Psychological Treatment of Eating Disorders

Using Continuous Glucose Monitoring to Passively Classify Naturalistic Binge Eating and Vomiting Among Adults With Binge-Spectrum Eating Disorders: A Preliminary Investigation

OBJECTIVE

Binge eating and self-induced vomiting are common, transdiagnostic eating disorder (ED) symptoms. Efforts to understand these behaviors in research and clinical settings have historically relied on self-report measures, which may be biased and have limited ecological validity. It may be possible to passively detect binge eating and vomiting using data collected by continuous glucose monitors (CGMs; minimally invasive sensors that measure blood glucose levels), as these behaviors yield characteristic glucose responses.

METHOD

This study developed machine learning classification algorithms to classify binge eating and vomiting among 22 adults with binge-spectrum EDs using CGM data. Participants wore Dexcom G6 CGMs and reported eating episodes and disordered eating symptoms using ecological momentary assessment for 2 weeks. Group-level random forest models were generated to distinguish binge eating from typical eating episodes and to classify instances of vomiting.

RESULTS

The binge eating model had accuracy of 0.88 (95% CI: 0.83, 0.92), sensitivity of 0.56, and specificity of 0.90. The vomiting model demonstrated accuracy of 0.79 (95% CI: 0.62, 0.91), sensitivity of 0.88, and specificity of 0.71.

DISCUSSION

Results suggest that CGM may be a promising avenue for passively classifying binge eating and vomiting, with implications for innovative research and clinical applications.

Adaptive learning from outcome contingencies in eating-disorder risk groups

Eating disorders are characterised by altered eating patterns alongside overvaluation of body weight or shape, and have relatively low rates of successful treatment and recovery. Notably, cognitive inflexibility has been implicated in both the development and maintenance of eating disorders, and understanding the reasons for this inflexibility might indicate avenues for treatment development. We therefore investigate one potential cause of this inflexibility: an inability to adjust learning when outcome contingencies change. We recruited (n = 82) three groups of participants: those who had recovered from anorexia nervosa (RA), those who had high levels of eating disorder symptoms but no formal diagnosis (EA), and control participants (HC). They performed a reinforcement learning task (alongside eye-tracking) in which the volatility of wins and losses was independently manipulated. We predicted that both the RA and EA groups would adjust their learning rates less than the control participants. Unexpectedly, the RA group showed elevated adjustment of learning rates for both win and loss outcomes compared to control participants. The RA group also showed increased pupil dilation to stable wins and reduced pupil dilation to stable losses. Their learning rate adjustment was associated with the difference between their pupil dilation to volatile vs. stable wins. In conclusion, we find evidence that learning rate adjustment is unexpectedly higher in those who have recovered from anorexia nervosa, indicating that the relationship between eating disorders and cognitive inflexibility may be complex. Given our findings, investigation of noradrenergic agents may be valuable in the field of eating disorders.

Measuring cognitions during exercise: Associations between thoughts and eating disorder behaviors over a 3-week ecological momentary assessment study

OBJECTIVE

Previous work has outlined cognitive beliefs about exercise in general, but very little is known about momentary cognitions while engaging in pathological exercise. The primary aim of this study was to explore thought content during exercise and to test whether these thoughts predicted later engagement in eating disorder behaviors. We also tested associations between thoughts and specific exercise activity.

METHOD

We monitored 31 women with clinically significant eating psychopathology for 3 weeks via ecological momentary assessment as they reported on their exercise and eating disorder behaviors, and thoughts about shape, weight, or calories during exercise. Thoughts were self-reported upon cessation of each exercise session.

RESULTS

Thinking about weight loss during exercise predicted later engagement in body-checking behaviors. Weight-bearing exercise was associated with a decreased likelihood of thinking about calories but an increased likelihood of thinking about shape during exercise.

DISCUSSION

These findings show that shape and weight thoughts are present during exercise and that their influence on eating disorder behaviors may exist on a much briefer time scale (i.e., within a day) than previous studies show. Clinically, future studies may seek to test interventions aimed at changing or restructuring cognitions during exercise to help shape adaptive exercise behavior during and after treatment.

PUBLIC SIGNIFICANCE

This is the first study measuring thoughts during pathological exercise in real-time among those with eating disorder psychopathology. The results show that thinking about weight loss during exercise might increase the likelihood of engaging in body-checking behaviors. Findings will inform the development of treatment approaches to help those in recovery from eating disorders re-engage with exercise.

Change in adaptive and maladaptive exercise and objective physical activity throughout CBT for individuals with eating disorders

Maladaptive exercise (i.e., exercise that compensates for binge eating or is used to avoid negative consequences of not exercising-like weight gain) is a common eating disorder (ED) behavior, yet, some individuals with EDs only engage in adaptive exercise. CBT for EDs targets reducing maladaptive exercise but does not address adaptive exercise. Thus, research is limited on how adaptive and maladaptive exercise are impacted during CBT for EDs. The current study examined how assessor-rated adaptive and maladaptive exercise and objectively measured physical activity changed over a 12-week CBT treatment among adults with transdiagnostic binge eating and restrictive eating that did and did not engage in maladaptive exercise at the start of treatment (n = 13 non-maladaptive exercise group, n = 17 maladaptive exercise group). The overall amount of adaptive and maladaptive exercise was measured via the Eating Disorder Examination Interview and objectively measured physical activity (e.g., step count, minutes of moderate-to-vigorous physical activity [MVPA]) was measured via a wrist-worn fitness tracker. Throughout treatment, the overall amount of adaptive exercise did not significantly change for both groups, but the overall amount of maladaptive exercise significantly decreased in the maladaptive exercise group. Step count did not significantly change for both groups, but minutes of MVPA significantly increased over treatment for the non-maladaptive exercise group. Increases in step count and minutes of MVPA were not associated with ED symptom changes in either group. These results enhance an understanding of exercise changes during transdiagnostic CBT-based ED treatment for individuals with varying baseline exercise profiles.Level of evidence: Level 1, randomized controlled trial.

Using Continuous Glucose Monitoring to Detect and Intervene on Dietary Restriction in Individuals With Binge Eating: The SenseSupport Withdrawal Design Study

BACKGROUND

Dietary restraint is a key factor for maintaining engagement in binge eating among individuals with binge eating disorder (BED) and bulimia nervosa (BN). Reducing dietary restraint is a mechanism of change in cognitive behavioral therapy (CBT) for individuals with BN and BED. However, many individuals who undergo CBT fail to adequately reduce dietary restraint during treatment, perhaps owing to difficulty in using treatment skills (eg, regular eating) to reduce dietary restraint during their daily lives. The SenseSupport system, a novel just-in-time, adaptive intervention (JITAI) system that uses continuous glucose monitoring to detect periods of dietary restraint, may improve CBT to reduce dietary restraint during treatment by providing real-time interventions.

OBJECTIVE

This study aimed to describe the feasibility, acceptability, and initial evaluation of SenseSupport. We presented feasibility, acceptability, target engagement, and initial treatment outcome data from a small trial using an ABAB (A=continuous glucose monitoring data sharing and JITAIs-Off, B=continuous glucose monitoring data sharing and JITAIs-On) design (in which JITAIs were turned on for 2 weeks and then turned off for 2 weeks throughout the treatment).

METHODS

Participants (N=30) were individuals with BED or BN engaging in ≥3 episodes of ≥5 hours without eating per week at baseline. Participants received 12 sessions of CBT and wore continuous glucose monitors to detect eating behaviors and inform the delivery of JITAIs. Participants completed 4 assessments and reported eating disorder behaviors, dietary restraint, and barriers to app use weekly throughout treatment.

RESULTS

Retention was high (25/30, 83% after treatment). However, the rates of continuous glucose monitoring data collection were low (67.4% of expected glucose data were collected), and therapists and participants reported frequent app-related issues. Participants reported that the SenseSupport system was comfortable, minimally disruptive, and easy to use. The only form of dietary restraint that decreased significantly more rapidly during JITAIs-On periods relative to JITAIs-Off periods was the desire for an empty stomach (t₄₃=1.69; P=.049; Cohen d=0.25). There was also a trend toward greater decrease in overall restraint during JITAs-On periods compared with JITAIs-Off periods, but these results were not statistically significant (t₄₃=1.60; P=.06; Cohen d=0.24). There was no significant difference in change in the frequency of binge eating during JITAIs-On periods compared with JITAIs-Off periods (P=.23). Participants demonstrated clinically significant, large decreases in binge eating (t₂₄=10.36; P<.001; Cohen d=2.07), compensatory behaviors (t₂₄=3.40; P=.001; Cohen d=0.68), and global eating pathology (t₂₄=6.25; P<.001; Cohen d=1.25) from pre- to posttreatment.

CONCLUSIONS

This study describes the successful development and implementation of the first intervention system combining passive continuous glucose monitors and JITAIs to augment CBT for binge-spectrum eating disorders. Despite the lower-than-anticipated collection of glucose data, the high acceptability and promising treatment outcomes suggest that the SenseSupport system warrants additional investigation via future, fully powered clinical trials.

TRIAL REGISTRATION

ClinicalTrials.gov NCT04126694; https://clinicaltrials.gov/ct2/show/NCT04126694.

From Deficits in Emotional Intelligence to Eating Disorder Symptoms: A Sequential Path Analysis Approach Through Self-Esteem and Anxiety

Past studies have reported emotional intelligence (EI) as a relevant factor in development and maintenance of eating disorders (ED), as well as in increasing self-esteem and reducing anxiety. Similarly, research has showed that anxiety and self-esteem are positively and negatively associated to ED criteria, respectively. However, no prior studies have yet tested the multiple intervening roles of both self-esteem and anxiety as potential mediators of the association between EI and ED symptomatology. The present study aims to bridge these gaps by testing a sequential path model. Specifically, we examine the potential sequential mediation effects of self-esteem-anxiety on the link between EI and ED. A sample composed of 516 Spanish undergraduate students and community adults completed measures of EI, self-esteem, anxiety, and ED symptomatology. The results show that high levels of EI were positively associated with self-esteem and negatively associated with anxiety and ED symptoms. Anxiety was positively associated to ED symptoms, while self-esteem levels were negatively linked to ED symptoms. Moreover, path analyses showed that self-esteem and anxiety fully mediated the relationship between EI and ED symptoms in sequence. These findings suggest that EI plays a key role in reducing symptomatology of ED through increased self-esteem and reduced anxiety symptoms, providing novel evidence regarding psychological mechanisms through which EI contributes to a reduction of ED symptomatology. Implications for assessing and improving these psychological resources in ED preventive programs are discussed.

Meaning in life is associated with the psychopathology of eating disorders: differences depending on the diagnosis

Previous studies indicated that meaning in life was inversely associated with eating behaviors and a negative attitude toward food, body satisfaction, and borderline symptoms. However, research on the association between meaning in life and eating disorder psychopathology is scarce, and there are no studies on the association between meaning in life and the eating disorder psychopathology depending on the diagnosis. The aim of the present study is to verify whether meaning in life is differentially associated with a broad range of psychopathology symptoms commonly observed in people with ED, depending on the diagnosis, in a sample of 240 ED patients. We found that meaning in life was negatively associated with eating behaviors and a negative attitude toward food, body satisfaction, borderline symptoms, and hopelessness in all types of eating disorders, regardless of the specific diagnosis. Moreover, the association with meaning in life was different depending on the type of eating disorders. Specifically in the participants with Anorexia Nervosa Restrictive, meaning in life had a higher percentage of explained variance in the eating disorders psychopathology (between 30% and 65%). Therefore, these results seem to indicate that, although meaning in life is an important variable in all the eating disorders subtypes, it is especially relevant in participants with the Anorexia Nervosa Restrictive subtype.

Treatment outcome research of enhanced cognitive behaviour therapy for eating disorders: a systematic review with narrative and meta-analytic synthesis

Enhanced cognitive behaviour therapy (CBT-E) has recently generated interest as a potentially useful treatment for eating disorders (ED). In the current study, we conducted a systematic review of the outcome literature on CBT-E, with both narrative and meta-analytic synthesis. We included single-group uncontrolled pre-post design studies and randomised control trials (RCTs) of CBT-E, which allowed us to include a larger number of studies, and also compare the two methodologies in terms of effect size. The primary analysis included 15 CBT-E studies with a total of 948 participants. Narrative synthesis examined bingeing and purging episodes, BMI change, and follow-up results. A large, statistically significant effect supported CBT-E as a treatment for all EDs (g = 1.06). When comparing methodologies, both pre-post design studies (g = 1.26) and RCTs (g = 0.82) yielded large effects. Narrative synthesis outlined reductions in ED behaviours and increases in BMI which were maintained at follow-up. Limitations include that further RCTs of CBT-E are needed to establish clinical effectiveness of this treatment approach for all EDs; however, results from narrative exploration indicate this endeavour would be worthwhile. Despite the limitations, this study provides additional support for CBT-E as a successful treatment across the range of EDs.

Therapists' self-reported drift from dialectical behavior therapy techniques for eating disorders

OBJECTIVE

Research has shown that clinicians underuse or omit techniques that constitute an essential part of evidence-based therapies. However, it is not known whether this is the case in DBT for eating disorders. The aims of this study were; 1) exploring the extent to which DBT techniques were used by self-identified DBT clinicians treating eating disorders; 2) determining whether therapists fell into distinct groups, based on their usage of DBT techniques; and 3) examining whether clinician characteristics were related to the use of such techniques.

METHOD

Seventy-three clinicians offering DBT for eating disorders completed an online survey about their use of specific DBT techniques. They also completed measures of personality and intolerance of uncertainty.

RESULTS

In relation to the first aim, the pattern of use of DBT techniques showed a bimodal distribution - most were used either a lot or a little. Considering the second aim, clinicians fell into two groups according to the techniques that they delivered - one characterized by a higher use of DBT techniques and the other by a higher use of techniques that were specific to the treatment of eating disorders, rather than DBT methods. Finally, more experienced clinicians were more likely to be in the 'DBT technique-focused' group.

DISCUSSION

DBT clinicians are encouraged to implement both sets of techniques (DBT techniques and standard techniques for the treatment of eating disorders) in an integrated way. Training, supervision and the use of manuals are recommended to decrease therapist drift in DBT.

Reactivity to 35% carbon dioxide in bulimia nervosa and panic disorder

The inhalation of 35% carbon dioxide (CO₂) induces panic and anxiety in people with panic disorder (PD) and in people with various other psychiatric disorders. The anxiogenic effect of CO₂ in people with eating disorders has received sparse attention despite the fact that PD and bulimia nervosa (BN) have several common psychological and neurobiological features. This study compared CO₂-reactivity across three groups of participants: females with BN, females with PD, and female controls without known risk factors for enhanced CO₂-reactivity (e.g., social anxiety disorder, first degree relatives with PD). Reactivity was measured by self-reported ratings of panic symptomatology and subjective anxiety, analyzed as both continuous variables (change from room-air to CO₂) and dichotomous variables (positive versus negative responses to CO₂). Analyses of each outcome measure demonstrated that CO₂-reactivity was similar across the BN and PD groups, and reactivity within each of these two groups was significantly stronger than that in the control group. This is the first study to demonstrate CO₂-hyperreactivity in individuals with BN, supporting the hypothesis that reactivity to this biological paradigm is not specific to PD. Further research would benefit from examining transdiagnostic mechanisms in CO₂-hyperreactivity, such as anxiety sensitivity, which may account for this study's results.

Dysfunctional metacognition and drive for thinness in typical and atypical anorexia nervosa

BACKGROUND

Anorexia nervosa is complex and difficult to treat. In cognitive therapies the focus has been on cognitive content rather than process. Process-oriented therapies may modify the higher level cognitive processes of metacognition, reported as dysfunctional in adult anorexia nervosa. Their association with clinical features of anorexia nervosa, however, is unclear. With reclassification of anorexia nervosa by DSM-5 into typical and atypical groups, comparability of metacognition and drive for thinness across groups and relationships within groups is also unclear. Main objectives were to determine whether metacognitive factors differ across typical and atypical anorexia nervosa and a non-clinical community sample, and to explore a process model by determining whether drive for thinness is concurrently predicted by metacognitive factors.

METHODS

Women receiving treatment for anorexia nervosa (n = 119) and non-clinical community participants (n = 100), aged between 18 and 46 years, completed the Eating Disorders Inventory (3(rd) Edition) and Metacognitions Questionnaire (Brief Version). Body Mass Index (BMI) of 18.5 kg/m(2) differentiated between typical (n = 75) and atypical (n = 44) anorexia nervosa. Multivariate analyses of variance and regression analyses were conducted.

RESULTS

Metacognitive profiles were similar in both typical and atypical anorexia nervosa and confirmed as more dysfunctional than in the non-clinical group. Drive for thinness was concurrently predicted in the typical patients by the metacognitive factors, positive beliefs about worry, and need to control thoughts; in the atypical patients by negative beliefs about worry and, inversely, by cognitive self-consciousness, and in the non-clinical group by cognitive self-consciousness.

CONCLUSIONS

Despite having a healthier weight, the atypical group was as severely affected by dysfunctional metacognitions and drive for thinness as the typical group. Because metacognition concurrently predicted drive for thinness in both groups, a role for process-oriented therapy in adults is suggested. Implications are discussed.

A risk and maintenance model for bulimia nervosa: From impulsive action to compulsive behavior

This article offers a new model for bulimia nervosa (BN) that explains both the initial impulsive nature of binge eating and purging, as well as the compulsive quality of the fully developed disorder. The model is based on a review of advances in research on BN and advances in relevant basic psychological science. It integrates transdiagnostic personality risk, eating-disorder-specific risk, reinforcement theory, cognitive neuroscience, and theory drawn from the drug addiction literature. We identify both a state-based and a trait-based risk pathway, and we then propose possible state-by-trait interaction risk processes. The state-based pathway emphasizes depletion of self-control. The trait-based pathway emphasizes transactions between the trait of negative urgency (the tendency to act rashly when distressed) and high-risk psychosocial learning. We then describe a process by which initially impulsive BN behaviors become compulsive over time, and we consider the clinical implications of our model. (PsycINFO Database Record

Perceptions of the feasibility and acceptability of a smartphone application for the treatment of binge eating disorders: Qualitative feedback from a user population and clinicians

BACKGROUND

Binge eating, a major public health problem, is characterized by recurrent episodes of out-of-control eating in which an individual consumes an unusually large amount of food in a discrete time period. Limitations of existing treatments for binge eating (both in-person psychotherapy and guided self-help) indicate that smartphone applications (apps) may be an ideal alternative or enhancement. An app for binge eating could aid treatment dissemination, engagement, and/or compliance. However, no research to date has examined user perceptions of a therapeutic app for binge eating, which is critical for development.

OBJECTIVES

The purposes of the current study were to conceptualize a potential app for binge eating and obtain feedback regarding feasibility and acceptability from target users (i.e., individuals with binge eating) and clinicians specializing in the treatment of binge eating.

METHODS

Our team conceptualized a smartphone app that contained self-help material, functions to monitor behavior, and provisions of in-the-moment interventions. We presented this app (e.g., feature explanations, mock screen shots) through phone interviews with clinicians who specialize in the treatment of binge eating (n=10), and focus groups with individuals experiencing binge eating (n=11). Participants were asked to discuss customization, user burden, terminology, attrition, data visualization, comprehensiveness, reminders, feasibility, acceptability, and perceived effectiveness of the proposed app. Thematic analyses were conducted from qualitative data (e.g., audio recordings and interview notes) obtained via the focus groups and interviews.

RESULTS

Results indicated that our proposed app would be highly feasible and acceptable to users and clinicians, though concerns about the degree of personalization and customizability were noted.

CONCLUSIONS

The current study details highly specific feedback and ideas regarding essential app features from target users and clinicians. This information is critical for the development of future apps to treat binge eating. Ways in which data obtained from the current study may be generalized to the development of therapeutic apps for other psychological disorders is discussed.

Psychiatric co-morbidity in women presenting across the continuum of disordered eating

OBJECTIVE

To compare the prevalence and correlates of psychiatric co-morbidity across a large sample of college women without an eating disorder, those at high risk for an eating disorder and women diagnosed using DSM-5 criteria for an eating disorder.

PARTICIPANTS

549 college women aged 18-25.

METHODS

Data from the Eating Disorder Examination, the Structured Clinical Interview for DSM-IV Axis I disorders and self-report questionnaires were analyzed using logistic regression for categorical data and ANCOVA for continuous measures.

RESULTS

Eating disordered symptomatology was strongly associated with anxiety disorders, mood disorders and insomnia. These co-morbidities (type and severity) tend to increase with eating disorder symptom severity.

CONCLUSIONS

Prevention and treatment programs for eating disorders need to address the high levels of mood, anxiety and sleep problems in this population. The findings on insomnia are novel and suggest that sleep disturbance may play an integral role in eating-related difficulties.

A randomized controlled comparison of integrative cognitive-affective therapy (ICAT) and enhanced cognitive-behavioral therapy (CBT-E) for bulimia nervosa

BACKGROUND

The purpose of this investigation was to compare a new psychotherapy for bulimia nervosa (BN), integrative cognitive-affective therapy (ICAT), with an established treatment, 'enhanced' cognitive-behavioral therapy (CBT-E).

METHOD

Eighty adults with symptoms of BN were randomized to ICAT or CBT-E for 21 sessions over 19 weeks. Bulimic symptoms, measured by the Eating Disorder Examination (EDE), were assessed at baseline, at the end of treatment (EOT) and at the 4-month follow-up. Treatment outcome, measured by binge eating frequency, purging frequency, global eating disorder severity, emotion regulation, self-oriented cognition, depression, anxiety and self-esteem, was determined using generalized estimating equations (GEEs), logistic regression and a general linear model (intent-to-treat).

RESULTS

Both treatments were associated with significant improvement in bulimic symptoms and in all measures of outcome, and no statistically significant differences were observed between the two conditions at EOT or follow-up. Intent-to-treat abstinence rates for ICAT (37.5% at EOT, 32.5% at follow-up) and CBT-E (22.5% at both EOT and follow-up) were not significantly different.

CONCLUSIONS

ICAT was associated with significant improvements in bulimic and associated symptoms that did not differ from those obtained with CBT-E. This initial randomized controlled trial of a new individual psychotherapy for BN suggests that targeting emotion and self-oriented cognition in the context of nutritional rehabilitation may be efficacious and worthy of further study.

An intensive DBT program for patients with multidiagnostic eating disorder presentations: a case series analysis

OBJECTIVE

This study presents case-series data on a novel outpatient program that blends dialectical behavior therapy (DBT) with standard eating disorder (ED) interventions (i.e., food exposure, weight monitoring, cognitive modification, ED psychoeducation) for patients with complex and multidiagnostic ED presentations.

METHOD

Quantitative and qualitative data was collected on a sample of seven consecutively admitted women who presented with a severe ED, a history of several failed treatment attempts, pervasive emotion dysregulation, and significant Axis I or II psychiatric comorbidity (e.g., PTSD, borderline personality disorder).

RESULTS

Treatment was associated with reductions in ED symptoms, suicidal and self-injurious behaviors, treatment interfering behaviors, psychiatric and medical hospitalizations, and clinician burnout.

DISCUSSION

Overall, the results suggest that this blended DBT/cognitive behavior therapy for ED treatment model is a promising intervention for this complex and "hard to treat" population.

Acceptance and commitment therapy as a novel treatment for eating disorders: an initial test of efficacy and mediation

Eating disorders are among the most challenging disorders to treat, with even state-of-the-art cognitive-behavioral treatments achieving only modest success. One possible reason for the high rate of treatment failure for eating disorders is that existing treatments do not attend sufficiently to critical aspects of the disorder such as high experiential avoidance, poor experiential awareness, and lack of motivation. These variables are explicit targets of Acceptance and Commitment Therapy (ACT). The current study examined the efficacy of an ACT-based group treatment for eating disorders by examining whether the addition of ACT groups to treatment-as-usual (TAU) at a residential treatment facility for eating disorders would improve treatment outcomes. TAU patients received an intensive residential treatment, while ACT patients received these services but additionally attended, depending on diagnosis, either ACT for anorexia nervosa groups or ACT for bulimia nervosa groups. Although individuals in both treatment conditions demonstrated large decreases in eating pathology, there were trends toward larger decreases among those receiving ACT. ACT patients also showed lower rates of rehospitalization during the 6 months after discharge. Overall, results suggest that ACT is a viable treatment option for individuals with eating pathology and further outcome research is warranted.

Integrative Response Therapy for Binge Eating Disorder

Binge Eating Disorder (BED), a chronic condition characterized by eating disorder psychopathology and physical and social disability, represents a significant public health problem. Guided Self Help (GSH) treatments for BED appear promising and may be more readily disseminable to mental health care providers, accessible to patients, and cost-effective than existing, efficacious BED specialty treatments which are limited in public health utility and impact given their time and expense demands. No existing BED GSH treatment has incorporated affect regulation models of binge eating, which appears warranted given research linking negative affect and binge eating. Integrative Response Therapy (IRT), a new group-based guided self-help treatment, based on the affect regulation model of binge eating, that has shown initial promise in a pilot sample of adults meeting DSM IV criteria for BED, is described. Fifty-four% and 67% of participants were abstinent at post-treatment and three month follow-up respectively. There was a significant reduction in the number of binge days over the previous 28 days from baseline to post-treatment [14.44 (±7.16) to 3.15 (±5.70); t=7.71, p<.001; d=2.2] and from baseline to follow-up [14.44 (±7.16) to 1.50 (±2.88); t=5.64, p<.001; d=1.7]. All subscales from both the Eating Disorder Examination - Questionnaire and Emotional Eating Scale were significantly lower at post-treatment compared to baseline. 100% of IRT participants would recommend the program to a friend or family member in need. IRT's longer-term efficacy and acceptability are presently being tested in a National Institute of Mental Health funded randomized controlled trial.

Eating disorders in adolescents: review of treatment studies that include psychodynamically informed therapy

In clinical practice, psychodynamic approaches represent an important component of the treatment for young people with eating disorders (EDs), even though the research literature remains modest regarding the most effective treatment for children, adolescents, or adults with an ED. Although there are very few clinical research studies of individual or family psychodynamic treatments of EDs, there is some evidence for efficacy from clinical trials. This article reviews studies of psychodynamically informed therapies for the treatment of EDs and discusses how the findings, although limited, suggest that further research into psychodynamic treatments of EDs in youth is warranted.

LIBER8 design and methods: an integrative intervention for loss of control eating among African American and White adolescent girls

Loss of control (LOC) eating affects a significant number of adolescents of all racial and ethnic backgrounds and is associated with numerous psychosocial problems, including depression, anxiety, low self-esteem, body dissatisfaction, and weight concerns. However, empirically validated, culturally sensitive treatments for adolescents with these disordered eating behaviors are not available. This pilot project involved designing a developmentally and culturally appropriate treatment for LOC eating for adolescent girls. We intend to conduct multiple focus groups with adolescent girls who engage in LOC eating, and their primary caregivers. Data from these groups will inform the subsequent creation of a manualized treatment protocol. We will then evaluate the efficacy of this intervention (LIBER8-Linking Individuals Being Emotionally Real) to reduce LOC eating. This intervention will integrate components of dialectical behavior therapy, such as mindfulness and distress tolerance skills training, and cognitive-behavioral therapy. We will also integrate text-messaging, a key adolescent communication strategy, as a means of self-monitoring. Participants meeting study criteria will be offered participation in this 12-week randomized controlled trial comparing LIBER8 to a weight management control condition (2BFit). We hypothesize that this intervention will serve to reduce LOC eating, as well as improve psychosocial functioning as evidenced by decreased depression, anxiety, eating disorder cognitions, emotional eating, impulsivity, and improved quality of life. The feasibility and acceptability of this intervention will be extensively evaluated with the explicit intent of informing a subsequent larger randomized controlled trial.

The direct effects of manipulating body checking in men

The purpose of the current study was to examine how body checking affects men's state body image and state muscle dissatisfaction using an experimental design. Male undergraduates (N=234) were randomly assigned to a high body checking group, in which they were asked to focus their attention on typically disliked body parts, and a low body checking group, in which they were asked to focus on their bodies as a whole and describe themselves using neutral, nonjudgmental terms. Contrary to initial hypotheses, regardless of condition, participants' body image satisfaction decreased significantly following the body checking procedure and did not change significantly after a 10-min delay. Additionally, in both conditions, participants' muscle dissatisfaction did not immediately change, but muscle dissatisfaction increased significantly following the 10-min delay. One mirror exposure session had similar effects on men's body image and muscle dissatisfaction regardless of how they were asked to examine their bodies.

Longitudinal stability of binge-eating type in eating disorders

OBJECTIVE

The purpose of this study was to examine the 2-year longitudinal stability of objective bulimic (binge eating) episodes (OBEs) and subjective bulimic (binge eating) episodes (SBEs) in a multisite eating disorders sample.

METHOD

Participants included 288 females with eating disorder symptoms who were assessed every 6 months using the Eating Disorder Examination.

RESULTS

Markov modeling revealed considerable longitudinal variability between types of binge eating over 6-month time intervals with relatively higher probability estimates for consistency between OBEs and SBEs than specific transitions between types for the overall sample as well as for eating disorder diagnostic groups. Transition patterns examining all five time points indicated notable variability in binge-eating patterns among participants.

DISCUSSION

These findings suggest that although longitudinal patterns of binge types are variable among individuals with eating disorders, consistency in OBEs and SBEs was the most common pattern observed.

[Eating disorders: Considerations on nosology, etiology and treatment in the XXI century]

Amazing advances have been made in medical sciences since the first international conference on eating disorders (ED) was held in the 1970s, and there have been remarkable changes in the field of ED itself. Back then, virtually all that was talked about was anorexia nervosa; clinicians and researchers were mainly concerned about the possible hypothalamic and endocrine factors that seemed to be involved and there had been no epidemiological studies or controlled trials with psychiatric drugs or psychotherapy. Although the picture today is quite different, there are still significant gaps which even affect the classification of these disorders, as well as their neurobiological bases and both the pharmacological and psychological treatments which should be used. This paper gives a brief summary of these gaps and discusses the need to find endophenotypes which may help in categorising and directing research into these disorders. Mention is made of possible contributions from other fields for the benefit of greater progress in understanding eating disorders. Specific reference is made to the addictive model, out of which neuropsychology and animal models may provide data transferable to our area of expertise. Lastly, the current state of ED treatment is discussed with pointers as to from what perspective it would be most useful to seek improvements.

Figured World of Eating Disorders: Occupations of Illness

Background. The biomedical diagnosis of eating disorders signifies a mental illness with complex physical symptomology. The socio-cultural determinants and impact of eating disorders on daily occupations are not adequately addressed in this classification.

Purpose. This paper introduces the concept of a figured world as a framework for how eating disorders exist in daily activity and social discourse. How occupations become ascribed with meaning generated by an eating disorder will be proposed through the voice of a composite character in the figured world.

Key Issues. Central elements to contextualizing figured worlds include positional identity, self-authoring, and semiotic mediation. The generation of meaning in illness arises from the integration of these elements into this specific figured world.

Implications. The competing agendas of the biomedical model and figured world permit a new understanding of the challenges associated with recovery. For occupational therapists, these challenges require the reattribution of meaning of daily occupations.

Online cognitive-behavioural treatment of bulimic symptoms: a randomized controlled trial

BACKGROUND

Manualized cognitive-behavioural treatment (CBT) is underutilized in the treatment of bulimic symptoms. Internet-delivered treatment may reduce current barriers.

OBJECTIVE

This study aimed to assess the efficacy of a new online CBT of bulimic symptoms.

METHOD

Participants with bulimic symptoms (n = 105) were randomly allocated to online CBT, bibliotherapy or waiting list/delayed treatment condition. Data were gathered at pre-treatment, post-treatment and 1-year follow-up.

OUTCOME MEASURES

The primary outcome measures were the Eating Disorder Examination Questionnaire (EDE-Q) and the frequency of binge eating and purging episodes. The secondary outcome measure was the Body Attitude Test.

RESULTS

Dropout from Internet treatment was 26%. Intention-to-treat ANCOVAs of post-test data revealed that the EDE-Q scores and the frequency of binging and purging reduced more in the online CBT group compared with the bibliotherapy and waiting list groups (pooled between-group effect size: d = 0.9). At 1-year follow-up, improvements in the online CBT group had sustained.

CONCLUSION

This study identifies online CBT as a viable alternative in the treatment of bulimic symptoms.

Empirical classification of eating disorders

Current diagnostic criteria for anorexia nervosa (AN) and bulimia nervosa (BN) account for a minority of individuals with clinically significant disorders of eating, raising concerns about the clinical utility of current definitions. This review examines evidence for the validity of current and alternative approaches to defining eating disorders and implications for draft criteria for the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5). Although this review largely supports the predictive validity of distinctions among AN, BN, and the newly proposed binge eating disorder (BED), it also highlights that our tendency to "study what we define" has created a gap between the problems that people have and what we know about those problems. Future research on the causes and consequences of eating disorders should include more heterogeneous groups to enable identification of meaningful boundaries that distinguish between disorders based on etiological and predictive validity.

Cognitive-behavioral therapy for subthreshold bulimia nervosa: A case series

The extent to which cognitive-behavioral therapy (CBT) is helpful in treating individuals with bulimic symptoms who do not meet full criteria for bulimia nervosa is unclear. The purpose of this investigation was to examine the potential efficacy of CBT for eating disorder individuals with bulimic symptoms who do not meet full criteria for bulimia nervosa. Twelve participants with subthreshold bulimia nervosa were treated in a case series with 20 sessions of CBT. Ten of the 12 participants (83.3%) completed treatment. Intent-to-treat abstinent percentages were 75.0% for objectively large episodes of binge eating (OBEs), 33.3% for subjectively large episodes of binge eating (SBEs), and 50% for purging at end of treatment. At one year follow-up, 66.7% were abstinent for OBEs, 41.7% for SBEs, and 50.0% for purging. The majority also reported improvements in associated symptoms. This case series provides support for the use of CBT with individuals with subthreshold bulimia nervosa.

Binge eating disorder and the outcome of bariatric surgery at one year: a prospective, observational study

Previous studies have suggested that binge eating disorder (BED) impairs weight loss following bariatric surgery, leading some investigators to recommend that patients receive behavioral treatment for this condition before surgery. However, many of these investigations had significant methodological limitations. The present observational study used a modified intention-to-treat (ITT) population to compare 1-year changes in weight in 59 surgically treated participants, determined preoperatively to be free of a current eating disorder, with changes in 36 individuals judged to have BED. Changes in weight and binge eating in the latter group were compared with those in 49 obese individuals with BED who sought lifestyle modification for weight loss. BED was assessed using criteria proposed for the Diagnostic and Statistical Manual (DSM) 5. At 1 year, surgically treated participants without BED lost 24.2% of initial weight, compared with 22.1% for those with BED (P > 0.309). Both groups achieved clinically significant improvements in several cardiovascular disease (CVD) risk factors. Participants with BED who received lifestyle modification lost 10.3% at 1 year, significantly (P < 0.001) less than surgically treated BED participants. The mean number of binge eating days (in the prior 28 days) fell sharply in both BED groups at 1 year. These two groups did not differ significantly in BED remission rates or in improvements in CVD risk factors. The present results, obtained in carefully studied participants, indicate that the preoperative presence of BED does not attenuate weight loss or improvements in CVD risk factors at 1 year in surgically treated patients. Longer follow-up of participants is required.

The STRATOB study: design of a randomized controlled clinical trial of Cognitive Behavioral Therapy and Brief Strategic Therapy with telecare in patients with obesity and binge-eating disorder referred to residential nutritional rehabilitation

BACKGROUND

Overweight and obesity are linked with binge eating disorder (BED). Effective interventions to significantly reduce weight, maintain weight loss and manage associated pathologies like BED are typically combined treatment options (dietetic, nutritional, physical, behavioral, cognitive-behavioral, pharmacological, surgical). Significant difficulties with regard to availability, costs, treatment adherence and long-term efficacy are present. Particularly Cognitive Behavioral Therapy (CBT) is the therapeutic approach indicated both in in-patient and in out-patient settings for BED. In recent years systemic and systemic-strategic psychotherapies have been implemented to treat patients with obesity and BED involved in familiar problems. Particularly a brief protocol for the systemic-strategic treatment of BED, using overall the strategic dialogue, has been recently developed. Moreover telemedicine, a new promising low cost method, has been used for obesity with BED in out-patient settings in order to avoid relapse after the in-patient step of treatment and to keep on a continuity of care with the involvement of the same clinical in-patient team.

METHODS

The comparison between CBT and Brief Strategic Therapy (BST) will be assessed in a two-arm randomized controlled clinical trial. Due to the novelty of the application of BST in BED treatment (no other RCTs including BST have been carried out), a pilot study will be carried out before conducting a large scale randomized controlled clinical trial (RCT). Both CBT and BST group will follow an in-hospital treatment (diet, physical activity, dietitian counseling, 8 psychological sessions) plus 8 out-patient telephone-based sessions of psychological support and monitoring with the same in-patient psychotherapists. Primary outcome measure of the randomized trial will be the change in the Global Index of the Outcome Questionnaire (OQ-45.2). Secondary outcome measures will be the percentage of BED patients remitted considering the number of weekly binge episodes and the weight loss. Data will be collected at baseline, at discharge from the hospital (c.a. 1 month after) and after 6-12-24 months from the end of the in-hospital treatment. Data at follow-up time points will be collected through tele-sessions.

DISCUSSION

The STRATOB (Systemic and STRATegic psychotherapy for OBesity), a comprehensive two-phase stepped down program enhanced by telepsychology for the medium-term treatment of obese people with BED seeking intervention for weight loss, will shed light about the comparison of the effectiveness of the BST with the gold standard CBT and about the continuity of care at home using a low-level of telecare (mobile phones).

TRIAL REGISTRATION

ClinicalTrials.gov Identifier: NCT01096251

Cognitive-behavioral therapy for weight management and eating disorders in children and adolescents

Eating disorders and obesity in children and adolescents involve harmful behavior and attitude patterns that infiltrate daily functioning. Cognitive-behavioral therapy (CBT) is well suited to treating these conditions, given the emphasis on breaking negative behavior cycles. This article reviews the current empirically supported treatments and the considerations for youth with weight control issues. New therapeutic modalities (ie, enhanced CBT and the socioecologic model) are discussed. Rationale is provided for extending therapy beyond the individual treatment milieu to include the family, peer network, and community domains to promote behavior change, minimize relapse, and support healthy long-term behavior maintenance.

Brief Strategic Therapy vs Cognitive Behavioral Therapy for the Inpatient and Telephone-Based Outpatient Treatment of Binge Eating Disorder: The STRATOB Randomized Controlled Clinical Trial

This paper describes the results of the STRATOB (Systemic and STRATegic psychotherapy for OBesity) study, a two-arm randomized controlled clinical trial (RCT) comparing Brief Strategic Therapy (BST, Nardone or Arezzo model) with the gold standard CBT (Cognitive Behavioral Therapy) for the inpatient and telephone-based outpatient treatment of obese people with Binge Eating Disorder (BED) seeking treatment for weight reduction. Primary outcome measure of the randomized trial was change in the Global Index of the Outcome Questionnaire (OQ 45.2). Secondary outcome measures were BED remission (weekly binge episodes < 2) and weight loss. Data were collected at baseline, at discharge from the hospital (c.a. 1 month after) and after 6 months from discharge.. No significant difference between groups (BST vs CBT) was found in the primary outcome at discharge. However, a greater improvement was seen in the BST vs the CBT group (P<.01) in the primary outcome at 6 months. About secondary outcomes, no significant difference between groups were found in weight change both at discharge and at 6 months. Notably, a significant association emerged between treatment groups and BED remission at 6 months in favor of BST (only 20% of patients in BST group reported a number of weekly binge episodes > 2 vs 63.3% in CBT group).

Acceptance and commitment therapy versus cognitive therapy for the treatment of comorbid eating pathology

Previous research has indicated that although eating pathology is prevalent in college populations, both CBT and non-CBT-based therapies achieve only limited effectiveness. The current study examined several questions related to the treatment of eating pathology within the context of a larger randomized controlled trial that compared standard CBT (i.e., Beck's cognitive therapy; CT) with acceptance and commitment therapy (ACT; Hayes, 2004).The results indicated that the two treatments were differentially effective at reducing eating pathology. Specifically, CT produced modest decreases in eating pathology whereas ACT produced large decreases. In addition, a weaker suggestion emerged that ACT was more effective than CT at increasing clinician-rated global functioning among those with eating pathology. These findings suggest that ACT is a useful treatment for disordered eating and potentially, for eating disorders per se.

Longitudinal study of the diagnosis of components of the metabolic syndrome in individuals with binge-eating disorder

BACKGROUND

Binge-eating disorder may represent a risk factor for the metabolic syndrome.

OBJECTIVE

The objective was to assess longitudinally the relation between binge-eating disorder and components of the metabolic syndrome.

DESIGN

At 2.5 and 5 y of follow-up, 134 individuals with binge-eating disorder and 134 individuals with no history of eating disorders, who were frequency-matched for age, sex, and baseline body mass index (BMI), were interviewed during the follow-up interval regarding new diagnoses of 3 metabolic syndrome components: hypertension, dyslipidemia, and type 2 diabetes.

RESULTS

A comparison of individuals with and without a binge-eating disorder in analyses adjusted for age, sex, baseline BMI, and interval BMI change had hazard ratios (95% CIs) for reporting new diagnoses of metabolic syndrome components of 2.2 (1.2, 4.2; P = 0.023) for dyslipidemia, 1.5 (0.76, 2.9; P = 0.33) for hypertension, 1.6 (0.77, 3.9; P = 0.29) for type 2 diabetes, 1.7 (1.1, 2.6; P = 0.023) for any component, and 2.4 (1.1, 5.7; P = 0.038) for > or =2 components.

CONCLUSION

Binge-eating disorder may confer a risk of components of the metabolic syndrome over and above the risk attributable to obesity alone. This trial was registered at www.clinicaltrials.gov as NCT00777634.

An eating disorder-specific model of interpersonal psychotherapy (IPT-ED): causal pathways and treatment implications

Several studies support the efficacy of interpersonal psychotherapy (IPT) in the treatment of eating disorders. Treatment outcomes are likely to be augmented through a greater understanding, and hence treatment targeting, of the mechanisms whereby IPT induces therapeutic gains. To this end, the present paper seeks to develop a theoretical model of IPT in the context of eating disorders (IPT-ED). After providing a brief description of IPT, the IPT-ED model is presented and research supporting its theorized mechanisms is summarized. This model proposes that negative social evaluation plays a pivotal role as both a cause (via its detrimental impact on self evaluation and associated affect) and consequence of eating disorder symptoms. In the final section, key eating disorder constructs (namely, the developmental period of adolescence, clinical perfectionism, cognitive dysfunction, and affect regulation) are re-interpreted from the standpoint of negative social evaluation thereby further explicating IPT's efficacy as an intervention for individuals with an eating disorder.

Psychotherapy approaches for adolescents with eating disorders

PURPOSE OF REVIEW

Adolescence is the most common period for the onset of eating disorders, and early intervention is critical. Primary care providers should feel equipped to discuss psychotherapy approaches for eating disorders with adolescents and their families and to provide appropriate referrals. The present review focuses on six prominent treatment modalities and the evidence supporting each approach.

RECENT FINDINGS

Although the majority of studies about psychotherapy approaches for eating disorders focus on adult women, there is a growing body of research on effective treatments for an adolescent population. Family-based treatment (the 'Maudsley method') and supportive psychotherapy appear to be promising approaches for anorexia in teens. Treatments for bulimia yield extremely high relapse rates, but cognitive-behavioral therapy and family-based treatment are favored modalities. Dialectical behavior therapy and interpersonal psychotherapy may also be applicable to adolescent bulimia and binge eating. Most psychotherapists draw upon a variety of these treatment approaches, depending upon the patient's unique presentation. Regardless of the modality used, some degree of family involvement is important in limiting dropout and improving outcomes.

SUMMARY

Adolescent health providers need to be aware of the psychotherapy approaches recommended for teens with eating disorders in order to effectively refer patients to and collaborate with mental health providers.

Eating behaviour and eating disorders in students of nutrition sciences

OBJECTIVE

Sometimes the suspicion is put forward that nutrition students show more disordered eating patterns, which may be among the motivating factors to study nutrition. At the same time, it is not clear whether the students' increasing knowledge about diet and nutrition is associated with a more healthy eating behaviour or with an unhealthy obsession with food choices.

DESIGN

Cross-sectional comparison of nutrition students from German universities during the first year of their studies (n 123) and during higher semesters (n 96), with a control group from other study programmes (n 68 and n 46, respectively). Dietary restraint, disinhibition, the tendency towards orthorexia nervosa and healthy food choices were assessed using a questionnaire.

RESULTS

Nutrition students showed higher levels of dietary restraint than the control group. Disinhibition and orthorexia nervosa did not differ between nutrition students and controls. Orthorexic tendencies were lower in the more advanced nutrition students. Healthy food choices did not differ among students in the first year. More advanced nutrition students showed healthier food choices, whereas the corresponding controls showed slightly more unhealthy food choices.

CONCLUSIONS

Nutrition students, more than other students, tend to restrict their food intake in order to control their weight, but they do not have more disturbed or disordered eating patterns than other students. Moreover, during the course of their studies, they adopt slightly more healthy food choices and decrease their tendency to be obsessive in their eating behaviour.

Rethinking recovery from eating disorders: spiritual and political dimensions

In this article, we portray women's experiences of long-term recovery from anorexia and compulsive overeating. Semistructured interviewing and an interpretive biographical method were used to coconstruct accounts of each participant's transition to wellness. Thick descriptions of self-identified turning points on the path to recovery are framed in terms of the concept of personal positioning in relation to cultural master narratives. The narratives suggest that long-term recovery involves spiritual or political commitment and purposeful engagement with communities larger than the self.

Implicit family process rules in eating-disordered and non-eating-disordered families

Family environment has been shown to be one of the factors related to the presence of eating disorders among young-adult females. Clinical experience and theories about eating disorders postulate that implicit family rules are an intricate part of family process that may have a great effect on the creation and maintenance of such problems. This study compared implicit family process rules (specifically rules pertaining to kindness; expressiveness and connection; constraining thoughts, feelings, and self; inappropriate caretaking; and monitoring) in families with a young-adult female diagnosed with an eating disorder-either anorexia nervosa, bulimia nervosa, or eating disorder not otherwise specified-and families with a young-adult female without an eating disorder diagnosis. One hundred two families (51 eating disordered and 51 comparison) participated in the study. Mothers, fathers, young-adult female children, and siblings completed the Family Implicit Rules Profile (Harper, Stoll, & Larson, 2007). Results indicated that eating-disordered families are governed by a greater proportion of constraining family rules than are non-eating-disordered families. Additionally, eating-disordered youth reported a lower proportion of facilitative family rules and a higher proportion of constraining family rules than did parents and siblings. Theoretical, research, and clinical implications are discussed.