevations and psychological well-being during gestation itself have been sparse and inconsistent. By collecting psychometric data prospectively, before clinical interaction, and by examining sexual function and quality of life alongside mood, the Turkish team has added a rarely explored angle to the debate.

The practical implications, for now, are more about research design than treatment. The monotonic, weak association between TSH and mood symptoms suggests that if a real psychological effect of mild thyroid underactivity in pregnancy exists, it is subtle and distributed across the upper range of normal rather than concentrated above any sharp threshold. That pattern argues for studies that measure free hormones and antibodies, apply trimester-specific reference intervals, adjust for psychosocial confounders, and follow women into the postpartum period, where the consequences of untreated perinatal mood disorders are best documented. In the meantime, the study offers clinicians a reminder that the familiar TSH value on a prenatal panel may be worth reading not only as a metabolic number but as a potential, if still unproven, window into the emotional landscape of pregnancy.

Subject of Research: Maternal thyroid-stimulating hormone levels and their association with depression, anxiety, sexual function, and quality of life during pregnancy.

Article Title: Association of Maternal Thyroid-stimulating Hormone Levels with Psychological Well-being, Sexual Function, and Quality of Life During Pregnancy

Article References: Bacak, H. B., Ketenci Gencer, F., Coskun, E. S., Irice, F., Aciyiyen, Y., Terkan, H., Celikoglu Berker, E., Deligozoglu, S., Kumbasar, S., & Salman, S. (2026). Association of Maternal Thyroid-stimulating Hormone Levels with Psychological Well-being, Sexual Function, and Quality of Life During Pregnancy. Reproductive Sciences. https://doi.org/10.1007/s43032-026-02206-4

Image Credits: AI Generated

DOI: 10.1007/s43032-026-02206-4

Keywords: pregnancy, thyroid-stimulating hormone, TSH, depression, anxiety, sexual function, quality of life, subclinical hypothyroidism, prenatal care, Reproductive Sciences, Association, Maternal