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Miscarriage is generally defined as the loss of a pregnancy before viability. An estimated 23 million miscarriages occur every year worldwide, translating to 44 pregnancy losses each minute. The pooled risk of miscarriage is 15·3% (95% CI 12·5–18·7%) of all recognised pregnancies. The population prevalence of women who have had one miscarriage is 10·8% (10·3–11·4%), two miscarriages is 1·9% (1·8–2·1%), and three or more miscarriages is 0·7% (0·5–0·8%). Risk factors for miscarriage include very young or older female age (younger than 20 years and older than 35 years), older male age (older than 40 years), very low or very high body-mass index, Black ethnicity, previous miscarriages, smoking, alcohol, stress, working night shifts, air pollution, and exposure to pesticides. The consequences of miscarriage are both physical, such as bleeding or infection, and psychological. Psychological consequences include increases in the risk of anxiety, depression, post-traumatic stress disorder, and suicide. Miscarriage, and especially recurrent miscarriage, is also a sentinel risk marker for obstetric complications, including preterm birth, fetal growth restriction, placental abruption, and stillbirth in future pregnancies, and a predictor of longer-term health problems, such as cardiovascular disease and venous thromboembolism. The costs of miscarriage affect individuals, health-care systems, and society. The short-term national economic cost of miscarriage is estimated to be £471 million per year in the UK. As recurrent miscarriage is a sentinel marker for various obstetric risks in future pregnancies, women should receive care in preconception and obstetric clinics specialising in patients at high risk. As psychological morbidity is common after pregnancy loss, effective screening instruments and treatment options for mental health consequences of miscarriage need to be available. We recommend that miscarriage data are gathered and reported to facilitate comparison of rates among countries, to accelerate research, and to improve patient care and policy development.

This systematic review and meta-analysis was designed to investigate whether maternal psychological stress and recent life events are associated with an increased risk of miscarriage. A literature search was conducted to identify studies reporting miscarriage in women with and without history of exposure to psychological stress (the only exposure considered). The search produced 1978 studies; 8 studies were suitable for analysis. A meta-analysis was performed using a random-effects model with effect sizes weighted by the sampling variance. The risk of miscarriage was significantly higher in women with a history of exposure to psychological stress (OR 1.42, 95% CI 1.19–1.70). These findings remained after controlling for study type (cohort and nested case-control study OR 1.33 95% CI 1.14–1.54), exposure types (work stress OR 1.27, 95% CI 1.10–1.47), types of controls included (live birth OR 2.82 95% CI: 1.64–4.86). We found no evidence that publication bias or study heterogeneity significantly influenced the results. Our finding provides the most robust evidence to date, that prior psychological stress is harmful to women in early pregnancy.

Prenatal loss, the death of a fetus/child through miscarriage or stillbirth, is associated with significant depression and anxiety, particularly in a subsequent pregnancy. This study examined the degree to which symptoms of depression and anxiety associated with a previous loss persisted following a subsequent successful pregnancy. Data were derived from the Avon Longitudinal Study of Parents and Children cohort, a longitudinal cohort study in the west of England that has followed mothers from pregnancy into the postnatal period. A total of 13,133 mothers reported on the number and conditions of previous perinatal losses and provided self-report measures of depression and anxiety at 18 and 32 weeks' gestation and at 8 weeks and 8, 21 and 33 months postnatally. Controls for pregnancy outcome and obstetric and psychosocial factors were included. Generalised estimating equations indicated that the number of previous miscarriages/stillbirths significantly predicted symptoms of depression (β = 0.18, s.e. = 0.07, P<0.01) and anxiety (β = 0.14, s.e. = 0.05, P<0.01) in a subsequent pregnancy, independent of key psychosocial and obstetric factors. This association remained constant across the pre- and postnatal period, indicating that the impact of a previous prenatal loss did not diminish significantly following the birth of a healthy child. Depression and anxiety associated with a previous prenatal loss shows a persisting pattern that continues after the birth of a subsequent (healthy) child. Interventions targeting women with previous prenatal loss may improve the health outcomes of women and their children.

This editorial examines recruitment challenges during a qualitative study on LGBTIQA+ experiences of miscarriage. Despite targeted outreach, engagement was low, prompting reflection on broader barriers. We suggest four key factors: systemic discrimination in medicine and law; the small number of LGBTIQA+ people who have pursued conception and experienced miscarriage; increasing hostility toward LGBTIQA+ communities; and the psychosocial sensitivity of the topic. These challenges reflect wider patterns of exclusion from reproductive health and research. We argue for academic advocacy to address these inequities and to protect the rights and visibility of LGBTIQA+ people in health research and beyond.

ObjectiveObservational studies indicate an association between working nights and miscarriage, but inaccurate exposure assessment precludes causal inference. Using payroll data with exact and prospective measurement of night work, the objective was to investigate whether working night shifts during pregnancy increases the risk of miscarriage.MethodsA cohort of 22 744 pregnant women was identified by linking the Danish Working Hour Database (DWHD), which holds payroll data on all Danish public hospital employees, with Danish national registers on births and admissions to hospitals (miscarriage). The risk of miscarriage during pregnancy weeks 4–22 according to measures of night work was analysed using Cox regression with time-varying exposure adjusted for a fixed set of potential confounders.ResultsIn total 377 896 pregnancy weeks (average 19.7) were available for follow-up. Women who had two or more night shifts the previous week had an increased risk of miscarriage after pregnancy week 8 (HR 1.32 (95% CI 1.07 to 1.62) compared with women, who did not work night shifts. The cumulated number of night shifts during pregnancy weeks 3–21 increased the risk of miscarriages in a dose-dependent pattern.ConclusionsThe study corroborates earlier findings that night work during pregnancy may confer an increased risk of miscarriage and indicates a lowest observed threshold level of two night shifts per week.

Background Pregnancy loss is common and several factors (e.g. chromosomal anomalies, parental age) are known to increase the risk of occurrence. However, much existing research focuses on recurrent loss; comparatively little is known about the predictors of a first miscarriage. Our objective was to estimate the population-level prevalence of miscarriages and to assess the contributions of clinical, social, and health care use factors as predictors of the first detected occurrence of these losses. Methods In this population-based cohort study, we used linked administrative health data to estimate annual rates of miscarriage in the Manitoba population from 2003 to 2014, as a share of identified pregnancies. We compared the unadjusted associations between clinical, social, and health care use factors and first detected miscarriage compared with a live birth. We estimated multivariable generalized linear models to assess whether risk factors were associated with first detected miscarriage controlling for other predictors. Results We estimated an average annual miscarriage rate of 11.3%. In our final sample ( n  = 79,978 women), the fully-adjusted model indicated that use of infertility drugs was associated with a 4 percentage point higher risk of miscarriage (95% CI 0.02, 0.06) and a past suicide attempt with a 3 percentage point higher risk (95% CI -0.002, 0.07). Women with high morbidity were twice as likely to experience a miscarriage compared to women with low morbidity (RD = 0.12, 95% CI 0.09, 0.15). Women on income assistance had a 3 percentage point lower risk (95% CI -0.04, -0.02). Conclusions We estimate that 1 in 9 pregnant women in Manitoba experience and seek care for a miscarriage. After adjusting for clinical factors, past health care use and morbidity contribute important additional information about the risk of first detected miscarriage. Social factors may also be informative.

Background Miscarriage can be a devastating event for women and men that can lead to short- and long-term emotional distress. Studies have reported associations between miscarriage and depression, anxiety, and post-traumatic stress disorder in women. Men can also experience intense grief and sadness following their partner’s miscarriage. While numerous studies have reported hospital-related factors impacting the emotional wellbeing of parents experiencing miscarriage, there is a lack of review evidence which synthesises the findings of current research. Aims The aim of this review was to synthesise the findings of studies of emotional distress and wellbeing among women and men experiencing miscarriage in hospital settings. Methods A systematic search of the literature was conducted in October 2020 across three different databases (CINAHL, MEDLINE and PsycInfo) and relevant charity organisation websites, Google, and OpenGrey. A Mixed Methods appraisal tool (MMAT) and AACODS checklist were used to assess the quality of primary studies. Results Thirty studies were included in this review representing qualitative ( N  = 21), quantitative ( N  = 7), and mixed-methods ( N  = 2) research from eleven countries. Findings indicated that women and men’s emotional wellbeing is influenced by interactions with health professionals, provision of information, and the hospital environment. Parents’ experiences in hospitals were characterised by a perceived lack of understanding among healthcare professionals of the significance of their loss and emotional support required. Parents reported that their distress was exacerbated by a lack of information, support, and feelings of isolation in the aftermath of miscarriage. Further, concerns were expressed about the hospital environment, in particular the lack of privacy. Conclusion Women and men are dissatisfied with the emotional support received in hospital settings and describe a number of hospital-related factors as exacerbators of emotional distress. Implications for practice This review highlights the need for hospitals to take evidence-informed action to improve emotional support services for people experiencing miscarriage within their services.

Background The risk factors for post-traumatic stress disorder (PTSD) and its relationship with alexithymia and intolerance of uncertainty (IU) remain unclear in patients undergoing frozen-thawed embryo transfer (FET) with a history of early pregnancy loss (EPL). This study aims to investigate the prevalence and contributing factors of PTSD symptoms in FET patients with prior EPL and to examine the associations among IU, alexithymia, and PTSD in this population. Methods This study employed a cross-sectional design. A total of 270 participants were recruited through convenience sampling from a gynecology and obstetrics hospital in Zhejiang Province, Mainland China, between June 2024 and January 2025. They were asked to complete a set of questionnaires, comprising the General Information Questionnaire, the Toronto Alexithymia Scale, the Post-Traumatic Stress Disorder Checklist-Civilian Version, and the Intolerance of Uncertainty Scale. Multiple linear regression was used to identify factors associated with PTSD symptoms, and a mediation analysis was conducted to test the mediating role of IU. Results The mean PTSD score among patients with a history of EPL after FET was (36.89 ± 13.89), with a positive screening rate of 39.02%. PTSD symptoms were positively correlated with both alexithymia ( r  = 0.469, P  < 0.01) and IU ( r  = 0.662, P  < 0.01). Multiple linear regression analysis identified alexithymia and IU as significant factors influencing PTSD symptoms. Furthermore, mediation analysis showed that IU partially mediated the relationship between alexithymia and PTSD, accounting for 61.0% of the total effect. Conclusion This study identified relatively high alexithymia and PTSD scores among patients with a history of EPL after FET, accompanied by elevated levels of IU. The findings revealed a significant positive correlation between alexithymia and PTSD symptoms, and also confirmed that IU was significantly associated with both. Clinically, these observed correlations suggest that integrating routine screening for PTSD, alexithymia, and IU into clinical practice could provide an evidence-based strategy for improving the management of this population.

Background Historically, men’s experiences of grief following pregnancy loss and neonatal death have been under-explored in comparison to women. However, investigating men’s perspectives is important, given potential gendered differences concerning grief styles, help-seeking and service access. Few studies have comprehensively examined the various individual, interpersonal, community and system/policy-level factors which may contribute to the intensity of grief in bereaved parents, particularly for men. Methods Men ( N = 228) aged at least 18 years whose partner had experienced an ectopic pregnancy, miscarriage, stillbirth, termination of pregnancy for foetal anomaly, or neonatal death within the last 20 years responded to an online survey exploring their experiences of grief. Multiple linear regression analyses were used to examine the factors associated with men’s grief intensity and style. Results Men experienced significant grief across all loss types, with the average score sitting above the minimum cut-off considered to be a high degree of grief. Men’s total grief scores were associated with loss history, marital satisfaction, availability of social support, acknowledgement of their grief from family/friends, time spent bonding with the baby during pregnancy, and feeling as though their role of ‘supporter’ conflicted with their ability to process grief. Factors contributing to grief also differed depending on grief style. Intuitive (emotion-focused) grief was associated with support received from healthcare professionals. Instrumental (activity-focused) grief was associated with time and quality of attachment to the baby during pregnancy, availability of social support, acknowledgement of men’s grief from their female partner, supporter role interfering with their grief, and tendencies toward self-reliance. Conclusions Following pregnancy loss and neonatal death, men can experience high levels of grief, requiring acknowledgement and validation from all healthcare professionals, family/friends, community networks and workplaces. Addressing male-specific needs, such as balancing a desire to both support and be supported, requires tailored information and support. Strategies to support men should consider grief styles and draw upon father-inclusive practice recommendations. Further research is required to explore the underlying causal mechanisms of associations found.