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Chapter 6 identifies the doctrine of diminished responsibility as the closest antecedent of the Universal Partial Defence (UPD), and a suitable template from which to forge the proposal. Taking a particularised theoretical approach, the chapter draws on case law and empirical studies to arrive at a more fine-grained account of the operation of the defence. It reveals a penumbral approach to its interpretation in the courts, through the subtle inclusion of factors that sit at the edge of what might be considered a recognised medical condition or mental disorder. The chapter maintains that this flexibility suggests a stomach for moral complexity on the part of fact-finders, arguing for a broader, normative test that can include consideration of circumstance, as the basis of the UPD. The analysis considers the role of key decision-makers, and it serves to inform the development of a bounded causal theory of partial excuse in Chapter 7.
Patients with posttraumatic stress disorder (PTSD) exhibit smaller regional brain volumes in commonly reported regions including the amygdala and hippocampus, regions associated with fear and memory processing. In the current study, we have conducted a voxel-based morphometry (VBM) meta-analysis using whole-brain statistical maps with neuroimaging data from the ENIGMA-PGC PTSD working group.
Methods
T1-weighted structural neuroimaging scans from 36 cohorts (PTSD n = 1309; controls n = 2198) were processed using a standardized VBM pipeline (ENIGMA-VBM tool). We meta-analyzed the resulting statistical maps for voxel-wise differences in gray matter (GM) and white matter (WM) volumes between PTSD patients and controls, performed subgroup analyses considering the trauma exposure of the controls, and examined associations between regional brain volumes and clinical variables including PTSD (CAPS-4/5, PCL-5) and depression severity (BDI-II, PHQ-9).
Results
PTSD patients exhibited smaller GM volumes across the frontal and temporal lobes, and cerebellum, with the most significant effect in the left cerebellum (Hedges’ g = 0.22, pcorrected = .001), and smaller cerebellar WM volume (peak Hedges’ g = 0.14, pcorrected = .008). We observed similar regional differences when comparing patients to trauma-exposed controls, suggesting these structural abnormalities may be specific to PTSD. Regression analyses revealed PTSD severity was negatively associated with GM volumes within the cerebellum (pcorrected = .003), while depression severity was negatively associated with GM volumes within the cerebellum and superior frontal gyrus in patients (pcorrected = .001).
Conclusions
PTSD patients exhibited widespread, regional differences in brain volumes where greater regional deficits appeared to reflect more severe symptoms. Our findings add to the growing literature implicating the cerebellum in PTSD psychopathology.
The current case study was completed as part of the routine psychological therapy delivered in a Critical Care Psychology Service in the United Kingdom. For families of critically ill patients, an admission to the intensive care unit (ICU) can be a distressing and potentially traumatic experience. Relatives of ICU patients may, therefore, face ongoing psychological difficulties after their loved one’s discharge from hospital, an experience recognised as Post-Intensive Care Syndrome - Family (PICS-F). Psychological morbidity associated with PICS-F includes post-traumatic stress disorder (PTSD). Despite high rates of PTSD within this population, there are currently no published guidelines available for the treatment of PTSD in relatives following an ICU admission. Clinicians working in this field are consequently required to adapt existing psychological models and protocols recommended for treating PTSD, for application to ICU-related traumatic stressors. This case study describes how cognitive therapy for PTSD (CT-PTSD) was tailored to treat a 60-year-old female experiencing PTSD following her husband’s admission to the ICU. It also illustrates how critical illness can be conceptualised as an intangible loss that triggers a grief experience for relatives of ICU patients, causing PTSD symptoms to persist. The client attended 14 weekly sessions of CT-PTSD. Treatment included cognitive strategies for panic, imaginal re-living and a site visit, as well as consideration of the role of non-death loss and disenfranchised grief in the client’s experiences. At the end of treatment, the client no longer presented with clinically significant symptoms of PTSD, as assessed on the Impact of Events Scale-Revised (IES-R).
Key learning aims
It is hoped that this case study will enhance the reader’s understanding of the following areas:
(1) The delivery of CT-PTSD when working with relatives of former patients admitted to the ICU.
(2) The experiences of intangible loss and disenfranchised grief for relatives of former ICU patients and how these can contribute to the maintenance of PTSD symptoms.
(3) The utility of the dual process model (DPM; Stroebe and Schut, 1999) as a framework when adapting the CT-PTSD model to the context of supporting relatives of former ICU patients.
The Kahramanmaras Earthquakes (2023) are the largest and most devastating earthquakes in the history of the Republic. The effects of these earthquakes are particularly deeply felt among younger generations and trigger various psychological factors. Therefore, the aim of this study is to measure the levels of post-traumatic stress disorder (PTSD), social phobia (SP), generalized anxiety disorder (GAD), and depression on separation anxiety disorder (SAD) among adolescent earthquake survivors affected by the Kahramanmaras Earthquakes (2023).
Methods
In the study, the data were obtained using a survey method. A total of 605 adolescent earthquake survivors exposed to the Kahramanmaras earthquakes were reached. The research was analyzed using structural equation modeling (SEM).
Results
Surprisingly, according to the research findings, there was no significant and positive relationship between SP (β = −0.006, P > 0.05) and Depression (β = −0.117, P > 0.05) on SAD.
Conclusions
Consequently, while PTSD and GAD had significant and positive effects on SAD in those adolescent earthquake survivors affected by the Kahramanmaras Earthquakes (2023), SP and Depression did not have significant and positive effects on SAD. Therefore, it is recommended that future studies examine the effects of SP and Depression on SAD more comprehensively and in detail through qualitative research.
The Resilience Hub was established to coordinate mental health and psychosocial support for anyone affected by the 2017 Manchester Arena terrorist attack.
Aims
To use the Hub’s mental health screening data to examine the variation in symptoms reported by children and young persons (CYP) and their parent/guardian and explore any association with time delay in post-event registration or parental distress.
Method
CYP engaging with Hub services were separated into eight ‘admission’ groups depending on when they registered post-incident. CYP were screened for trauma, depression, and generalised and separation anxiety. Parents/guardians also completed screening measures for their own and their child’s anxiety. Baseline and follow-up scores were compared between admission groups. Parental and CYP assessments of the CYP’s anxiety score was compared with the measure of parental distress.
Results
Almost half of CYP registered in the first 3 months of service launch, with numbers of new registrations falling during each subsequent screening cycle. Generally, there was an increase in baseline screening scores as Hub registration time increased. The Children’s Impact of Event scale score decreased by 0.11 (95% CI: −0.17, −0.05) per month, but the score for depression increased by 0.06 (95% CI: 0.03, 0.10). Longitudinal patterns in anxiety and separation were difficult to discern. Screening scores of CYP registering later reduced at a faster rate than those of the first registrants. Higher levels of parental mental distress were correlated with increased anxiety scores assigned to the CYP in relation to the anxiety score reported by the CYP themselves.
Conclusion
CYP who registered earlier were less symptomatic, although those registering later did show increased improvement in their symptoms, indicating that the Hub was beneficial. Parental well-being was associated with child mental distress, indicating that shared family trauma should be considered when planning care.
This preliminary longitudinal web-based study examines the progression of anxiety, depression, and posttraumatic stress disorder (PTSD) symptoms among individuals affected by severe flooding in Rio Grande do Sul, Brazil. The aim is to provide data that can inform early interventions and future research on mental health following disasters.
Methods
Sixty-four participants were assessed during the flood (T1) and 1 month later (T2). Evaluations included sociodemographic data, trauma exposure, and symptoms of depression, anxiety, acute stress disorder (ASD), and PTSD.
Results
Depression and anxiety symptoms remained relatively stable between T1 and T2, while posttraumatic symptoms increased significantly, particularly re-experiencing and avoidance. This progression suggests a shift from initial hyperarousal to more entrenched symptoms of reliving trauma and avoidance, indicating that the long-term effects of trauma may be more closely tied to PTSD. Additionally, trauma exposure and specific ASD symptoms predicted PTSD severity at T2.
Conclusions
The results suggest a time-dependent progression of PTSD symptoms, with initial hyperarousal giving way to re-experiencing and avoidance, which are central to PTSD. Early psychoeducational interventions targeting re-experiencing symptoms and avoidance may help reduce PTSD severity. Further research in larger, more diverse samples is needed to assess generalizability.
The large-scale Russian invasion of Ukraine in early 2022 resulted in a humanitarian crisis with hundreds of thousands of children exposed to traumatic events. To date, trauma-focused evidence-based treatments (EBTs) for children and youth have not been systematically evaluated and implemented in Ukraine. This study aims at evaluating 1) the feasibility of a training program for Ukrainian therapists on Trauma-Focused Cognitive Behavioural Therapy (TF-CBT) and 2) the feasibility and effectiveness of the treatment for children, youth, and their families in and from Ukraine during the ongoing war.
Methods
The project “TF-CBT Ukraine” was implemented between March 2022 and May 2024, in close collaboration with local and international partners. Therapists completed questionnaires before/after the training, and patients were asked to complete a measure on PTSD before and after treatment.
Results
Altogether 138 therapists started the training program and 44.9% were certified as TF-CBT therapists. The program completers reported overall high satisfaction with the training program, a positive change in their attitude towards EBTs and trauma-related knowledge gain. The patients (age 3–21, 37% male) reported significant improvement in symptoms of PTSD at the end of treatment with large pre-post effect sizes for DSM-5 PTSD (dselfreport = 2.36; dcaregiverreport = 2.27), ICD-11 PTSD (dselfreport = 1.97; dcaregiverreport = 1.77), ICD-11 CPTSD (dselfreport = 2.04; dcaregiverreport = 1.99), and DSM-5 pre-school PTSD (dcaregiverreport = 3.14).
Conclusions
The results of this study are promising in regard to the general implementation of trauma-focused EBTs in active conflict areas. Future studies need to replicate these findings in a randomized controlled study design.
The study objective was to identify the specific challenges experienced by nurses, assess the mental health impacts, and evaluate their role adaptation in response to the ongoing conflict.
Methods
A quantitative, descriptive study was conducted involving 202 nurses from 3 hospitals in the South West Bank. Data were collected through a structured questionnaire addressing socio-demographic information, psychological challenges, and role adaptation during the conflict.
Results
The study surveyed 300 nurses, revealing critical findings regarding their psychological well-being and professional challenges. Approximately 65% of respondents reported experiencing symptoms consistent with PTSD, indicating a significant psychological toll due to their work conditions. In terms of workload, 78% of nurses reported an increased patient influx, leading to higher stress levels and burnout. The analysis indicated that nurses faced severe resource shortages, with 60% reporting inadequate medical supplies and 55% citing insufficient staffing.
Conclusions
The findings underscore the urgent need for enhanced training programs, mental health support, and improved disaster management protocols. Educational background and marital status significantly influence nurses’ resilience and adaptability in conflict zones. Addressing these challenges is essential to improving the well-being of nurses and enhancing the quality of care in conflict-affected areas.
For all intents and purposes, life was good for Karen: happily married and settled with three children and a nice life. A series of events -- including bereavement; a large, organised fraud involving threats, police involvement and a court case; and the sudden severe ill health of her husband -- sent her down a deep hole. Major depression and anxiety opened boxes that were closed many years ago containing trauma that was never disclosed and everything collapsed. PTSD added to the deep despair and there were numerous episodes of self-harm and suicide attempts. Six years of repeated admissions (mostly involuntary) followed, being treated with medications and four courses of ECT. ECT was instrumental in Karen being well enough to be able to engage with the therapy she needed for long-term recovery. The story is narrated with original diary extracts and poems written at the time of her suffering. Karen now works with the ECT Accreditation scheme, reviewing ECT clinics around the country, and has spoken extensively about her experiences to journalists and at conferences, trying to reduce the stigma that surrounds the treatment. She is also employed in the clinic where she received treatment as a peer support worker
This study explored junior mental health workers’ experiences of conducting assessments involving traumatic events. Semi-structured interviews with 11 junior mental health workers from a UK primary care mental health service were analysed using reflexive thematic analysis. Participants discussed themes of ambiguity in distinguishing trauma and PTSD, high levels of pressure, management of personal distress, appropriate training, and personal support in-service. Findings corroborate previous research regarding challenges experienced by junior mental health workers and offer novel insight into the challenges faced when assessing service-users’ experiences of traumatic events. Recommendations regarding future training, service design and emotional outlets for junior mental health workers are offered.
Key learning aims
(1) Following reading this paper, readers will better understand the diagnostic and practice-based complexities involved in assessing traumatic events as a Psychological Wellbeing Practitioner (PWP) in an NHS Talking Therapies service.
(2) Readers will also be aware of the emotional challenges PWPs in this service have reported experiencing as a result of assessing service users that report having experienced traumatic events.
(3) The reader will also learn about PWPs’ perspectives on what could improve this NHS Talking Therapies service’s processes involved in assessing traumatic events and reflect on whether this might be generalisable across other, similar services.
Posttraumatic stress disorder (PTSD) has been associated with advanced epigenetic age cross-sectionally, but the association between these variables over time is unclear. This study conducted meta-analyses to test whether new-onset PTSD diagnosis and changes in PTSD symptom severity over time were associated with changes in two metrics of epigenetic aging over two time points.
Methods
We conducted meta-analyses of the association between change in PTSD diagnosis and symptom severity and change in epigenetic age acceleration/deceleration (age-adjusted DNA methylation age residuals as per the Horvath and GrimAge metrics) using data from 7 military and civilian cohorts participating in the Psychiatric Genomics Consortium PTSD Epigenetics Workgroup (total N = 1,367).
Results
Meta-analysis revealed that the interaction between Time 1 (T1) Horvath age residuals and new-onset PTSD over time was significantly associated with Horvath age residuals at T2 (meta β = 0.16, meta p = 0.02, p-adj = 0.03). The interaction between T1 Horvath age residuals and changes in PTSD symptom severity over time was significantly related to Horvath age residuals at T2 (meta β = 0.24, meta p = 0.05). No associations were observed for GrimAge residuals.
Conclusions
Results indicated that individuals who developed new-onset PTSD or showed increased PTSD symptom severity over time evidenced greater epigenetic age acceleration at follow-up than would be expected based on baseline age acceleration. This suggests that PTSD may accelerate biological aging over time and highlights the need for intervention studies to determine if PTSD treatment has a beneficial effect on the aging methylome.
One in 25 patients experience PTSD following childbirth. Risk factors include unplanned cesarean delivery, operative vaginal delivery, obstetric emergencies such as cord prolapse, neonatal intensive care admission, previous trauma, and severe physical complications. Early recognition of PTSD is imperative. It can have a significant impact on the health of both the birthing parent and the infant. It is associated with difficulty in bonding with the infant, breast-feeding, or engaging in postnatal care. A multidisciplinary approach between obstetricians, psychiatrists, and other mental health providers is recommended for management. Treatment may involve eye movement desensitization and reprocessing, cognitive behavioral therapy, and pharmacotherapy. It is reasonable to perform cesarean delivery for maternal request in patients who are well informed of the risks, benefits, and alternatives.
Forcibly displaced persons (FDPs) exposed to torture and trauma require multidisciplinary therapies to address their complex needs in mental and physical health. In this systematic review and meta-analysis, we explored the efficacy of models of care that integrated psychological and physical interventions for PTSD outcomes. We searched the Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, PubMed, EMBASE, CINAHL, PsychINFO, and Web of Science databases. We performed the meta-analysis on studies with randomized controlled trials and non-randomized controlled trial designs, followed by a subgroup analysis of moderators. In all meta-analyses, a random-effects model was used with standardized mean differences to accommodate for the heterogeneity of studies and outcome measures. In a meta-analysis of a between-group analysis of 11 studies comprising 610 participants, integrated intervention showed a moderate effect size (Hedges’ g = −0.46 (95% CI −0.80 to −0.12) in reducing PTSD symptoms. The proportion of variation in observed effects reflects 82% of variation in true effects (I2 = 82%). The efficacy of transdisciplinary interventions was higher compared to multidisciplinary models. Moderator analysis found that the type of PTSD measure, format of intervention, and type of personnel providing the intervention were significant predictors of efficacy. Integrated interventions are efficacious in reducing PTSD outcomes for people with FDPs and those exposed to war trauma. Factors such as the type of integration of interventions and service delivery need to be further studied with high-quality designs and larger numbers in future studies.
In 1945, researchers on a mission to Hiroshima with the United States Strategic Bombing Survey canvassed survivors of the nuclear attack. This marked the beginning of global efforts—by psychiatrists, psychologists, and other social scientists—to tackle the complex ways human minds were affected by the advent of the nuclear age. Nuclear Minds traces these efforts and the ways they were interpreted differently across communities of researchers and victims. The manuscript explores how the bomb's psychological impact on survivors was understood before the invention/ discovery of the concept of Post-Traumatic Stress Disorder (PTSD). In fact, I argue, psychological and psychiatric research on Hiroshima and Nagasaki rarely referred to trauma or similar categories. Instead, institutional and political constraints—most notably the psychological sciences' entanglement with Cold War science—led researchers to concentrate on short-term damage and somatic reactions or even led, in some cases, the denial of victims' suffering. As a result, very few doctors tried to ameliorate suffering. This does not mean the professions “failed” to diagnose PTSD (a nonexistent category at the time), rather both doctors and, even more importantly, survivors, understood and experienced psychological suffering and their role in society differently.
Increasing attention has been recently devoted to treatment-resistant depression (TRD); however, its clinical characteristics, potential risk factors, and course are still debated. Most recently, childhood trauma exposure has been correlated to TRD, but systematic investigation on the role of lifetime trauma is still lacking. The aim of this paper was to revise current evidence on early and recent trauma exposure in TRD.
Methods
A systematic search was conducted from the 1st of June to the 20th of February 2024 in accordance with the PRISMA 2020 guidelines and using the electronic databases PubMed, Web of Science, and Embase.
Results
The primary database search produced a total of 1998 record, and finally, the search yielded a total of 22 publications, including 18 clinical studies, 3 case reports, and 1 case series, all from the period 2014 to 2024.
Limitations
Limitations include a small sample size of some studies and the lack of homogeneity in the definition of TRD. Furthermore, we only considered articles in English, we excluded preprints or abstracts, and we included case reports.
Conclusions
This review highlights the role of early and recent trauma in TRD, even in the absence of a full-blown post-traumatic stress disorder (PTSD), highlighting the need for a thorough assessment of trauma in patients with TRD and of its role as a therapeutic target.
Economic variables such as socioeconomic status and debt are linked with an increased risk of a range of mental health problems and appear to increase the risk of developing of post-traumatic stress disorder (PTSD). Previous research has shown that people living in more deprived areas have more severe symptoms of depression and anxiety after treatment in England’s NHS Talking Therapies services. However, no research has examined if there is a relationship between neighbourhood deprivation and outcomes for PTSD specifically. This study was an audit of existing data from a single NHS Talking Therapies service. The postcodes of 138 service users who had received psychological therapy for PTSD were used to link data from the English Indices of Deprivation. This was analysed with the PCL-5 measure of PTSD symptoms pre- and post-treatment. There was no significant association between neighbourhood deprivation measures on risk of drop-out from therapy for PTSD, number of sessions received or PTSD symptom severity at the start of treatment. However, post-treatment PCL-5 scores were significantly more severe for those living in highly deprived neighbourhoods, with lower estimated income and greater health and disability. There was also a non-significant trend for the same pattern based on employment and crime rates. There was no impact of access to housing and services or living environment. Those living in more deprived neighbourhoods experienced less of a reduction in PTSD symptoms after treatment from NHS Talking Therapies services. Given the small sample size in a single city, this finding needs to be replicated with a larger sample.
Key learning aims
(1) Previous literature has shown that socioeconomic deprivation increases the risk of a range of mental health problems.
(2) Existing research suggests that economic variables such as income and employment are associated with greater incidence of PTSD.
(3) In the current study, those living in more deprived areas experienced less of a reduction in PTSD symptoms following psychological therapy through NHS Talking Therapies.
(4) The relatively poorer treatment outcomes in the current study are not explained by differences in baseline PTSD severity or drop-out rates, which were not significantly different comparing patients from different socioeconomic strata.
Adverse childhood experiences (ACEs) have been associated with increased risks of autoimmune diseases. However, data are scarce on the role of specific ACEs as well as the potential mediating role of adverse mental health symptoms in this association.
Methods
A cohort study using the nationwide Icelandic Stress-And-Gene-Analysis (SAGA, 22,423 women) cohort and the UK Biobank (UKB, 86,492 women) was conducted. Participants self-reported on five ACEs. Twelve autoimmune diseases were self-reported in SAGA and identified via hospital records in UKB. Poisson regression was used to assess the cross-sectional association between ACEs and autoimmune diseases in both cohorts. Using longitudinal data on self-reported mental health symptoms in the UKB, we used causal mediation analyses to study potential mediation by depressive, anxiety, and PTSD symptoms in the association between ACEs and autoimmune diseases.
Results
The prevalence of ACEs was 50% in SAGA and 35% in UKB, while the prevalence of autoimmune diseases was 29% (self-reported) and 14% (clinically confirmed), respectively. In both cohorts, ACEs were associated with an increased prevalence ratio (PR) of any studied autoimmune disease in a dose–response manner (PR = 1.10 (95%CI = 1.08–1.12) per ACE), particularly for Sjögrens (PR = 1.34), polymyalgia rheumatica (PR = 1.20), rheumatoid arthritis (PR = 1.14), systemic lupus erythematosus (PR = 1.13), and thyroid disease (PR = 1.11). Sexual abuse and physical and emotional neglect were consistently associated with an elevated prevalence of autoimmune diseases when including all ACEs in the model. Approximately one fourth of the association was mediated through depression, anxiety, and PTSD.
Conclusions
These findings based on two large cohorts indicate a role of ACEs and corresponding mental health distress in autoimmune diseases among adult women.
Cognitive behavioural therapy (CBT) and eye-movement desensitisation and reprocessing (EMDR) are NICE-recommended evidence-based treatments for post-traumatic stress disorder (PTSD). However, there is less specification of which individuals might find CBT versus EMDR more effective, or whether other factors influence treatment outcomes. This study describes a service evaluation of trauma-focused CBT (CT-PTSD) and EMDR treatment outcomes for PTSD in a London out-patient NHS Talking Therapies (NHS TT) service over 11 years (N=1580). The evaluation was conducted in an adult sample (mean age 37 years), of which 65% were women. The mean number of treatment episodes for PTSD in the service in the sample was 2.39 (SD=1.86), and the mean number of therapy sessions attended was 6.15 (SD=6.43). When using NHS TT recovery criteria, there was no significant difference between PTSD recovery rates in the service for those who received CT-PTSD (40.8%) versus EMDR (43.6%). CT-PTSD was associated with greater reductions in anxious and depressive (but not PTSD-specific) symptoms than EMDR, but this was confounded by the fact that individuals receiving CT-PTSD in the service had higher anxiety and depression scores at start-of-treatment. Older age and non-female gender were associated with higher anxiety and depression scores. PTSD recovery rates were comparable to other NHS TT services. There is no clear indication that either CBT or EMDR is a more effective treatment for PTSD symptoms in the service, although preliminary findings could inform treatment planning regarding differential effects of the treatments on anxious and depressive symptoms. Other clinical implications are discussed.
Key learning aims
(1) To gain a better understanding of the relative effectiveness of trauma-focused CBT and EMDR for PTSD, as provided in a working NHS TT service.
(2) To allow better-informed clinical and treatment pathway planning for individuals with trauma problems in a talking therapies service.
(3) To contribute to the wider research literature on effective interventions for trauma within cognitive therapy and NHS frameworks.
Post-traumatic stress disorder (PTSD) is characterized by severe distress and associated with cardiometabolic diseases. Studies in military and clinical populations suggest that dysregulated metabolomic processes may be a key mechanism. Prior work identified and validated a metabolite-based distress score (MDS) linked with depression and anxiety and subsequent cardiometabolic diseases. Here, we assessed whether PTSD shares metabolic alterations with depression and anxiety and if additional metabolites are related to PTSD.
Methods
We leveraged plasma metabolomics data from three subsamples nested within the Nurses’ Health Study II, including 2835 women with 2950 blood samples collected across three time points (1996–2014) and 339 known metabolites assayed by mass spectrometry-based techniques. Trauma and PTSD exposures were assessed in 2008 and characterized as follows: lifetime trauma without PTSD, lifetime PTSD in remission, and persistent PTSD symptoms. Associations between the exposures and the MDS or individual metabolites were estimated within each subsample adjusting for potential confounders and combined in random-effects meta-analyses.
Results
Persistent PTSD symptoms were associated with higher levels of the previously developed MDS. Out of 339 metabolites, we identified 29 metabolites (primarily elevated glycerophospholipids and glycerolipids) associated with persistent symptoms (false discovery rate < 0.05; adjusting for technical covariates). No metabolite associations were found with the other PTSD-related exposures.
Conclusions
As the first large-scale, population-based metabolomics analysis of PTSD, our study highlighted shared and distinct metabolic differences linked to PTSD versus depression or anxiety. We identified novel metabolite markers associated with PTSD symptom persistence, suggesting further connections with metabolic dysregulation that may have downstream consequences for health.