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Restrictive intake self-harm (RISH) describes a pattern of severe food and fluid restriction whose functions emerge primarily for reasons other than weight or shape psychopathology. RISH exhibits a distinct phenomenology from anorexia nervosa, rooted in conditional caregiving, attachment disruption and maladaptive internal working models that inhibit direct help-seeking. This paper draws on attachment theory and evidence on the functions of eating-disordered behaviour to argue that three relational configurations (boundary confusion, subjugation of needs and escalating distress signalling) create vulnerability to RISH and shape how individuals use restriction within relational contexts. It further proposes that risk-driven thresholds, hospital admissions and crisis-responsive models that characterise NHS care delivery may inadvertently reinforce these dynamics by validating the belief that suffering is required to access care. Highly restrictive and directive treatment plans for those with RISH can result in the escalation of dietary restriction, trauma and clinical deterioration. Medicalisation of care can also inadvertently reinforce care-seeking behaviour through restriction. A relational framework is therefore essential for understanding RISH, providing interventions that minimise iatrogenic harm and offering relational experiences in which needs can be expressed and met without bodily deterioration.
Although there may be common challenges and opportunities for early career researchers (ECRs), those working in the field of eating disorders may face unique barriers and require tailored support.
Aims
The current study sought to explore consensus on career concerns and opportunities in eating disorder ECRs.
Method
A three-stage Delphi model was conducted. Round 1 involved participants rating career concern and opportunity statements, with free-text responses. Researchers then generated a list of Delphi statements, which were shared in round 2, and participants were asked to indicate their level of agreement. A final round was shared, with median ratings from round 2 and the option to change or further expand on responses. Final consensus was calculated as percentage agreement.
Results
Career concerns reaching consensus included timeline pressures, personal sacrifices for roles, unclear career trajectories, job insecurity, funding concerns, fears of being pushed out of the field and pressures to publish. There was no consensus on a range of other concerns (work/life balance, isolation, mental health and well-being and power imbalances), suggestive of context-dependent experiences. Participants agreed that almost all the presented career opportunities were of importance to eating disorder ECRs.
Conclusions
Findings suggest that eating disorder ECRs face significant barriers toward remaining in the field. Although many concerns reflect broader ECR experience (limited research funding, associated job insecurity), some appear to be particularly exacerbated for ECRs working in the eating disorder field. Further research is needed to inform directions for tailored support strategies, such as peer support, mentoring schemes and increased funding from governing bodies.
Anorexia nervosa (AN) is an eating disorder that is mediated by psychological and metabolic factors, yet it is unclear how these factors interact. The NAMA trial objective is to clarify the metabo–psychiatric interaction and identify how it affects AN patients’ behaviour. This randomised trial will recruit thirty-six treatment-naïve female AN patients, 13–18 years of age, and thirty-six matched healthy controls. Participants will undergo psychiatric assessments followed by 12-h overnight fasting. The next morning, baseline assessments of outcomes will be performed. Patients will be randomly allocated 1:1 to receive a mixture with calories or receive a mixture without calories. Healthy controls will also be allocated to receive mixtures with/without calories. Mixtures will be standardised for taste and appearance, and allocation will be masked. The primary outcome measure is resting-state functional MRI 60 min post-consumption of the mixture. Secondary outcomes include (1) blood samples to study markers reflecting metabolic states, hunger/satiety and stress responses, (2) psychometric evaluations of subjective experiences and (3) assessment, in a second meal 3 h later, of the effects of previous calorie intake on subsequent food consumption. This article describes the study protocol, including the analysis plan, for a randomised controlled trial to comprehensively evaluate the effects of calorie intake in AN. The trial will distinguish psychological and metabolic neuronal networks associated with food intake and uncover how their integration affects food intake and other hallmark symptoms in AN. The aim is to accelerate treatment development by identifying brain mechanisms that drive AN.
Anorexia nervosa (AN) is a complex psychiatric illness with severe and life-threatening medical sequelae, including death. Existing evidence-based treatments are linked to good prognosis and full recovery in many. For a small minority of critically ill patients, treatment decisions extend beyond voluntary engagement. Severe cases may involve involuntary hospitalisation, nasogastric feeding, physical restraint, and other coercive measures. While these interventions are sometimes necessary to prevent death, they raise profound ethical concerns. This article explores the ethical tensions in treatment of individuals with AN through the lens of the four principles of biomedical ethics, respect for autonomy, beneficence, non-maleficence, and justice, examining the implications for clinical practice. It also outlines the legal mechanisms in Ireland governing involuntary treatment for AN. It considers treatment principles in children and adolescents as well as adults.
Studies have consistently found that up to 20% of people with anorexia nervosa experience a persistent illness, resulting in considerable psychosocial impairment, morbidity and mortality. This has been variously termed severe and enduring anorexia nervosa or longstanding anorexia nervosa (L-AN). Conflicting findings have hindered progress in distinguishing the nosological features of individuals with persistent illness.
Aims
This study aims to investigate the putative defining features of individuals reporting symptoms of L-AN, including consideration of their treatment trajectory.
Method
This cross-sectional study, drawing from a mixed-methods design, utilised a sample of symptomatic individuals who reported experiencing eating disorder treatment (n = 208). Several qualitative and quantitative data strands (a–c) were embedded within a single, self-report questionnaire measuring eating disorder severity and treatment experiences. Between-group comparisons were used to compare those of shorter (<3 years) and longer (>7 years) duration of illness.
Results
No between-group differences were found in measures of severity, including body mass index (kg/m2), eating disorder symptom scores, psychological distress or perceived health-related quality of life. However, those with L-AN had a significantly higher number of mental and physical health comorbidities, longer treatment delay, greater number of episodes of treatment and poorer subjective ratings of their treatment experiences.
Conclusions
Delineating L-AN by severity may be inappropriate; anorexia nervosa of any duration is a severe illness. This study suggests that treatments, or lack thereof, may have an inadvertent impact on duration of illness. Future focus needs to be on reconceptualising L-AN and its treatments. Treatment refinements informed by lived experience are proposed.
Anorexia nervosa (AN) often persists for years, resulting in high morbidity and mortality. Hypoglycaemia, typically assessed from a single morning blood sample, is a critical severity indicator. Continuous glucose monitoring (CGM) provides more comprehensive information on glycaemic patterns. This study aimed to characterize glycaemia in patients with AN and identify its potential drivers among metabolic severity (current BMI), clinical severity (Eating Disorder Inventory-2 [EDI-2] score), and illness duration, in a real-world outpatient setting.
Methods
This cross-sectional study included female outpatients with restricting subtype AN. Participants underwent CGM for five days in their usual environment. Collected data comprised age, BMI, illness duration, EDI-2 score, and continuous glycaemic measurements. Glycaemic biomarkers (hypoglycaemic area under the curve [AUC], mean and minimum glycaemia, and coefficient of variation) were computed over 24-hour periods.
Results
Three hundred and four female patients were monitored for a mean of 4.8 days. No significant correlations were observed between glycaemic biomarkers and BMI. Illness duration was significantly associated with mean and minimum glycaemia (r = 0.26 and 0.23, respectively, p < 0.001) and with hypoglycaemia AUC (r = −0.25, p < 0.001).
Conclusions
In female patients with restricting subtype AN, illness duration, rather than BMI, appears to significantly influence glycaemic profiles. This may reflect glycaemic adaptations, a hypothesis that warrants further investigation using CGM, a practical tool for exploring metabolic changes and their potential clinical significance in AN.
Anorexia nervosa is associated with high personal and financial costs for sufferers, carers and society in general, but little is known about the long-term health economic burden.
Aims
To examine healthcare utilisation, social assistance, sick leave and disability pension in individuals with anorexia nervosa over a period of 30 years.
Method
Fifty-one individuals with adolescent-onset anorexia nervosa and 51 matched comparison cases (COMP) were recruited in the community and followed prospectively from 1985. All individuals were examined on five occasions. At the 30-year follow-up, mean age 44, data on in- and out-patient care, prescribed medications, social assistance, sick leave and disability pension were collected from Swedish national registers.
Results
The anorexia nervosa group had more days of in-patient care (p < 0.001) and out-patient visits to psychiatry (p < 0.001), more days of sick leave (p = 0.006), more days of disability pension (p = 0.002) and were prescribed more psychotropic medication (p = 0.045) compared with the COMP group. Of the anorexia nervosa group, 22% had ever received a disability pension compared with 2% in the COMP group (p = 0.004) and less than half the anorexia nervosa group worked full-time at the 30-year follow-up. In the anorexia nervosa group, 45% had received social assistance at some point, compared with 22% in the COMP group (p = 0.02). Age at onset of anorexia nervosa emerged as a predictor of healthcare utilisation with significant odds ratios for psychiatric in-patient (odds ratio 0.61, 95% CI: 0.39, 0.94; p = 0.027) and out-patient care (odds ratio 0.63, 95% CI: 0.40, 0.98; p = 0.042), i.e. individuals with a later onset of anorexia nervosa were less likely to require psychiatric care.
Conclusions
The long-term burden of adolescent-onset anorexia nervosa comprises increased utilisation of healthcare and dependence on society for a significant minority. A later onset of anorexia nervosa predicted a lower healthcare utilisation.
The treatment of longstanding severe eating disorders is a public concern amid rising service pressures and legal cases. These cases raise complex issues about the interface between legislative schemes, restrictive practices, best interests, treatment refusal and potential interaction with assisted dying legislation, when patients lack capacity yet clearly express wishes.
Eating disorders, particularly anorexia nervosa and bulimia nervosa, are significant global health challenges.
Aims
This study analyses historical trends and forecasts future patterns of eating disorders among young adults aged 15–29 years using machine learning techniques.
Method
Global data on anorexia nervosa and bulimia nervosa from the Global Burden of Disease study 2021 spanning 1990 to 2021 were analysed, examining incidence, prevalence and disability-adjusted life years (DALYs) across age groups, sociodemographic index (SDI) levels and regions. Eight machine-learning models were employed to forecast trends from 2022 to 2050.
Results
Bulimia nervosa showed more pronounced increases compared to anorexia nervosa across all metrics. The 15–19 age group had the highest incidence rates, while the 20–24 age group showed the highest prevalence and DALY rates. Low SDI regions experienced substantial increases, with bulimia nervosa prevalence rising by 179.05%. East Asia demonstrated the most significant rise in age-standardised rates. The Prophet model best forecast anorexia nervosa trends, while ARIMA performed best for bulimia nervosa. Projections indicate continued increases through 2050 for both disorders.
Conclusions
The global burden of eating disorders among young adults is projected to increase significantly by 2050, with bulimia nervosa showing more rapid growth than anorexia nervosa. Substantial variations exist across age groups, SDI levels and regions. These findings highlight the urgent need for enhanced prevention programmes targeting high-risk age groups, strengthened healthcare capacity in rapidly developing regions and evidence-based policy interventions to address the growing global burden of eating disorders.
Shared genetic risk has been shown across psychiatric disorders. In particular, anorexia nervosa (AN), obsessive-compulsive disorder (OCD), and schizophrenia (SCZ) show shared genetic risk that matches clinical evidence of shared illness and cognitive phenotypes. Given this evidence, we leveraged a large US-based population-based study to determine genetic associations of disorder-specific and shared psychiatric, cognitive, and brain markers and explore whether the latter might be state versus trait markers in eating disorders.
Methods
We used data from the population-based Philadelphia Neurodevelopmental Cohort (N = 4,729) and conducted sex-stratified analyses to test for associations between genetic risk for three disorders (AN, OCD, and SCZ) and mental health phenotypes, neurocognitive traits, and cortical features in a non-clinical population. Exploratory analyses on cortical features were run on a subset with neuroimaging data (N = 626).
Results
Genetic risk for AN was significantly associated with body image distortion (pFDR = 0.02), and body image distortion was significantly related to a reduction in grey matter volume (pFDR = 0.05).
Conclusion
Genetic risk for AN associates with AN trait in a non-clinical sample of youth, particularly in females. Whilst genetic risk was not associated with cognitive or cortical markers, the AN phenotype was associated with cortical markers.
Standard treatments for eating disorders (EDs) typically include nutritional rehabilitation, psychotherapy, and pharmacotherapy, often resulting in modest effectiveness. Neuromodulation has been proposed as a potential add-on strategy. This review aims to critically evaluate its effects on EDs.
Methods
The PICO framework was used to conduct a search according to the PRISMA guidelines for systematic reviews (PROSPERO Registration no. CRD42024559700). Descriptive and clinical data for each study, including comorbidity and safety, were tabulated by disorder. Quality assessment was performed using the RoB2 and ROBINS-I tools.
Results
Fifty-eight studies examining rTMS, tDCS, DBS, ECT, iTBS, and dTMS in AN, BN, and BED met inclusion criteria. In AN, the effects of rTMS and tDCS on weight and BMI were modest, with notable benefits for adolescents. Conversely, in refractory AN, DBS produced significant and lasting increases in BMI and reductions in comorbid psychopathology. For BN, single-session rTMS reduced cravings acutely, while multisession results were mixed; tDCS enhanced self-control. In BED, right-DLPFC tDCS decreased cravings, food intake, and binge frequency, showing a dose-dependent effect, whereas early data on NAcc DBS were promising but limited.
Conclusions
Noninvasive stimulation methods effectively reduced cravings and impulsivity, showing more consistent improvements in BN and BED than in weight restoration for AN. Overall, this pattern replicates recent review reports. However, variations in study designs, stimulation protocols, and outcome measures may undermine the reliability of these conclusions and complicate comparisons across studies. Future studies should be adequately powered, multisession, with durability endpoints, and target and dose refinement.
The 34-item Body Shape Questionnaire (BSQ) was first published in Cooper, Taylor, Cooper, and Fairburn (1987) with the items in an appendix of the paper. It assesses concerns with body shape that are typically found in women and which in extreme form have been linked to eating disorders. The BSQ is a self-report measure that can be administered online or in person. It is free to use unless used for commercial purposes. This chapter discusses the development of the BSQ, administration and timing. It then provides evidence of its psychometric explorations including strong reliability and discriminant validity. The BSQ has been found to have one main factor. The chapter then describes the two 16-item and four 8-item abbreviated forms and the translations available. Detail on the development of the measure are available included in Taylor’s doctoral thesis available on the BSQ website (https://https://www.psyctc.org/psyctc/root/tools/bsq/ & https://www.psyctc.org/psyctc/root/tools/bsq/bsq-thesis/).
Eating disorders are severe psychiatric conditions associated with high mortality rates, particularly among young people. These disorders often co-occur with self-harm and suicidal ideation, yet the temporal dynamics between these variables remain poorly understood.
Aims
This study aims to elucidate the longitudinal associations between symptoms of body dissatisfaction and disordered eating, self-harm and suicidal ideation using structural equation modelling.
Method
Repeated measures of these phenotypes were used to construct a hypothetical model that includes cross-path analyses within and between the variables in two cohorts: the Twins Early Development Study (TEDS; ages 16, 21 and 26 years; N = 5196), representing a general population sample, and the COVID-19 Psychiatry and Neurological Genetics study (COPING; data collected between June 2020 and July 2021; N = 490), which focused on individuals with a history of anxiety or depression. In the TEDS cohort, symptoms of disordered eating, self-harm and suicidal ideation showed limited continuity across adolescence and young adulthood, with peak symptom severity at age 21 years.
Results
Cross-domain associations revealed that both self-harm and suicidal ideation at age 21 years were more strongly associated with disordered eating at 26 years than the reverse. In contrast, the COPING cohort exhibited greater stability in symptoms over time but showed minimal cross-domain effects.
Conclusions
The effects of self-harm and suicidal ideation on disordered eating in early adulthood are stronger than the influence of disordered eating on suicidality.
Eating disorders are complex conditions that pose significant challenges for diagnosis and treatment. Recent updates to diagnostic criteria in the DSM-5 and ICD-11 have refined our understanding of eating disorders, underscoring the need for early intervention to improve recovery outcomes. This chapter reviews these changes and their implications for clinical practice. We explore the increasing complexity of eating disorder presentations, particularly those involving neurodevelopmental and personality disorders, which require nuanced treatment approaches. Additionally, the chapter examines the impact of social media on eating behaviours, highlighting both the negative influences and the potential benefits of online resources. The rise of digital therapies, especially in response to the Covid-19 pandemic, is discussed as a key development in expanding access to care. The chapter also addresses the evolving clinical presentation of eating disorders, noting that conditions like binge eating disorder, other specified feeding or eating disorders, and avoidant restrictive food intake disorder are now more common. To meet the needs of young people, we advocate for improved community care, public health strategies and further research into effective treatments. This chapter emphasises the urgent need to enhance recognition and support for ED across health care systems and community settings.
Anorexia nervosa has potential to influence the development and function of the gastrointestinal system. We assessed the association between maternal anorexia nervosa and risk of gastrointestinal morbidity in offspring.
Methods
We analyzed a longitudinal cohort of 1,269,370 children born in Quebec, Canada, between 2006 and 2022. The exposure was maternal anorexia nervosa. The outcome was hospitalization for pediatric gastrointestinal disorders, including hypertrophic pyloric stenosis, inflammatory bowel disease, and other digestive morbidity. Follow-up ranged from 1 to 17 years. We used adjusted Cox regression models to obtain hazard ratios (HRs) and 95% confidence intervals (CIs) for the association between maternal anorexia nervosa and pediatric gastrointestinal disorders.
Results
A total of 2,447 children (0.2%) had a mother with anorexia nervosa. By age 17 years, the cumulative incidence of gastrointestinal disorders was higher among children whose mothers had anorexia nervosa than other children (165.7 vs. 129.4 per 1,000). Compared with no anorexia, maternal anorexia nervosa was associated with a greater risk of any childhood gastrointestinal disorder (HR: 1.42, 95% CI: 1.26–1.61), particularly hypertrophic pyloric stenosis (HR: 2.51, 95% CI: 1.35–4.66), inflammatory bowel disease (HR: 2.46, 95% CI: 1.67–3.64), and rectal hemorrhage (HR: 3.46, 95% CI: 1.97–6.09). Children whose mothers developed anorexia nervosa after age 20 years or were hospitalized more than once for anorexia had the greatest risk of gastrointestinal morbidity. The associations were not explained by digestive birth defects.
Conclusion
Maternal anorexia nervosa is associated with pediatric gastrointestinal disorders that could potentially be mitigated with psychosocial support, nutritional rehabilitation, and breastfeeding.
Pharmacological efforts to treat anorexia nervosa (AN) have predominantly repurposed medications that treat conditions with overlapping symptoms and yielded generally disappointing results. Despite limited empirical support, SSRIs are often prescribed to patients with AN. Whether SSRIs are effective in a subgroup of individuals with AN, such as those with depression, is not known.
Methods
A secondary analysis of a randomized trial of fluoxetine versus placebo for relapse prevention in AN was conducted. Participants (n = 92) were weight-restored women with AN who completed the Beck Depression Inventory (BDI) at the time of randomization. BDI scores were dichotomized to reflect moderate/severe depression (BDI > 20, n = 26). A Cox Proportional Hazards model estimated the association of the level of depression, medication, and their interaction with time to relapse. Mixed effects models examined the effects of medication on symptom trajectories in high versus low depression groups and whether depression severity modified the effect of the drug on symptom trajectory.
Results
There was a significant interaction between medication and depression severity in time to relapse (hazard ratio = 0.46, 95% CI: [0.25, 0.85], p = .01). Depression severity modified the effect of fluoxetine on the time course of symptoms of depression (β = −0.27, 95% CI: [−0.42,-0.12], p = 0.001) and bulimia (β = −0.15, 95% CI: [−0.25,-0.05], p = 0.004) in the twelve month follow-up period.
Conclusions
Fluoxetine was more effective than placebo in reducing relapse among more depressed, weight-restored individuals with AN. These results require replication but provide support for the use of antidepressant medication for patients with AN who remain depressed following weight restoration.
Social function is increasingly demonstrated as a factor in risk, maintenance and outcome of eating disorders, but not emphasised in theoretical models of, and treatment approaches to, adolescent eating disorders.
Aims
To adapt Schmidt and Treasure’s cognitive interpersonal model of anorexia nervosa to incorporate developmental and transdiagnostic components.
Method
Qualitative interviews with young people aged 12–16 years (inclusive), who are in contact with child and adolescent community eating disorders services, and their parents, subjected to thematic analysis.
Results
Five key themes emerged that were mutually dependent on a sixth theme of emotion regulation and coping. These themes were: peer relationships, change and uncertainty, thinking styles, appearance and achievement-based values, and family relationships.
Conclusions
Peer relationships emerged as distinct from family relationships in this population, and a unifying theme was emotion regulation and coping. The framework could guide clinical assessment and the development or adaptation of interventions to address the themes identified. Research is needed to understand the role of the themes in treatment response and outcomes.
Howard CH Khoe, National Psychiatry Residency Programme, Singapore,Cheryl WL Chang, National University Hospital, Singapore,Cyrus SH Ho, National University Hospital, Singapore
Chapter 15 covers the topic of anorexia nervosa. Through a case vignette with topical MCQs for consolidation of learning, readers are brought through the diagnosis and treatment of a patient with anorexia nervosa. topics covered inlcude diagnosis, physical examination findings, inpatient admission criteria, investigations, refeeding syndrome, pharmacological and non-pharmacological managment of anorexia nervosa and avoidant/ restrictive food intake disorder.
Eating disorders (ED) are psychiatric conditions with profound impacts on physical health, emotional well-being and quality of life. They are associated with reduced employment participation and increased healthcare costs, representing a significant public health concern. Major ED, including anorexia nervosa, bulimia nervosa, binge-eating disorder and other specified feeding and eating disorders, are closely linked to oral health complications, which serve as both diagnostic markers and therapeutic targets in ED management. This narrative review explores twenty-two studies, organised around transdiagnostic behavioural and physiological risk factors, including caloric restriction, purging behaviours, binge episodes and oral hygiene neglect. Evidence indicates that malnutrition, vomiting-induced acid exposure, high intake of cariogenic foods and inconsistent hygiene practices contribute to the deterioration of dental and periodontal health. The review highlights the diagnostic and therapeutic potential of oral assessments in ED management, underscoring the importance of early detection. A dedicated section addresses the role of dental professionals, proposing individualised care pathways and the use of clinical indices such as the Basic Erosive Wear Examination and Schiff air index, alongside emerging tools like tele dentistry. The findings advocate for a multidisciplinary approach, incorporating nutritional support, psychological therapy and targeted dental treatment, which is crucial for developing comprehensive care plans. Such collaboration enhances the effectiveness of interventions, addressing both the physiological and psychological dimensions of ED to improve patient outcomes.
Anorexia nervosa (AN) is often regarded as ‘difficult to treat’. This may in part be due to co-occurring diagnoses and traits that are less directly targeted either at the point of formulation or in treatment. Schema therapy may be suitable for individuals with AN who have not benefited from first-line interventions. It offers a schema formulation and change techniques that target broader characterological ways of being. However, schema therapy is typically 18 months duration or longer, and therefore not well-suited to services with resource constraints. We present a schema-informed cognitive behavioural therapy (CBT) approach for AN, based on a formulation that encapsulates the experience of chronic unmet emotional need and which uses cognitive and behavioural techniques to target schema and schema mode change over a relatively brief treatment. We argue that the experiential techniques of schema therapy can augment the change process for those with AN, by gradually turning up the ‘emotional heat’ and increasing tolerance for emotion. After outlining this proposed model, we present findings from a case series of n=11 patients with AN or atypical AN. All patients had received first-line eating disorder treatment(s) previously and n=8/11 had prior experience of day or in-patient treatment. Results supported the acceptability and feasibility of schema-informed CBT for AN: no patients discontinued treatment early, mean number of sessions was 31 (SD 10.28), and patient satisfaction was high. Improvements were seen in AN psychopathology, depression/anxiety, schemas and schema modes, mostly with medium effect sizes. We propose areas for future research and consideration.
Key learning aims
(1) To understand the rationale for a schema-informed CBT approach for anorexia nervosa.
(2) To understand the key components of schema-informed CBT for anorexia nervosa, including treatment objectives, stages of treatment and core methods.
(3) To evaluate the empirical evidence for schema-informed CBT with anorexia nervosa.
(4) To critically reflect on future opportunities for research and clinical practice with schema-informed CBT and eating disorders.