Neurobiologically informed treatment for adults with anorexia nervosa: a novel approach to a chronic disorder

Optimizing treatment environments for trait sensitivity in eating disorders

Research has identified trait sensitivity as a potential risk factor and treatment target of eating disorders. Conceptualizations of trait sensitivity have depicted individuals with high and low trait sensitivity metaphorically as orchids and dandelions, highlighting their responsiveness to environmental conditions and associated outcomes. While orchids require careful tending to survive, with such care, they emerge extraordinary. In contrast, dandelions can survive a broad range of environmental conditions. Within a scientific framework, trait sensitivity can be conceptualized as neurobiologically-based, with heightened sensory, interoceptive, interpersonal, and emotional processing. While trait sensitivity may increase susceptibility to eating disorders, when therapists view these traits through the lens of environmental responsiveness, they can facilitate their client's inherent resilience and potential. Incorporating a model of trait sensitivity into eating disorders treatment using psychoeducation, modifying environmental stimuli, and selecting optimal interventions has the potential to increase treatment engagement, deepen therapeutic collaboration, and improve outcomes.

Transition support for patients admitted to intensive treatment for anorexia nervosa: qualitative study of patient and carer experiences of a hybrid online guided self-help intervention (ECHOMANTRA)

BACKGROUND

Adults with anorexia nervosa experience high levels of relapse following in-patient treatment. ECHOMANTRA is a novel online aftercare intervention for patients and carers, which provides psychoeducation and support to augment usual care.

AIMS

To explore patient and carer experiences of receiving the ECHOMANTRA intervention.

METHOD

This is part of the process evaluation of the ECHOMANTRA intervention as delivered in the TRIANGLE trial (ISRCTN: 14644379). Semi-structured interviews were conducted with 20 participants randomised to the ECHOMANTRA (ten patients and ten carers). Thematic analysis was used to analyse the interview transcripts.

RESULTS

Five major themes were identified: (1) Mixed experience of the intervention; (2) tailoring the intervention to the stage of recovery; (3) involvement of carers; (4) acceptability of remote support; and (5) impact of self-monitoring and accountability.

CONCLUSIONS

Participants were mostly positive about the support offered. The challenges of using remote and group support were counterbalanced with ease of access to information when needed. Components of the ECHOMANTRA intervention have the potential to improve care for people with eating disorders.

Acceptability, feasibility and short-term outcomes of temperament based therapy with support (TBT-S): a novel 5-day treatment for eating disorders

BACKGROUND

Temperament Based Therapy with Support (TBT-S) aims to target the mechanisms underlying the aetiology and maintenance of eating disorders, and was developed as an adjunct to treatment as usual. There is limited research investigating acceptability, feasibility and possible benefits of TBT-S. Therefore, the primary aim of the current study was to assess treatment feasibility and acceptability at a tertiary specialized eating disorders service in Norway, with a secondary aim to explore possible benefits in clinical outcome.

METHODS

Forty-one patients (mean age 25.3, range 18-43) and 58 supports were assessed pre- and post TBT-S. The majority of the patients were diagnosed with either anorexia nervosa or atypical anorexia nervosa. Participants completed an 18-item Patient and Support Satisfaction Questionnaire, in addition to a questionnaire assessing the usefulness of the different intervention components and strategies utilised in TBT-S, as well as a 4-item treatment satisfaction questionnaire. Measures of treatment efficacy were completed at both time-points, whereas treatment acceptability was only assessed post-treatment.

RESULTS

Findings reveal that TBT-S is a feasible treatment with high client satisfaction. Preliminary outcome data were also encouraging, and in line with previous studies. There were no voluntary drop-outs. All participants, both patients and supports, reported that TBT-S helped them deal more effectively with their challenges. After completing treatment, there was a significant decrease in patients' self-reported eating disorder psychopathology, psychosocial impairment and state anxiety, while trait anxiety remained unchanged. Patients also reported significantly improved social relationships, whereas supports reported a significant increase in (own) psychological health. There were no differences in family functioning.

CONCLUSIONS

TBT-S is a promising new treatment for eating disorders with high acceptability scores and low treatment attrition. Future studies should aim to explore methods which can most appropriately measure the effect of TBT-S and the usefulness of the different components of this treatment. Randomised controlled trials are needed to assess treatment efficacy of TBT-S.

Multifamily therapy for adolescent eating disorders: a study of the change in eating disorder symptoms from start of treatment to follow-up

BACKGROUND

This study aimed to evaluate multifamily therapy (MFT) for adolescents with eating disorders (EDs) in a clinical setting, by presenting the outcome of families participating in this treatment at a specialist ED service. MFT was an adjunct to treatment at local mental health services. In particular, the study aimed to present the change in eating disorder symptoms and psychological distress from before to after treatment and at a 6 months follow-up.

METHODS

Participants were 207 adolescents receiving outpatient MFT (10 or 5 months) at Oslo University Hospital in Norway between 2009 and 2022. Adolescents had heterogeneous ED presentations, with a preponderance of anorexia nervosa (AN) and atypical AN. All participants completed pre- and post-treatment questionnaires [The eating disorder examination questionnaire (EDE-Q) and the strengths and difficulties questionnaire (SDQ)]. 142 adolescents additionally completed the same questionnaires at 6 months follow-up. Weight and height were measured at all time points.

RESULTS

Linear mixed model analyses showed that from start of treatment to follow-up, there was a significant increase in BMI percentile (p < 0.001) and a significant decrease in EDE-Q global score (p < 0.001) and SDQ total score (p < 0.001).

CONCLUSIONS

The study shows that adolescents with an eating disorder who received adjunct outpatient MFT in a real world clinical setting, experienced reductions in ED symptoms comparable to that found in a randomized controlled trial.

TRIAL REGISTRATION

The data used in this study was collected as part of routine clinical procedures for quality assurance and trial registration is therefore not required.

The peril and promise of sensitivity in eating disorders

Differential susceptibility, a reconceptualization of the diathesis-stress model of psychopathology, describes gene-environment interactions that reflect individual differences in responsiveness to environmental influences, both detrimental and beneficial. This model has been described metaphorically by the classification of orchids, which thrive under optimal care but wither under adverse conditions, and dandelions, which weather broad environmental circumstances but are less responsive to careful cultivation. Etiological research in the field of eating disorders has largely focused on the identification of specific behavioral phenotypes, temperamental traits, genotypes and neurobiological processes that confer risk. In this article, we propose that these putative vulnerability factors represent phenotypes and endophenotypes of a genetic predisposition towards environmental sensitivity. We assert that this sensitivity not only transmits eating disorder risk but also confers resilience, depending on the circumstances. In particular, we propose that differential susceptibility can be used as a framework to organize disparate temperamental and neurobiological findings and their complex interplay with various developmental, environmental and sociocultural influences to increase eating disorder risk and treatment responsiveness. Finally, we assert that viewed through the lens of differential susceptibility, sensitivity can be leveraged to refine our interventions and develop novel treatment and prevention strategies to support favorable outcomes for individuals with eating disorders.

Temperament-based treatment for young adults with eating disorders: acceptability and initial efficacy of an intensive, multi-family, parent-involved treatment

BACKGROUND

Adult eating disorder treatments are hampered by lack of access and limited efficacy. This open-trial study evaluated the acceptability and preliminary efficacy of a novel intervention for adults with eating disorders delivered to young adults and parent-supports in an intensive, multi-family format (Young Adult Temperament-Based Treatment with Supports; YA-TBT-S).

METHODS

38 YA-TBT-S participants (m age = 19.58; SD 2.13) with anorexia nervosa (AN)-spectrum disorders, bulimia nervosa (BN)-spectrum disorders, and avoidant/restrictive food intake disorder (ARFID) completed self-report assessments at admission, discharge, and 12-month follow-up. Assessments measured program satisfaction, eating disorder psychopathology and impairment, body mass index (BMI), and trait anxiety. Outcomes were analyzed using linear mixed effects models to examine changes in outcome variables over time.

RESULTS

Treatment was rated as highly satisfactory. 53.33% were in partial or full remission at 12-month follow-up. 56% of participants received other treatment within the 12-month follow-up period, suggesting that YA-TBT-S may be an adjunctive treatment. Participants reported reductions in ED symptomatology (AN and BN), increases in BMI (AN and ARFID), and reductions in clinical impairment (AN and ARFID) at 12-month follow-up.

CONCLUSIONS

YA-TBT-S is a feasible and acceptable adjunctive treatment for young adults with a broad range of ED diagnoses and may be a method for involving parents in ED treatment in ways that are acceptable to both parents and YA. Further evaluation of efficacy is needed in larger samples, and to compare YA-TBT-S to other ED treatment approaches. Plain English summary Eating disorders are costly and dangerous psychiatric disorders that affect millions of individuals each year. Despite their risks and societal costs, currently available treatments are limited. This study examined the acceptability and efficacy of Young Adult, Temperament-Based Treatment with Supports (YA-TBT-S), a new treatment program for adults with eating disorders. YA-TBT-S was rated highly, and a significant portion of participants improved based on ratings collected 12 months after program participation. Those with anorexia nervosa (AN) and bulimia nervosa (BN) showed significant reductions in eating disorder pathology, and those with AN and avoidant/restrictive food intake disorder (ARFID) showed increases in BMI over time.

Adding maintaining factors to developmental models of anorexia nervosa: An empirical examination in adolescents

OBJECTIVE

A biopsychosocial approach has been proposed to explain the pathogenesis of anorexia nervosa (AN), despite only a few of the existing etiological models having received empirical support. The aim of this study was to empirically investigate Herpertz-Dahlmann, Seitz, and Konrad (2011, https://doi.org/10.1007/s00406-011-0246-y)'s developmental model and to consider if interpersonal reactions to the illness might serve as maintaining factors following the model proposed by Treasure and Schmidt (2013, https://doi.org/10.1186/2050-2974-1-13) METHOD: One hundred adolescents and their families were participated in the study: 50 diagnosed with AN, paired by age and parents' socio-economic status with 50 adolescents without a pathology. Biological, psychological and familial variables were assessed using ten questionnaires and a blood analysis test. Additionally, structural equation modeling was conducted to assess two hypothetical models.

RESULTS

The fit of both models was good after the addition of two covariate parameters (e.g., Comparative Fit Index > 0.96 and Tucker-Lewis Index > 0.95). Premorbid traits were linked to body dissatisfaction and to the number of stressful life events; this in turn was linked to AN symptoms. Biological and familial consequences reinforced this pathology.

CONCLUSIONS

Our findings provide support for both models, suggesting that inter relationships between bio-psycho-familial variables can influence the course of AN during adolescence.

The acceptability, feasibility, and possible benefits of a neurobiologically-informed 5-day multifamily treatment for adults with anorexia nervosa

OBJECTIVE

Novel treatments for adults with anorexia nervosa (AN) are lacking. Recent scientific advances have identified neurobiologically-driven temperament contributors to AN symptoms that may guide development of more effective treatments. This preliminary study evaluates the acceptability, feasibility and possible benefits of a multicenter open trial of an intensive 5-day neurobiologically-informed multifamily treatment for adults with AN and their supports (SU). The temperament-focused treatment combines psychoeducation of AN neurobiology and SU involvement to develop skills to manage traits contributing to disease chronicity.

METHOD

Fifty-four adults with AN and at least one SU (n = 73) received the 5-day treatment. Acceptability, feasibility, and attrition were measured post-treatment. Clinical outcome (BMI, eating disorder psychopathology, family function) was assessed post-treatment and at >3-month follow-up.

RESULTS

The treatment had low attrition, with only one drop-out. Patients and SU rated the intervention as highly acceptable, and clinicians reported good feasibility. At post-treatment, patients demonstrated significantly increased BMI, reduced eating disorder psychopathology, and improved family function. Benefits were maintained in the 39 patients who completed follow-up assessment, with 62% reporting full or partial remission.

DISCUSSION

Preliminary results are promising and suggest this novel treatment is feasible and acceptable. To establish treatment efficacy, fully-powered randomized controlled trials are necessary.

Extinction theory & anorexia nervosa: Deepening therapeutic mechanisms

By virtue of adopting the core symptomatic fear (i.e., a fear of weight gain) as a primary treatment target, the treatment of AN centrally involves exposure-driven processes. However, exposure trials targeting the fear of weight gain in AN have been sparse, yielding mixed results to date. In translating extinction theory to the treatment of AN, it is likely that the absence of a clear distinction between what constitutes the core feared cue and the core feared outcome has stymied the application of exposure treatments in AN. This review considers several configurations of the core fear association in AN, noting distinct therapeutic strategies which may allow for more precise efforts in violating fear-based expectancies. Specific guidance is offered in the clinical decision making process as to which strategies might best promote inhibitory learning, and a clinical case is discussed, in which treatment was adjusted to specifically violate the core underlying fear association.