Anorexia nervosa is among the most severe psychiatric disorders of adolescence, carrying the highest mortality of any mental illness and substantial medical morbidity. Over the past two decades, researchers have accumulated strong evidence that childhood traumatic experiences, particularly sexual abuse, emotional maltreatment, and neglect, are more common among people with eating disorders and are linked to greater symptom severity, psychiatric comorbidity, suicidality, and poorer treatment outcomes. What has remained far less clear is the optimal timing and method for addressing trauma in severely underweight adolescents, whose bodies and minds may have little reserve to absorb the emotional shockwaves of traumatic recall.

The girl’s history illustrates how insidious the illness can be. Described from early childhood as emotionally sensitive, perfectionistic, and highly responsive to the expectations of others, she had marked difficulty expressing distress. Restrictive eating began at age 12, when her body mass index stood at 22.6 kg/m², starting as apparently health-oriented dietary changes that slid into severe caloric restriction, calorie counting, excessive exercise, and intense fear of weight gain. By 13 years and 8 months she required her first hospitalization after losing roughly 15 kilograms, developing sinus bradycardia with a heart rate of 46 beats per minute and malnutrition. Extensive investigations excluded organic causes, and she was diagnosed with restrictive anorexia nervosa under DSM-5-TR criteria, receiving multidisciplinary inpatient treatment with nutritional rehabilitation, psychiatric management, and aripiprazole before partial weight restoration.

From 2021 to 2024 she was treated in a specialist public multidisciplinary eating-disorder service, combining medical and nutritional monitoring, psychiatric follow-up, and individual psychotherapy aimed at reconstructing her developmental history and identifying the mechanisms maintaining the eating disorder. Behavioral and nutritional stabilization was only partial. She continued to show exaggerated emotional reactions, self-depreciation, difficulty managing negative emotions, and persistent fear of weight gain and body control. Then, in early 2024, a childhood sexual abuse perpetrated by an adult family acquaintance when she was about 8 years old, which had been disclosed to her parents shortly after it occurred but never psychologically processed, was revisited in greater depth during psychotherapy. In her later retrospective account, the sessions became progressively

The deterioration that followed was both rapid and medically serious. Over roughly six months, the adolescent lost approximately 12 kilograms, bringing her body mass index down to 16.26 kg/m². Her mood darkened, she withdrew socially, and her restrictive eating behaviors intensified markedly. Escitalopram was prescribed to address the associated depressive and anxiety symptoms, but the persistent refusal of oral intake, particularly of carbohydrate-rich foods, made outpatient stabilization impossible. During medical monitoring she was found to be hypoglycemic, with a blood glucose of 60 mg/dL, and the combination of inadequate intake and dehydration ultimately required hospitalization for intravenous fluids and electrolyte replacement to restore hydration and correct her metabolic abnormalities.

The laboratory findings recorded during this second admission painted a picture of advanced malnutrition. She presented with electrolyte disturbances, including a potassium level of 3.2 mEq/L, a phosphorus level of 2.9 mEq/L, and a sodium level of 132 mEq/L, along with mild thrombocytopenia, with platelets counted at 122,000 per microliter. These abnormalities matter clinically because electrolyte shifts, particularly of potassium and phosphorus, are among the most dangerous complications of both starvation and the refeeding process that follows it. Hypophosphatemia in particular can affect cardiac, neurological, and muscular function, and it is a hallmark risk during nutritional rehabilitation in severely underweight patients. Repeat investigations during the hospitalization again excluded alternative organic causes of weight loss, confirming that the deterioration reflected the psychiatric illness itself rather than a hidden medical condition.

Because oral intake remained inadequate, temporary nasogastric feeding was introduced to guarantee sufficient nutrition and support progressive rehabilitation. The team proceeded with careful monitoring during refeeding, acutely aware of the metabolic complications that can arise when a starved body is suddenly refed. Secondary amenorrhea also emerged as an additional manifestation of the prolonged state of energy deficiency, a well-recognized consequence of hypothalamic suppression in chronic undernutrition that signals the body’s shift into an energy-conserving mode. Together, these features underscore that the relapse was not merely a psychological setback but a systemic medical event affecting nearly every organ system.

What makes this temporal sequence clinically interesting, the authors argue, is not the well-established association between childhood trauma and eating disorders, which has been documented extensively in the literature, but rather the specific timing of the relapse in relation to the therapeutic exploration of the abuse. The traumatic experience had been disclosed years earlier but never psychologically processed. When it was revisited in greater detail during psychotherapy that was not formally trauma-focused, the discussion became, in the patient’s own retrospective account, progressively overwhelming. The restrictive symptoms that followed can be understood, through the lens of developmental trauma models, as an attempt to regulate emotional states that had become unbearable. Food restriction, rigid rituals, and excessive control over the body may function as mechanisms of emotional numbing and experiential avoidance rather than as expressions of body-image concern alone, and in this patient those mechanisms appear to have been reactivated when the trauma narrative was opened without sufficient containment.

Developmental trauma models suggest that early interpersonal trauma can disrupt emotional regulation, identity development, bodily integration, and interpersonal security, producing clinical presentations that extend well beyond classical post-traumatic stress disorder. In adolescents, whose sense of self and body is still consolidating, these disruptions may interact with restrictive symptoms in particularly complex ways. The case suggests that for some patients, restriction serves as a primary defensive and affect-regulatory structure, and that dismantling or destabilizing the underlying emotional equilibrium without first strengthening the patient’s regulatory capacities can precipitate a dangerous escalation of the eating disorder itself.

The authors are careful to note that this observation does not imply that trauma should never be discussed with adolescents who have anorexia nervosa. Trauma-focused interventions have shown promising feasibility even in underweight patients, provided they are delivered within carefully structured, well-supervised therapeutic frameworks with continuous monitoring of emotional and nutritional stability. The clinical question, therefore, is not whether to address trauma but when and how. In severely vulnerable patients, the report suggests, a phase-based approach may be essential: first stabilizing nutrition, weight, and medical parameters; then building emotional regulation skills and therapeutic alliance; and only subsequently engaging with traumatic material in a graded, contained manner. This phased logic, drawn from broader trauma-informed treatment models, recognizes that premature or unstructured exploration of trauma can overwhelm a patient whose coping resources are already stretched to their limits.

The case also highlights the importance of multidisciplinary communication. The psychotherapy in question took place within a specialist eating-disorder service that included medical and nutritional monitoring, yet the severe relapse still occurred. This suggests that even in well-resourced settings, the emergence of previously unprocessed traumatic material during routine therapeutic work may be difficult to anticipate and contain. Structured communication between psychotherapist, psychiatrist, pediatrician, and nutrition team, with explicit protocols for escalating monitoring when distress rises, may help close this gap. The report was prepared according to the CARE guidelines for case reports, reflecting an effort to document the temporal sequence of clinical events transparently so that other clinicians can learn from the observation.

Several limitations inherent to a single case report deserve emphasis. A temporal association between the revisiting of trauma and clinical deterioration does not establish causation. Other factors may have contributed to the relapse, including the natural course of the illness, adolescent developmental pressures, family circumstances such as the parents’ separation years earlier, and a paternal history of anxiety disorder that may reflect genetic or environmental vulnerability. The patient’s retrospective account of the therapy sessions was collected after the deterioration, which may have shaped how she recalled the experience. Case reports generate hypotheses rather than test them, and the authors present this observation as a prompt for further research into therapeutic pacing rather than as definitive evidence about the dangers of trauma exploration.

Nevertheless, the clinical implications are significant for pediatricians, child and adolescent psychiatrists, and psychotherapists working with eating disorders. The report underscores the need to assess emotional regulation capacities and medical stability before traumatic experiences are revisited in severely underweight adolescents, and to ensure that such exploration occurs within a phase-based, trauma-informed, multidisciplinary framework. It also serves as a reminder that in some patients with restrictive anorexia nervosa, the eating disorder itself may be functioning as the primary defense against overwhelming emotional states, and that therapeutic work which destabilizes that defense without adequate preparation and support can have serious medical consequences. For clinicians navigating the delicate balance between addressing the traumatic roots of an eating disorder and protecting a medically fragile patient, this case offers a sobering and instructive data point in an area where controlled evidence remains limited and clinical judgment carries enormous weight.

Subject of Research: The interaction between childhood sexual abuse trauma exploration and clinical deterioration in adolescent anorexia nervosa

Article Title: Clinical deterioration after revisiting childhood sexual abuse during psychotherapy for restrictive anorexia nervosa: a case report

Article References: Clinical deterioration after revisiting childhood sexual abuse during psychotherapy for restrictive anorexia nervosa: a case report. (n.d.). https://doi.org/10.3389/fped.2026.1958194

Image Credits: AI Generated

DOI: 10.3389/fped.2026.1958194

Keywords: anorexia nervosa, childhood sexual abuse, adolescent psychiatry, trauma-informed care, emotional dysregulation, case report, eating disorders, PTSD, psychotherapy, nutritional rehabilitation, developmental trauma, multidisciplinary treatment

The amygdala has long occupied a central place in affective neuroscience. It sits deep in the medial temporal lobe and coordinates responses to threat, reward, and emotional salience, communicating closely with the prefrontal cortex to regulate how emotions are expressed and controlled. Epidemiological evidence has repeatedly linked circadian rhythm disruption to emotional dysregulation, including heightened susceptibility to depression and anxiety. What remained unclear was whether these disruptions directly alter amygdala morphology and function in otherwise healthy people, and whether such changes track the sleep and affective disturbances that accompany them. Answering that question required a controlled intervention rather than a correlational snapshot.

The study enrolled healthy participants who underwent fifteen days of experimentally induced circadian rhythm disruption. The intervention successfully produced sleep and emotional disturbances, which the researchers documented with standardized questionnaires. Ultra-high field 7 Tesla MRI scans were acquired before and after the intervention to assess gray matter volume and functional connectivity in the amygdala and its subnuclei. The choice of 7 Tesla imaging is technically significant: at this field strength, spatial resolution and contrast are sufficient to resolve the amygdala’s internal architecture, allowing the team to segment the structure into its centromedial, laterobasal, and superficial nuclei rather than treating it as a single undifferentiated blob.

The results revealed a significant reduction in gray matter volume within the left amygdala and its subregions following the disruption period. Reductions appeared across all three segmented nuclei: the centromedial nucleus, which is involved in autonomic and endocrine outputs of emotion; the laterobasal nucleus, which handles communication with cortical and subcortical targets; and the superficial nucleus, which contributes to emotional salience processing. In contrast, no significant gray matter changes were detected in the right amygdala or its corresponding subregions. The authors interpret this asymmetry as evidence of a lateralized effect of ACRD, suggesting the left amygdala is selectively vulnerable to circadian perturbation.

The lateralization finding is notable because prior work on the amygdala in mood disorders has often reported left-sided structural and functional abnormalities. The left amygdala is frequently implicated in the processing of negative emotional stimuli and in the pathophysiology of depression. A circadian disruption protocol that selectively thins gray matter on the left side therefore provides a plausible mechanistic bridge between disturbed biological rhythms and the left-amygdala abnormalities repeatedly observed in mood disorder research. Whether the structural change is driven by cellular stress, altered neurotrophic signaling, or fluid shifts associated with disturbed sleep cannot be determined from MRI alone, but the anatomical specificity argues against a nonspecific imaging artifact.

Crucially, the gray matter reductions in the left amygdala were significantly correlated with worsening scores on the Pittsburgh Sleep Quality Index, or PSQI. This correlation ties the structural change directly to the subjective experience of deteriorating sleep quality during the intervention. Participants whose sleep quality declined the most also showed the greatest amygdala volume loss, indicating that the morphological change is not merely a group-level average but varies meaningfully with individual sleep disturbance. The finding also raises the possibility that amygdala gray matter serves as a sensitive structural marker of circadian-related sleep pathology, one that could in principle be monitored noninvasively.

Functional connectivity analysis added a second layer of evidence. The team observed a nearly significant decrease in connectivity between the left medial prefrontal cortex and the left centromedial amygdala. The medial prefrontal cortex is a key regulatory partner of the amygdala, and the centromedial nucleus is the amygdala’s principal output station for autonomic and endocrine responses. Weakened coupling between these two regions would be expected to impair top-down control over emotional responses, a mechanism long proposed to underlie emotional dysregulation in depression and anxiety. The authors note the connectivity change was nearly significant rather than fully significant, a nuance that reflects the modest sample size typical of ultra-high field intervention studies, but the direction of the effect aligns with the structural findings and with theoretical models of prefrontal-amygdala dysregulation.

One of the most reassuring aspects of the study concerns reversibility. Questionnaire-based symptoms of the rhythm disorder were restored by the thirty-day follow-up, indicating that the subjective sleep and emotional disturbances produced by the intervention resolved once normal rhythms were re-established. The study did not report whether amygdala gray matter volume recovered in parallel, leaving an open question for future work. If the structural change proves reversible, the clinical implications are encouraging: circadian disruption would represent a modifiable risk factor for amygdala integrity rather than a permanent injury. If recovery lags behind symptom resolution, however, the brain may retain structural traces of rhythm disruption even after people report feeling better, which would argue for longer recovery periods and closer monitoring in shift workers and others with chronic rhythm disturbance.

The translational significance of the work extends beyond the laboratory. Acute circadian rhythm disruption is increasingly prevalent due to chronic sleep disturbance, irregular sleep-wake patterns, shift work, jet lag, and late-night screen exposure. A controlled demonstration that fifteen days of rhythm perturbation thins gray matter in the emotional brain, and that the degree of thinning tracks worsening sleep quality, gives clinicians and researchers a concrete neurobiological target. It also connects to a broader literature: related studies have examined amygdala subnuclei connectivity in bipolar disorder, brain structural correlates preceding initial major depressive episodes, and prospective cohort evidence linking circadian rhythm disruption to brain disorder incidence in over 72,000 participants. The new intervention study complements these correlational approaches by establishing temporal precedence and dose-response within individuals.

For the public, the message is direct. The amygdala is not an inert structure that simply responds to whatever life presents; its gray matter volume and its functional dialogue with the prefrontal cortex are dynamically sensitive to the timing of sleep and wakefulness. Fifteen days of circadian perturbation was enough to produce lateralized structural change in healthy brains, and the change correlated with how poorly participants slept. As the authors and their colleagues at the Zhejiang University 7 Tesla Brain Imaging Research Center continue to follow this line of inquiry, the central questions will concern recovery of amygdala volume, the cellular mechanisms driving the gray matter loss, and whether individuals with pre-existing vulnerability show amplified responses. What is already clear is that protecting circadian regularity is not merely about feeling rested; it is about preserving the structural and functional integrity of the brain’s emotional circuitry.

Subject of Research: Neurobiological effects of acute circadian rhythm disruption on amygdala gray matter and functional connectivity

Article Title: Impact of circadian rhythm disruptions on the emotional brain: gray matter and functional connectivity changes in the amygdala

Article References: Wang, C., Liu, D.-Y., Wang, Z.-Y., & Song, X. M. (2026). Impact of circadian rhythm disruptions on the emotional brain: gray matter and functional connectivity changes in the amygdala. Translational Psychiatry. https://doi.org/10.1038/s41398-026-04481-w

Image Credits: AI Generated

DOI: 10.1038/s41398-026-04481-w

Keywords: circadian rhythm disruption, amygdala, gray matter volume, 7 Tesla MRI, functional connectivity, sleep quality, medial prefrontal cortex, emotional regulation, Translational Psychiatry, lateralized brain changes, Impact, circadian

The scientific rationale rests on one of the most robust findings in psychiatric epidemiology: exposure to early life adversity is a powerful predictor of later psychiatric illness. But the RESPOND team goes further, focusing on a mechanism that has received comparatively little clinical attention. In individuals assigned female at birth, early adversity appears to alter neuroendocrine, epigenetic, and inflammatory processes in ways that heighten sensitivity to reproductive hormonal transitions throughout life, including the menstrual cycle, the postpartum period, and menopause. The result is a clinical profile the investigators call hormonal sensitivity, in which psychiatric symptoms flare and recede in cyclical patterns tied to shifting physiology. Crucially, these patients often present with symptom pictures that fall outside traditional diagnostic boundaries, meaning they may not qualify cleanly for existing trauma-focused or mood-focused treatments, and no psychotherapy protocol has previously been designed to address the three-way interaction between early adversity, hormonal sensitivity, and depression.

The intervention at the heart of the trial is deliberately hybrid in design. Rather than inventing a therapy from scratch, the researchers integrate components from three well-established modalities: cognitive behavioural therapy, which targets maladaptive thought patterns and behaviour; dialectical behaviour therapy, which builds skills for tolerating distress and regulating intense emotion; and cognitive processing therapy, which addresses the distorted beliefs about self and world that trauma implants. Delivered entirely virtually over twelve weeks, the phase-based structure allows the treatment to unfold in stages, an architecture the investigators chose to match the layered needs of people whose depression is entangled with developmental trauma and fluctuating hormonal states. The virtual delivery model also broadens access, a practical consideration for a population that often faces barriers to specialized in-person care.

Forty participants will complete the intervention, and the trial will track them at four time points: baseline, mid-treatment, post-treatment, and a three-month follow-up. The primary outcome is change in depressive symptoms measured with the Quick Inventory of Depressive Symptoms, a validated instrument widely used in clinical trials because of its sensitivity to change. Secondary outcomes extend the lens beyond mood, capturing emotional regulation with the Difficulties in Emotional Regulation Scale, trauma symptoms with the PTSD Checklist for the DSM-5, and day-to-day functioning with the Illness Intrusiveness Scale. Resilience will also be gauged using the Connor Davidson Resiliency Scale, and trauma history will be assessed with instruments including the Childhood Experiences of Care and Abuse measure and the International Trauma Questionnaire, which allows for diagnoses of complex posttraumatic stress disorder and disturbances in self-organization that standard checklists often miss.

What distinguishes RESPOND from most psychotherapy trials is its insistence on measuring the biology that accompanies symptom change. Hormonal sensitivity itself will be quantified through daily symptom charting, including the McMaster Premenstrual and Mood Symptom Scale developed by the senior author’s group and the Greene Climacteric Scale for menopausal symptoms, allowing the team to map symptom cycles against each participant’s reproductive stage. Blood-based biomarkers will be collected before and after treatment, targeting three biological systems implicated in the aftermath of early adversity. Inflammatory markers, including C-reactive protein, interleukin-6, interleukin-10, and tumor necrosis factor-alpha, will index the chronic low-grade inflammation that childhood trauma leaves in its wake. DNA methylation patterns will probe the epigenetic scars that adversity imprints on gene expression. And neurosteroids, including allopregnanolone, the progesterone metabolite that powerfully modulates GABA receptors in the brain, will illuminate the endocrine machinery most directly tied to hormonal sensitivity.

The neurosteroid angle is scientifically compelling because allopregnanolone sits at the crossroads of the trial’s central hypothesis. This metabolite fluctuates naturally across the menstrual cycle, pregnancy, and menopause, and it acts on gamma-aminobutyric acid receptors, the same targets engaged by sedative drugs and, more recently, by approved treatments for postpartum depression. Enzymes such as 3-alpha-hydroxysteroid dehydrogenase, 3-beta-hydroxysteroid dehydrogenase, 5-alpha-reductase type 1, and 5-beta-reductase govern its synthesis and metabolism, and early life adversity is thought to dysregulate these pathways. By measuring neurosteroids alongside inflammatory and epigenetic markers before and after psychotherapy, the investigators can ask a genuinely novel question: whether a targeted psychological intervention can shift not only how patients feel but also the measurable physiological signals that early adversity has written into their bodies.

The study’s analytical framework reflects its proof-of-concept ambitions. Because the trial lacks a control arm, it cannot definitively attribute improvement to the therapy itself; instead, it is designed to establish feasibility, acceptability, and preliminary signal. Linear mixed-effects models will handle the repeated measurements over time, and intraclass correlations will quantify reliability of the assessments. This is the standard architecture of an early-phase behavioural trial, and the team is explicit that the goal is to characterize biological mechanisms shared between early adversity and mood disturbance while assessing whether targeted psychotherapy can move both clinical symptoms and biological markers in parallel. If the signal is strong, the foundation exists for larger randomized controlled trials, and the biomarker data could eventually help identify which patients are most likely to benefit, a step toward precision mental health.

For the population the trial serves, the stakes are considerable. Individuals assigned female at birth with complex depression related to early life adversity frequently cycle through treatments designed for prototypical major depressive disorder or single-event PTSD, and find partial relief at best. Their symptoms may intensify predictably before menstruation, after childbirth, or during the menopausal transition, patterns that mainstream diagnostic frameworks have historically treated as separate conditions or dismissed entirely. The RESPOND investigators frame their work as an attempt to correct that exclusion, building a treatment and a research program around the actual clinical needs of these patients rather than forcing them into categories that were never designed for them. The involvement of the Women’s Health Concerns Clinic and the Anxiety Treatment and Research Clinic at St. Joseph’s Healthcare Hamilton underscores the translational intent of the project.

The trial’s practical details signal careful attention to modern research standards. All data will be managed through REDCap, the widely used research electronic data capture platform, with compliance frameworks including HIPAA and FISMA referenced in the protocol’s security posture. Funding comes from an unrestricted educational donation from SunLife Canada, with the protocol itself not peer reviewed by the funder, and the authors declare no competing interests. Diagnostic characterization will rely on the Diagnostic Assessment and Research Tool alongside the Montgomery Åsberg Depression Rating Scale as a clinician-rated complement to self-report measures. With the record first released in August 2025 and updated through July 2026, and the protocol published open access on 17 September 2026, the RESPOND trial now moves from design to evidence generation, and its results could reshape how clinicians conceptualize and treat the depression that so often follows childhood adversity in hormonally sensitive patients.

Subject of Research: A phase-based psychotherapy protocol with integrated neurobiological investigation for depression following early life adversity in hormonally sensitive individuals

Article Title: The RESPOND trial: protocol for a novel phase-based psychotherapy and integrated neurobiological investigation of depression following early life adversity

Article References: Dikaios, K., Green, S. M., Ramos-Lima, L. F., Boyd, J., & Frey, B. N. (2026). The RESPOND trial: protocol for a novel phase-based psychotherapy and integrated neurobiological investigation of depression following early life adversity. BMC Psychiatry. https://doi.org/10.1186/s12888-026-08586-w

Image Credits: AI Generated

DOI: 10.1186/s12888-026-08586-w

Keywords: early life adversity, depression, hormonal sensitivity, psychotherapy, RESPOND trial, neurosteroids, allopregnanolone, inflammation, DNA methylation, women's mental health, trauma, emotional dysregulation

The relationship between eating disorders and substance use disorders has long puzzled clinicians. Epidemiological studies consistently show that these conditions co-occur at rates far higher than chance would predict, yet eating disorder symptoms are rarely measured in substance use research. This gap matters because the two disorders may share underlying mechanisms, particularly difficulties in emotional regulation and impulsive behavior when distressed. If researchers studying youth substance use ignore eating pathology, they may be missing a crucial piece of the puzzle that explains why some young people develop severe substance-related problems while others do not. The new study set out to determine whether a brief screener could close that gap without adding meaningful burden to research participants or clinical staff.

The research team analyzed data from 682 young people between the ages of 15 and 25, assessed across 722 visits through a standardized intake process. Each participant completed the Eating Disorder Screen for Primary Care, known as the ESP, along with a comprehensive battery of psychological measures. These included the Difficulties in Emotion Regulation Scale Short Form for emotional dysregulation, the UPPS-P Revised Child Impulsivity Scale for impulsive personality traits including negative urgency, the Patient Health Questionnaire for depression, the General Anxiety Disorder seven-item questionnaire for anxiety, and validated instruments for problems related to cannabis and electronic cigarette or nicotine use. Participants also reported their substance use over the previous thirty days using timeline follow-back methods, a well-established calendar-based approach for reconstructing recent consumption patterns.

The ESP itself is remarkably simple. It asks respondents to rate, on a scale from zero to two, how often they experience concerns such as feeling terrified of being overweight, avoiding eating when hungry, going on eating binges, vomiting after eating, or exercising excessively to control weight. In primary care, a score of two or higher is traditionally used as the clinical cut-off indicating possible eating disorder. But the researchers wanted to know whether that threshold, developed for general medical patients, would perform well in a population of young people recruited specifically for substance use research, where the presentation of eating pathology may differ from typical clinical samples.

To answer that question, the team applied receiver operating characteristic analysis, a statistical technique that evaluates how well a screening tool discriminates between people who have a condition and those who do not across all possible cut-off scores. Clinical diagnoses were established using the Mini International Neuropsychiatric Interview, a structured diagnostic instrument. The analysis examined sensitivity, the proportion of true cases correctly identified; specificity, the proportion of non-cases correctly cleared; and positive and negative predictive values across a range of possible thresholds from two to five. The results showed that the traditional clinical cut-off of two or higher yielded high sensitivity but poor specificity, meaning it caught most true cases but also flagged many young people who did not meet diagnostic criteria.

The receiver operating characteristic curves pointed to a better balance at a score of three or higher. At this revised threshold, the ESP achieved acceptable diagnostic accuracy for detecting eating disorder diagnoses within this particular population, trading a small loss in sensitivity for a meaningful gain in specificity. The finding carries practical significance: screening tools embedded in substance use research protocols and clinical intakes can be tuned to the population being assessed rather than relying on thresholds imported from different settings. For researchers, the tailored cut-off means that a two-minute questionnaire can now yield interpretable eating disorder risk data in studies that were never designed with eating pathology in mind.

Having established the optimal threshold, the researchers then compared young people who screened at risk with those who did not, using Wilcoxon rank sum tests to account for the non-normal distribution of the psychological and substance use measures. The differences were substantial and consistent. Youth who endorsed eating disorder risk reported significantly higher emotional dysregulation, meaning greater difficulty identifying, tolerating, and modulating their emotional states. They also scored higher on negative urgency, a specific facet of impulsivity that describes the tendency to act rashly when experiencing intense negative emotions. This trait has been implicated in both binge eating and substance use, and the new findings suggest it may be a common pathway connecting the two classes of disorders.

The psychiatric burden among those at risk extended to mood and anxiety. Participants flagged by the revised ESP cut-off reported significantly more depressive symptoms on the PHQ and more anxiety symptoms on the GAD-7 than their non-risk peers. Their substance use profiles were equally distinctive. Although they reported lower quantity and frequency of alcohol consumption, they used cannabis more frequently and reported greater problems related to both cannabis, measured with the Marijuana Adolescent Problem Inventory, and nicotine, measured with the Penn State Electronic Cigarette Dependence Index. This pattern suggests that eating disorder risk in youth does not simply generalize to all substance use; instead, it clusters with specific substances, particularly cannabis and nicotine, while alcohol use may actually be reduced.

The authors argue that these findings point to emotional dysregulation as a central risk factor for the co-occurrence of eating disorder symptoms and substance use in young people. When the capacity to manage distressing emotions is compromised, multiple maladaptive behaviors, from restrictive eating and bingeing to cannabis and nicotine use, may emerge as alternative strategies for emotional relief. This transdiagnostic perspective has implications for treatment: interventions that build emotion regulation skills, such as dialectical behavior therapy approaches, could potentially address both conditions simultaneously rather than treating them in isolation. It also suggests that substance use treatment programs should consider screening for eating pathology, since young people with co-occurring eating disorder risk may require tailored support to achieve better outcomes.

For clinicians and researchers alike, the study offers a pragmatic message. Brief, low-effort screening tools like the ESP can be incorporated into substance use research and clinical intake processes with minimal burden, yet they capture clinically meaningful information that would otherwise be lost. The tailored cut-off of three or higher demonstrated acceptable diagnostic accuracy in this youth sample, and the psychological profile it identifies, marked by emotional dysregulation, negative urgency, depression, anxiety, and heavier cannabis and nicotine involvement, provides researchers with concrete targets for understanding why eating disorders and substance use disorders so often travel together. As youth mental health services grapple with rising rates of both conditions, a one-minute questionnaire may prove to be an unexpectedly powerful window into the shared roots of these intertwined disorders.

Subject of Research: Eating disorder risk screening and its mental health and substance use correlates in adolescents and young adults

Article Title: Distinct mental health and substance use patterns in youth who endorse eating disorder risk using the eating disorder screen for primary care

Article References: Giddens, E., Kirkland, A. E., Mahlberg, J., Ferguson, P. L., Steward, T., Verdejo-Garcia, A., Tomko, R. L., & Squeglia, L. M. (2026). Distinct mental health and substance use patterns in youth who endorse eating disorder risk using the eating disorder screen for primary care. Journal of Eating Disorders. https://doi.org/10.1186/s40337-026-01792-7

Image Credits: AI Generated

DOI: 10.1186/s40337-026-01792-7

Keywords: eating disorders, substance use, screening tools, youth, emotional dysregulation, impulsivity, cannabis, nicotine, depression, anxiety, primary care, diagnostic accuracy

The review, led by Anna Preece and colleagues at Bournemouth University with collaborators at the University of Southampton, the University of Exeter and a primary care practice in Poole, systematically searched five major research databases: EBSCO, PubMed, Scopus, Cochrane and Web of Science. Two reviewers independently screened the results, resolving disagreements through discussion, and the team included all published, peer-reviewed studies that examined clinical populations with alcohol use disorder, regardless of study design or country of origin. That broad net captured forty-four studies, spanning observational research and intervention trials, from which four key themes emerged: the prevalence of eating disorder symptomology, the psychological mechanisms underpinning both conditions, treatment engagement and outcomes, and differences across cultural, ethnic and gender lines.

The headline finding is one of sheer frequency. Disordered eating symptomology proved highly prevalent among people in alcohol treatment services, with bulimia nervosa the most frequently reported diagnosis. This is a striking pattern because much of the existing literature on eating and drinking comorbidity has focused on college students or on populations recruited from eating disorder clinics, groups whose experiences differ substantially from those of people actively receiving treatment for alcohol dependence. By concentrating specifically on clinical AUD populations, the review fills a gap that has left clinicians without a clear picture of who in their caseloads may also be struggling with binge eating, restrictive eating or compensatory behaviours.

Why should these two conditions be so intertwined? The review points to a set of shared psychological mechanisms that function as common engines for both behaviours. High levels of negative urgency, the tendency to act impulsively when experiencing intense negative emotions, were identified across studies, alongside emotional dysregulation and low self-esteem. In practical terms, this means that for many individuals, alcohol and food serve parallel functions: both can become tools for numbing, soothing or escaping difficult feelings. A person who drinks to blunt distress may also binge eat for the same reason, or swing between restriction and binging as another way of exerting control or coping with shame. The behaviours look different on the surface, but they may be two expressions of the same underlying vulnerability.

The consequences of this comorbidity are not merely additive; they compound. The review found that individuals with comorbid eating disorders were more likely to leave treatment services early or against medical advice, and that the presence of disordered eating was associated with increases in illness severity, mortality risk and recovery time. Demographic patterns also emerged: people with comorbid eating disorders were more likely to be Caucasian and less likely to be employed, findings that may reflect both differential risk and differential access to care. For treatment services, the message is sobering. A patient who abandons an alcohol programme prematurely may not simply be resisting abstinence; they may be struggling with an unrecognised eating problem that no one has asked about.

That last point leads to one of the review’s most provocative clinical implications: the possibility that abstinence-focused treatment models may inadvertently reinforce restrictive eating. Alcohol treatment is, by design, built around stopping a behaviour entirely. But if food is serving a similar emotional function for a patient, a treatment culture that frames all coping-through-substance as failure could push individuals toward restricting food instead, simply swapping one form of dysregulated consumption for another. The authors argue that this underscores the need for research into holistic, integrated approaches that address the shared mechanisms rather than treating each behaviour as an isolated target. A transdiagnostic model of diagnosis and intervention, one that cuts across diagnostic categories to target emotional dysregulation, impulsivity and self-esteem directly, may offer a more coherent framework than parallel but separate treatment pathways.

The review also raises a significant equity concern regarding gender. Although the evidence showed that disordered eating symptomology and its functional role were broadly similar in men and women, most research to date has focused on women, and gender-specific screening tools remain underdeveloped. Given that men make up the majority of people in alcohol treatment services in many countries, this gap means that men’s disordered eating may be going systematically unrecognised. A man in an alcohol programme who binges or restricts may never be asked about his relationship with food, because both the screening instruments and the research base were built primarily around female presentations of eating disorders. The authors call for research that recruits men and women equitably, so that the evidence base reflects the actual population of people seeking help.

Methodologically, the review is candid about the limitations of what it synthesised. The forty-four included studies varied widely in design, measurement instruments and populations, as reflected in the long list of questionnaires catalogued in the paper, from the Eating Disorder Examination Questionnaire and the Binge Eating Scale to the Difficulties in Emotion Regulation Scale and the Barratt Impulsiveness Scale. This heterogeneity makes it difficult to pool findings or draw precise prevalence estimates, and the field relies heavily on cross-sectional data that cannot establish whether disordered eating precedes alcohol problems, follows them, or emerges from the same vulnerabilities. The authors are explicit that there is a clear research need for adequately powered, longitudinal studies that follow people over time and include both men and women, which would allow researchers to untangle the direction of the relationship and identify when intervention would be most effective.

For clinicians working in alcohol services, the practical recommendation is comparatively simple: consider routinely asking about eating behaviours. Screening for disordered eating at intake, and monitoring it throughout treatment, could identify patients at elevated risk of dropout and relapse before those risks materialise. Because the two conditions share psychological underpinnings, interventions that build emotion regulation skills, address impulsivity and support self-esteem could plausibly benefit both problems simultaneously, though the review stops short of claiming that existing integrated treatments have been proven effective, since that evidence does not yet exist at scale. What the review does establish is that the status quo, in which eating behaviours go unassessed in AUD clinical settings, leaves a measurable and consequential blind spot.

The broader significance of this work lies in how it reframes addiction and eating disorders not as separate silos of psychiatry but as neighbouring expressions of shared vulnerability. As research on transdiagnostic mechanisms matures, the boundaries between diagnostic categories may become less clinically meaningful than the underlying processes that generate them. For the millions of people worldwide receiving treatment for alcohol use disorder, the review’s message is that recovery may depend on asking a question that services have rarely thought to ask: not just how much are you drinking, but how are you eating, and why?

Subject of Research: Comorbidity of disordered eating behaviour and alcohol use disorder in clinical populations

Article Title: Understanding the comorbidity of disordered eating behaviour and alcohol use disorder: a scoping review

Article References: Preece, A., Casey, C., Foote, G., Greville-Harris, M., McDermott, L., Murphy, J., & Sinclair, J. M. A. (2026). Understanding the comorbidity of disordered eating behaviour and alcohol use disorder: a scoping review. Journal of Eating Disorders. https://doi.org/10.1186/s40337-026-01788-3

Image Credits: AI Generated

DOI: 10.1186/s40337-026-01788-3

Keywords: alcohol use disorder, disordered eating, comorbidity, binge eating, bulimia nervosa, emotional dysregulation, impulsivity, scoping review, treatment dropout, transdiagnostic model, gender differences, screening

The study, conducted by Paweł Holas, Maria Anna Wasylkowska, Piotr Grajewski, and Patryk Roczon at the University of Warsaw, surveyed 763 adolescents aged 11 to 18, with a mean age of 15.27 years. Roughly half of the participants were female. Using validated self-report instruments administered in classrooms during the school day, the team estimated how common problematic internet use had become among Polish youth and mapped the psychological terrain that surrounds it. Roughly 5.9 percent of the sample, 45 adolescents, met the criteria for problematic internet use, a figure that closely mirrors global prevalence estimates of around six percent.

Problematic internet use is not yet a formal psychiatric diagnosis, but it draws heavily on the logic of behavioral addiction. Clinicians and researchers describe it as excessive, poorly controlled online behavior that damages personal, social, or academic functioning. It shares hallmark features with substance and behavioral addictions, including mood modification, tolerance, salience, and withdrawal-like distress when access is cut off. Adolescents are considered especially vulnerable because the neural circuitry that governs self-regulation and impulse control is still maturing, making compulsive patterns of use easier to establish and harder to break.

The health stakes are considerable. Prior research links problematic internet use to disturbed sleep, poor posture, obesity, and visual strain, as well as to depression, anxiety, stress, and attention-deficit/hyperactivity disorder. It also co-occurs with substance use, including cannabis, nicotine, and alcohol, and with behavioral addictions such as gaming disorder. Among teenagers specifically, it is associated with deteriorating peer relationships and declining school performance. Because these harms span so many domains, identifying modifiable risk and protective factors has become a central goal of prevention science.

The Polish team measured a broad battery of psychological variables: problematic internet use severity with a short form of Young’s Internet Addiction Test, generalized anxiety with the GAD-7, depressive symptoms with the PHQ-2D, perceived stress with the PSS-4, psychological inflexibility with the Avoidance and Fusion Questionnaire for Youth, emotional dysregulation with the short form of the Difficulties in Emotion Regulation Scale, and trait mindfulness with the Child and Adolescent Mindfulness Measure, recently validated in Polish adolescent samples. All scales showed acceptable to excellent internal consistency, with reliabilities ranging from 0.75 to 0.91, with the exception of the two-item depression screener, which showed only low-to-moderate reliability.

The statistical results formed a coherent picture. In hierarchical regression models, greater emotional dysregulation predicted higher problematic internet use severity, while higher trait mindfulness and the presence of siblings each predicted lower severity. Higher psychological inflexibility, anxiety, depression, and stress were each positively associated with problematic use in bivariate correlations. The final regression model accounted for 21.6 percent of the variance in problematic internet use severity, a substantial share for psychological predictors in this field.

The most technically interesting part of the study is its mediation analysis, estimated with structural equation modeling and 10,000 bootstrap resamples. The researchers positioned trait mindfulness as an upstream correlate and tested whether depressive symptoms and generalized anxiety symptoms carried its association with problematic internet use. Depressive symptoms emerged as a significant partial mediator: lower mindfulness was associated with higher depressive symptoms, which in turn were associated with greater problematic use severity, producing a significant indirect effect with a bootstrap confidence interval that excluded zero. Meanwhile, the direct negative association between mindfulness and problematic use remained significant, indicating that depression explains only part of the pathway. Generalized anxiety symptoms, by contrast, did not significantly mediate the relationship, even though mindfulness was strongly inversely associated with anxiety itself.

Group comparisons reinforced these findings. Adolescents classified as having problematic internet use scored significantly worse than their peers on anxiety, psychological inflexibility, emotional dysregulation, and perceived stress, and significantly lower on mindfulness. This pattern fits theoretical models, including acceptance and commitment therapy frameworks and the integrative I-PACE model of addictive behaviors, in which problematic online behavior functions as a maladaptive coping strategy aimed at escaping or numbing negative affect. Within that logic, mindfulness operates as a foundational capacity: adolescents who can observe difficult emotions without immediately reacting may have less need to retreat into the screen.

One of the more unexpected findings concerns family structure. The presence of siblings was associated with lower problematic internet use severity, a novel observation in a Polish sample that echoes earlier longitudinal work suggesting sibling relationships provide social support and help children regulate emotions. The authors suggest that fostering positive family dynamics and social connectedness could complement mindfulness-based strategies in prevention programs, although this correlational finding requires replication before strong claims are warranted.

The researchers are careful about what the data can and cannot show. Because the design is cross-sectional, the associations are correlational and cannot establish that mindfulness causally reduces problematic internet use; alternative directional models, in which distress erodes mindful awareness or in which excessive use itself dampens present-moment attention, remain plausible and would require longitudinal or experimental designs to test. Self-report measures are also vulnerable to reporting bias, and the low reliability of the two-item depression measure may have added noise to the mediation estimates. Still, the study aligns with a growing evidence base: meta-analyses show that mindfulness-based programs significantly reduce problematic internet use symptoms, and longitudinal studies link increases in trait mindfulness to declines in problematic use over time. Taken together, the findings position dispositional mindfulness as a promising candidate protective factor, and depressive symptoms as a key mechanism worth targeting, in the continuing effort to keep adolescents grounded in a hyperconnected world.

Subject of Research: Trait mindfulness as a protective factor against adolescent problematic internet use, with depressive symptoms as a mediator

Article Title: Adolescent problematic internet use: protective associations of trait mindfulness and the mediating role of depressive symptoms

Article References: Holas, P., Wasylkowska, M. A., Grajewski, P., & Roczon, P. (2026). Adolescent problematic internet use: protective associations of trait mindfulness and the mediating role of depressive symptoms. Current Psychology, 45(17), Article 1491. https://doi.org/10.1007/s12144-026-10048-1

Image Credits: AI Generated

DOI: 10.1007/s12144-026-10048-1

Keywords: problematic internet use, mindfulness, adolescents, depressive symptoms, anxiety, emotional dysregulation, psychological inflexibility, mediation analysis, behavioral addiction, mental health, protective factors, Current Psychology