Pilot Study on the Validity of the Metacognitive Hub Model of Craving in Bulimia Nervosa (BN) and...
Bulimia NervosaBinge-Eating DisorderCraving is defined as an irrepressible urge to consume certain products and represents one of the key factors in severe substance use disorders, as illustrated by its recent inclusion as a diagnostic criterion in the most recent fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM 5). However, the pathophysiological models of craving remain debated. The "metacognitive hub model", a conceptual, experimental and clinical approach to craving, proposes that craving should be considered as the embedded consequence of the interaction between three components (the reflexive, automatic and interoceptive systems), each of which has an implicit and explicit element. This model links the three components by suggesting that metacognitive abilities, the ability to understand one's own cognitive functioning, may be a skill of individuals that allows them to make the three sub-components explicit or not. To date, the conception of eating disorders is increasingly similar to that of addictive disorders. Indeed, there is growing evidence that the symptomatology of bulimia nervosa and binge eating disorder can be considered in part as an "food addiction" and would fit the diagnostic criteria of an addictive disorder. Bulimia nervosa is an eating disorder (DSM 5) characterized by a cycle of binge eating and compensatory behaviors such as self-induced vomiting that tend to negate or compensate for the effects of the binge eating. Binge eating disorder (DSM 5) is characterized by a cycle of binge eating, but without the compensatory behaviors seen in bulimia nervosa. In addition, there are common neurological aspects as well as similar cognitions between these eating disorders and addictive disorders. Given the importance of craving in addictive pathology, it seems essential to address this issue in bulimia nervosa and binge eating disorder. The cognitive difficulties of patients with bulimia nervosa and binge eating disorder, which are close to the difficulties observed in patients with addictive behaviors, suggest that the "metacognitive hub model" could provide a clear and measurable theoretical framework of the different dimensions of craving. The overall objective of this project is to explore the relationship between the level of craving induced by food picture exposure and the level of impairment of the reflexive, automatic, interoceptive, and metacognitive systems in women with bulimia nervosa and binge eating disorder and to compare these impairments according to the nature of the eating disorder (i.e., binge eating versus bulimia nervosa). Our hypotheses are: the induction of food craving will affect the reflexive, automatic, and interoceptive systems of patients with bulimia nervosa and binge eating disorder. the magnitude of the effect of food craving induction on implicit craving and explicit craving will be modulated by the participants' metacognitive abilities.
Weight Loss Treatment for Veterans With Binge Eating
Binge Eating DisorderInclusion Criteria: aged 21 and older, BMI>=25, and presence of recurrent binge eating on the MOVE! Survey. Exclusion Criteria: more than 4 MOVE! sessions in the prior year; active psychosis or suicidal ideation; medical or psychiatric illness, or cognitive deficits that interfere with providing consent or completing assessments, and; pregnancy or lactation. Participants will be recruited from the VA's MOVE! Program at VA Connecticut Healthcare System (both Newington and West Haven campuses). Those participants who meet eligibility and are interested in the study will meet with a research associate who will obtain written consent. A baseline appointment will be made where the participant will complete written assessments, anthropometric measures (weight, height, blood pressure etc.), along with a blood draw. Participants will then be randomized, by luck of a draw, to either MOVE! or MOVE!+clinician-led CBT treatment. For those randomized to the MOVE! condition, participants will continue in the MOVE! program by meeting with the multidisciplinary team in a group setting once a week for 60 minutes, for 16 weeks. The group sessions are lead by a dietician, health psychologist, and physical therapist. For those randomized to the MOVE!+CBT treatments, participants will continue in the MOVE! program as described above, but will also partake in up to 10 individualized sessions over a 3-month period. Participants will be given a treatment manual to read at home, ask to complete daily food logs and work with the study therapist to create goals and complete homework that is geared at examining and changing how participant think about binge eating and how that thinking affects behavior. Lastly, a walking program will also be incorporated into the treatment. For both treatment arms, 3 months from treatment starting, then again at 9 months and 15 months, participants will be asked to complete post and follow up assessments, much like the baseline.
Light Therapy and Binge Eating Disorder Treatment (BED Light Study)
Binge-Eating DisorderBinge Eating Disorder (BED) is the most widespread food behavior disorder, with prevalence three times higher than anorexia. Its pathophysiology remains poorly understood and the investigators have few therapeutic options. Following a review of the literature, the investigators hypothesize that luminotherapy could be an innovative treatment of BED by its favorable effect on triggers of hyperphagic access, circadian disturbances, attention and impulsivity. The study is prospective, interventional, randomized, double-blind, monocentric (HCL). 52 patients with BED will be randomized to an active arm with intensive luminotherapy (1 daily 30 min, 10,000 lux in the morning) versus a placebo arm (<500 lux). Treatment will be delver every day during 30 days. Assessments will take place on D0, D30 and D60. The main objective is to compare the evolution of the number of hyperphagic access before and after treatment between the two groups. Secondary objectives are to compare characteristics of hyperphagic access, bodily concerns, food dependence and impulsivity, mood, anxiety, cognitive and attentional profiles (STROOP, Go / No Go, SST, BART, Prospective Time Estimation Task, Switching Task), liking / wanted for different food categories and carbohydrate metabolism (CRP, glucose, insulinemia, insulin resistance, profile of lipid abnormalities, 25-OH vitamin D3).
Uniting Couples In the Treatment of Eating Disorders (UNITE)
Binge-eating DisorderEating DisorderThe purpose of this study is to test the feasibility, acceptability, and preliminary efficacy of a novel couple-based intervention for binge-eating disorder (BED).
Evaluate the Maintenance of Efficacy of SPD489 in Adults Aged 18-55 Years With Moderate to Severe...
Binge Eating DisorderTo evaluate maintenance of efficacy based on time to relapse between SPD489 (50 or 70mg) and placebo, as measured by the number of binge days (defined as days during which at least 1 binge episode occurs) per week as assessed by clinical interview based on subject diary and Clinical Global Impression - Severity (CGI-S) scores for patients who responded to SPD489 by the end of the Open-label Treatment Phase.
Influence of Appetite Related Hormones in Binge Eating Behaviour Among the Overweight and Obese...
Binge Eating BehaviourMalaysia has increasing challenges in lifestyle related diseases, which is related to eating habits and disorders. According to the National Health & Morbidity Survey in 2011; it was reported the prevalence of obesity is 15.1% in 2011; or 2.5 million of the population,; an increase of 7/9% when compared to the 14% prevalence in 2006. Binge eating is a symptom described in various eating disorders. It is an under-diagnosed medical condition closely linked to higher body mass index (BMI) or obesity as well as personality psychopathology, psychiatric and psychological disturbances. Meta-analysis has demonstrated that extremely strict restriction in dietary calorie and fat intake is needed to achieve meaningful weight loss. Appetite and satiety are influenced by extremely complex central and gut-related hormonal systems which modulate the regulation of food intake Centrally acting hormones include Neuropeptide Y (NPY), agouti gene-related peptide, orexin which are appetite-stimulating, melanocortins and alpha-melanocortin-stimulating hormone which promote satiety. Gut-related peptides include ghrelin secreted by the stomach and the duodenum has orexigenic (appetite stimulating) effect; leptin secreted by adipose tissue has anorexic (appetite inhibiting) effect, cholecystokinin, glucagon-like peptide-1 (GLP-1) secreted by the proximal gastrointestinal tract which has slight anorexic effect, and peptide YY (PYY). Appetite and obesity have also been commonly related to stress and may influence binge-eating episodes. Previous studies have demonstrated that high stress hormone cortisol is associated with increased appetite and cravings, with preference for high carbohydrate content, thus leading to weight gain. In the previous study performed by our group on 738 normal subjects who were staffs of the Ministry of Health, Putrajaya, we found a prevalence of 19% binge eating behaviour, 83% of whom were either obese or overweight. GLP-1 analogue used for the treatment of type 2 diabetes and is also shown to produce and maintain weight loss. Liraglutide, which provides a supra physiological amount of GLP-1 may cause appetite inhibition thus may benefit in reducing binge eating. The aim of this study is to closely observe the extensive profile of neuropeptide Y, ghrelin, leptin and GLP-1, influenced by a standard meal in binge eaters in comparison to non-binge eating controls. In addition, we aim to determine the association between binging and the respective appetite-related hormones and also cortisol. Finally we will also be assessing the efficacy of novel hormonal treatment of Liraglutide in reducing binge eating.
The Effects of Repetitive Transcranial Magnetic Stimulation in Obese People With BED
Binge EatingObesityThe presence of binge eating (BE) is a core feature of bulimic syndromes. Binge eating disorder (BED) is a new category in DSM-5 highly associated with higher body mass index (BMI). The neural mechanisms that underlie BE are of great interest in order to improve treatment interventions. Brain mechanisms underlying drug and food craving are suggested to be similar. These mechanisms demonstrated hyperactivity in the orbitofrontal and anterior cingulate cortex and lack of regulatory influence from lateral prefrontal circuits. Several novel studies began to assess the potential benefits of brain stimulation in reducing craving and associated addictive behaviors with promising results. Previous findings testing a one-off session of repetitive transcranial magnetic stimulation (rTMS) in healthy women identified as strong cravers and individuals with bulimia nervosa or bulimic-type eating disorders reported reduction of food craving and BE, providing evidence to support a broader and deeper investigation of the benefits associated with rTMS. Importantly, the use of brain imaging studies contributes to the understanding of psychiatric disorders and underlying mechanisms being target by the rTMS intervention. Objectives: The primary aim is to investigate the effects of rTMS over BE frequency. Secondary aims include the evaluation of the effects of rTMS on food craving, body weight, brain activity, cognition, general psychopathology, hormonal regulation and neurobiological markers. Methods: Sixty obese females with BED will be randomized to receive 20 sessions of rTMS (n=30) or placebo (n=30) scattered 3 days/week. Expected Results: Primarily it is expected that rTMS intervention will decrease BE frequency. Consequently, body weight will be reduced. It is also expected that food craving be decreased, cognitive performance be enhanced, and neurobiological markers be improved.
Guided Self-Help for Binge Eating Disorder
Binge Eating DisorderThe proposed study will employ a randomized design to evaluate the efficacy of two group-based guided self-help treatments: Integrative Response Therapy (IRT) and Cognitive Behavior Therapy Guided Self-Help, a treatment of known efficacy, in group-format (CBT-GSHg) in the treatment of Binge Eating Disorder (BED), and explore (1) moderators and mediators of treatment, (2) the relative cost-effectiveness of the two treatments, and (3) between group differences on secondary measures (e.g., eating disorder and general psychopathology).
Forced-dose Titration of SPD489 in Adults With Binge Eating Disorder
Binge Eating DisorderTo evaluate the efficacy of SPD489 compared to placebo in the treatment of moderate to severe binge eating disorder as measured by the number of binge days per week
Testing an Alternative Therapy for Bulimia Nervosa
Eating DisordersThis study will compare a new method of treatment for bulimia nervosa (ICAT), integrative cognitive-affective therapy, to the current standard method of treatment, cognitive behavioral therapy (CBT).