Severity Of Binge Eating Research Articles

Testing a Reward-Processing Model of Negative Urgency in Women With and Without Binge Eating

Negative urgency (i.e., the tendency to act impulsively when experiencing negative affect) is robustly associated with psychopathology, but the mechanisms underlying negative urgency and its relation to mental health are not well understood. In addition to interfering with cognitive control, negative emotions may lead to impulsive behavior by enhancing reward processing of desired stimuli. In this study, we tested an emotion-enhanced reward-processing model of negative urgency in 153 women who spanned the spectrum of binge-eating severity. Participants completed two experimental tasks under both stressful- and relaxed-mood conditions while physiological, behavioral, and self-report indices of reward processing of palatable food were assessed. Contrary to hypotheses, reward processing of food was not heightened when stressed versus relaxed either in the full sample or in participants with greater negative urgency or binge-eating frequency/severity. Findings are discussed considering study limitations and previous mechanistic work on negative urgency.

Change in symptoms of depression and eating disorders in adolescents with obesity participating in a clinical trial

Depression and eating disorder (ED) risk are heightened during adolescence(1) and both were exacerbated during COVID-19 lockdowns. This analysis reports changes in self-reported symptoms of depression and eating disorders throughout the Fast Track to Health trial. Fast Track to Health was a 52-week multi-site randomised-controlled trial, conducted 2018-2023, comparing intermittent (IER) and continuous energy restriction (CER) in adolescents with obesity and ≥1 associated comorbidity(2). The Centre for Epidemiologic Studies Depression Scale-revised 10-item version for adolescents (CESDR) was used to assess symptoms of depression (no symptoms, sub-threshold, or possible, probable, major depressive episode). Eating Disorder Examination Questionnaire (EDE-Q) was used to assess ED risk; defined as global score ≥2.7, ≥2 episodes of binge eating with/without loss of control, or ≥1 episode of purging within the last 28-days. The Binge Eating Scale (BES) assessed severity of binge eating (no binge eating, mild/moderate, severe). Adolescents were monitored for disordered eating during dietetic consults. Linear mixed models, retaining all data consistent with intention-to-treat analysis, were used to estimate the change in outcomes from baseline to week-52. Descriptive statistics were used to describe the number of participants meeting screening criteria at baseline and week-52. One hundred and forty one adolescents were enrolled and 97 completed the trial, with median (IQR) EDE-Q score 2.28 (1.43 to 3.14), CESDR 9.00 (4.0 to 14.5) and BES 11.0 (5.0 to 17.0) at baseline. EDE-Q (change in estimated marginal means [SE], IER −0.63 [0.18], CER −0.56 [0.17]) and CESDR (IER −2.70 [1.15], CER −3.87 [1.07]) scores reduced between baseline and week-52 in both groups (p<0.05) with no difference between groups. There was a between group difference (p = 0.019) in change in BES. The IER group had a reduction between baseline and week-52 (−3.72 [1.27]) and the CER group had no change. At baseline, 31 (22%) adolescents were classified as having a possible/probable/major depressive episode, 110 (78%) met ≥1 ED criteria and 28 (21%) as mild/moderate or severe binge eating, reducing to 8 (9%), 56 (61%) and 15 (16%) respectively at week-52. A small sub-group of adolescents required additional support for disordered eating. Overall, treatment-seeking adolescents with obesity have symptoms of depression and ED. Although symptoms reduce for most, some required additional support. Screening and monitoring for depression and ED are important to ensure early intervention.

A Study on the Association Between Metacognition About Desire Thinking, Eating Beliefs, and Craving among Indian Women with Binge-eating Behavior

Binge-eating disorder (BED) represents a complex condition characterized by recurrent episodes of uncontrolled overeating, leading to significant distress and health consequences. This study aims to investigate the intricate interplay between metacognition, desire thinking, eating beliefs, and craving among Indian women with binge-eating behavior. Drawing upon the Metacognitive Model of Eating, we explore how metacognition relates to desire thinking and craving and whether it acts as an independent predictor of binge-eating severity in this population. The study's findings hold potential implications for the development of metacognitive interventions tailored to treat BED in the context of Indian culture. By delving into these cognitive facets, this research strives to enhance our understanding of the cognitive underpinnings of BED among Indian women and inform more effective treatment strategies.

Independent associations of food addiction and binge eating measures with real-time eating behaviors and contextual factors: An exploratory ecological momentary assessment study

Food addiction (FA) is a concept centered around the addictive potential of highly palatable processed foods, though there is debate over the discriminative validity of FA as a distinct construct from binge-eating symptomatology. This study explored how trait measures of FA and binge-eating symptoms independently and interactively predicted eating behaviors and posited correlates of FA and binge eating measured via ecological momentary assessment (EMA). Adult participants (N = 49) who met the criteria for FA and/or binge-eating disorder completed baseline measures of FA (Yale Food Addiction Scale [YFAS 2.0]) and binge-eating symptoms (Eating Pathology Symptom Inventory [EPSI] binge eating scale) followed by a 10-day EMA protocol. Generalized linear mixed models examined the independent effects of YFAS 2.0, EPSI, and their interaction predicting EMA outcomes. Higher YFAS 2.0 symptom count scores were uniquely related to greater EMA-measured overeating, loss of control eating, negative and positive affect, and impulsivity when controlling for EPSI scores. Conversely, higher EPSI scores were uniquely related to greater EMA-measured eagerness and urge to eat, and expectancies that eating would improve mood. No interaction effects were significant. These results highlight potential distinctions between phenomena captured by FA and other measures of binge eating, in that FA symptoms may be a marker of heightened binge-eating severity, emotional arousal, and impulsivity.

Aberrant reward-related neural activation: Dimensional correlate of binge-eating severity or categorical marker of binge eating?

Binge eating (BE) is characterized by consuming an objectively large amount of food in a short period of time and experiencing loss of control over one's eating. The neural underpinnings of monetary reward anticipation and their association with BE severity remain poorly understood. Fifty-nine women aged 18 to 35 (M = 25.67, SD = 5.11) with a range of average weekly BE frequency (M = 1.96, SD = 1.89, range = 0–7) completed the Monetary Incentive Delay Task during fMRI scanning. Mean percent signal change within the left and right nucleus accumbens (NAc) during anticipation of monetary gain (versus non-gain) was extracted from a priori-defined functional 5 mm spheres and correlated with average weekly BE frequency. Exploratory voxel-wise whole-brain analyses examined the association between neural activation during anticipation of monetary reward and average weekly BE frequency. Body mass index and depression severity were covariates of non-interest in analyses. Mean percent signal change in the left and right NAc inversely correlated with average weekly BE frequency. Whole-brain analysis revealed no significant associations between neural activation during reward anticipation and average weekly BE frequency. In exploratory case-control analyses, mean percent signal change in the right NAc was significantly lower in women with BE (n = 41) versus women without BE (n = 18), but whole-brain analyses revealed no significant group differences in neural activation during reward anticipation. Decreased right NAc activity during monetary reward anticipation may distinguish women with and without BE.

The Metacognitions about Binge Eating Questionnaire: Investigation of the association between specific metacognitions and Binge Eating Disorder.

Literature suggested that metacognitions are involved in eating problems and may be relevant to the understanding of Binge Eating Disorder (BED). The goal of the current studies was to develop the first self-report instrument on metacognitions about binge eating. In Study 1, a community sample completed the Metacognitions about Binge Eating Questionnaire (MBEQ); an Exploratory Factor Analysis (EFA) was performed. In study 2, a community sample completed the MBEQ and measures assessing severity of binge eating, irrational food beliefs, anxiety, depression, impulsiveness. A Confirmatory Factor Analysis (CFA) was performed. Concurrent and incremental validity were assessed. In study 3, a clinical sample of participants with a diagnosis of BED completed the MBEQ and other measures. Bivariate correlational analysis and hierarchical linear regression were performed. Participants from the general population and participants with a diagnosis of BED were compared. EFA and CFA supported a two-factor solution consisting of positive and negative metacognitions about binge eating. Concurrent and incremental validity were acceptable. The metacognitions factors correlated positively with anxiety, depression, irrational food beliefs, impulsiveness in the community sample, and anxiety, irrational food beliefs, impulsiveness in clinical sample. The metacognitions factors contributed to the prediction of BEDs symptoms, in community and clinical samples, over and above age, gender, impulsiveness, anxiety, depression, irrational food beliefs. The MBEQ possesses good psychometric properties and appears a reliable and valid measure of positive and negative metacognitions about binge eating. Metacognitions about binge eating could be a therapeutic target to reduce the severity of binge eating episodes.

Identifying eating disorders in adolescents and adults with overweight or obesity: A systematic review of screening questionnaires.

ObjectiveThis review aimed to examine the validity of self‐report screening questionnaires for identifying eating disorder (ED) risk in adults and adolescents with overweight/obesity.MethodFive databases were searched from inception to September 2020 for studies assessing validation of self‐report ED screening questionnaires against diagnostic interviews in adolescents and adults with overweight/obesity. The review was registered with PROSPERO (https://www.crd.york.ac.uk/PROSPERO/display_record.php?RecordID=220013).ResultsTwenty‐seven papers examining 15 questionnaires were included. Most studies validated questionnaires for adults (22 of 27 studies), and most questionnaires (12 of 15) screened for binge eating or binge‐eating disorder (BED). The Eating Disorder Examination Questionnaire (sensitivity = .16–.88, specificity = .62–1.0) and Questionnaire on Eating and Weight Patterns (sensitivity = .07–1.0, specificity = .0–1.0) were most frequently validated (six studies each). Five studies of three questionnaires were in adolescents, with the Adolescent Binge‐Eating Disorder Questionnaire having highest sensitivity (1.0) but lower specificity (.27). Questionnaires designed to screen for BED generally had higher diagnostic accuracy than those screening for EDs in general.DiscussionQuestionnaires have been well validated to identify BED in adults with overweight/obesity. Validated screening tools to identify other EDs in adults and any ED in adolescents with overweight/obesity are lacking. Thus, clinical assessment should inform the identification of patients with co‐morbid EDs and overweight/obesity.Public SignificanceIndividuals with overweight/obesity are at increased risk of EDs. This review highlights literature gaps regarding screening for ED risk in this vulnerable group. This work presents possibilities for improving care of individuals with overweight/obesity by reinventing ED screening tools to be better suited to diverse populations.

Hyper-palatable food consumption during binge-eating episodes: A comparison of intake during binge eating and restricting.

The study aim was to elucidate the degree to which hyper-palatable foods (HPF) are consumed during binge episodes compared to restricting episodes, and to test the association between HPF intake during each episode and respective episode frequency. This study was a secondary analysis of data from a larger study on eating disorders. The present sample included adults (N=147, 83% women) diagnosed with sub-threshold (41%) or full-threshold (59%) bulimia nervosa (BN). Foods consumed during binge and restricting episodes were assessed using the Eating Pathology Symptoms Inventory-Clinician Rated Version. A standardized definition of HPF developed previously was applied to foods consumed during binge and restricting episodes. A Wilcoxon matched-pairs signed-rank test was used to test the difference between total caloric intake from HPF (KcalHPF) and percentage of caloric intake from HPF (PercHPF) during binge episodes relative to restricting episodes. Four linear regression models tested HPF intake (KcalHPF and PercHPF) during both episode types (binge and restricting) as predictors of respective episode frequency. There was a significant difference between median KcalHPF (1846.6 vs. 279.6; Z=-13.38, p<.001) and PercHPF during binge compared to restricting episodes (95% vs. 61%; Z=-7.35, p<.001). Regression analyses demonstrated that KcalHPF during binge episodes was significantly associated with binge episode frequency (B=0.002; p<.001), but not PercHPF (p=.287). Results suggest that HPF may be primarily consumed during binge episodes among individuals with BN, and may be associated with greater binge-eating frequency. Findings from the current study support an underlying assumption of theoretical models of binge eating, suggesting that highly rewarding, hyper-palatable foods (HPF), may constitute the vast majority of energy intake during binge-eating episodes. Additionally, a substantial amount of energy intake from HPF may occur during restricting episodes among people with bulimia nervosa. Greater HPF intake during binge eating may also be associated with binge-eating severity.

Emotion Dysregulation and Eating Disorder Symptoms: Examining Distinct Associations and Interactions in Adolescents

Emotion dysregulation has been posited as a key transdiagnostic factor of mental health difficulties, including eating disorders. However, how this transdiagnostic factor interacts with the disorder-specific factor of weight and shape concerns remains unclear. The current study examined whether emotion dysregulation is associated with eating disorder behaviors over and above the association between weight and shape concerns and whether these two factors interacted. The current study used data from two samples, a community sample of high school students (n = 2699), and a clinical sample of adolescents receiving outpatient treatment for an eating disorder (n = 149). Participants completed self-report measures on their eating behaviors, weight/shape concerns, and emotion dysregulation. Findings showed that emotion dysregulation had a unique association with engaging in binge eating and purging (community sample only). Weight and shape concerns were found to have a unique association with engaging in binge eating, fasting, purging, and driven exercise (community sample only). Additionally, weight and shape concerns moderated the association between emotion dysregulation and the probability of engaging in binge eating and driven exercise, whereby the strongest association between emotion dysregulation and these behaviors were observed among adolescents with the lowest levels of weight and shape concerns. Regarding the frequency of eating disorder behaviors, emotion dysregulation had a unique association with severity of binge eating and fasting. Weight and shape concerns were uniquely associated with severity of fasting and driven exercise (community sample only). Findings suggest that emotion dysregulation is a distinct factor of eating disorder behaviors among adolescents.

Examining the Clinical Correlates of Overeating and Binge-Eating Behaviors Among U. S. Veterans

Pressure to meet U.S. military weight requirements during service may predispose some service members to develop psychiatric disorders such as eating disorders or unhealthy eating behaviors, which may persist after military discharge. Specifically, research examining U.S. military veterans has found that in weight management programs, veterans with binge-eating behaviors have shown poor treatment outcomes. Overall, previous research suggests that veterans experience considerable and persistent disordered eating problems, and in addition may experience a higher prevalence of disordered eating in comparison to the general U.S. population. Research on Post-9/11 Operation Enduring Freedom/Operation Iraqi Freedom/Operation New Dawn (OEF/OIF/OND) veterans is needed as this group frequently presents with high rates of medical and psychiatric disorders. The current study used clinician-administered structured interviews to examine relationships between psychiatric, health, and demographic variables in a sample of Post-9/11 OEF/OIF/OND veterans with binge-eating or overeating behavior or neither. This article presents secondary analyses of the baseline phase from data obtained for the Survey of the Experiences of Returning Veterans. Using structured phone interviews, we cross-sectionally examined patterns of medical comorbidities between sociodemographic, health, eating, and psychiatric variables in 846 recently deployed U.S. veterans with binge-eating behaviors (reporting both overeating and loss of control [LOC] eating), overeating behaviors (overeating without LOC), or healthy controls (absence of any disordered eating). Study procedures were approved by the Department of Veterans Affairs (VA) Institutional Review Boards, and informed consent was obtained from the participants. A series of chi-square and analysis of variance tests revealed significant bivariate between-group differences in sociodemographic, health, eating, and psychiatric variables. Variables with significant group differences (P < .05) were entered into a multinomial logistic regression to examine relationships between psychiatric, health, and eating factors and binge-eating severity. Results of the multinomial logistic regression analysis showed that women relative to men were less likely to overeat. When comparing the binge-eating group and controls, higher body mass index was associated with higher odds of binge eating. Furthermore, for the overeating group in comparison to controls, fasting behavior was associated with higher odds of overeating. For the psychiatric variables, the binge-eating and overeating groups were associated with higher rates of compulsive buying when compared to healthy controls. Additionally, the overeating group was associated with higher rates of alcohol dependence. Lastly, binge-eating and overeating behaviors were positively associated with specific psychiatric and health comorbidities. Further research is needed to inform the development of effective treatments for disordered eating problems, as evidenced by an anticipated increase of veterans entering the VA healthcare system and the high rate of binge eating observed in our study and prior research in Post-9/11 veterans. Moreover, our study findings suggest the relevance of screening veterans for compulsive buying. This study was limited by its relatively small sample which only examined disordered eating behaviors. Future studies could simultaneously explore binge-eating behaviors and binge-eating disorder diagnoses in larger samples. Study strengths include a diverse sample of Post-9/11 veterans with sizable female representation.

The Impact of Restrictive and Non-restrictive Dietary Weight Loss Interventions on Neurobehavioral Factors Related to Body Weight Control: the Gaps and Challenges.

Restrictive diets, such as low-calorie diets, are difficult to maintain in the long term. For this reason, their popularity has decreased compared to non-restrictive approaches, which instead promote healthy eating strategies. Since both strategies may entail different neurobiological mechanisms, this review will examine the current evidence on the effects of restrictive and non-restrictive interventions on neurobehavioral factors. Restrictive diets appear to improve eating behaviors, and the evidence reviewed argues against the notion that they may worsen the severity of binge eating. Moreover, they may lead to short-term changes in brain structure and improvements in cerebrovascular markers which, in turn, could impact eating behaviors. Non-restrictive interventions may have a positive effect on weight management and eating behaviors. However, evidence of their neural effects is scarce. Small sample sizes, short follow-ups, and the absence of control groups are limitations of the studies targeting both interventions. Rigorous long-term randomized studies are needed to examine the neurobehavioral effects of restrictive and non-restrictive approaches.

Executive functions and depressive symptoms interplay inbinge eating disorder: A structural equation model analysis.

Executive functions (EF) have been so far investigated as potential endophenotypes for binge eating disorder (BED). However, major critical limitations in previous research, such as the influence of obesity and comorbid depression, prevented any consensus to be reached. The present study investigated the association between depressive symptoms, a broad range of EF and binge eating severity in individuals with obesity and with/without BED, and whether this association may be explained by a mediation or independency model. One hundred and seven participants completed clinical and psychometric examination. Associations between EF, depressive symptoms and binge eating severity were assessed through bivariate correlation analysis, and the magnitude, as well as the direction of associations between variables, was estimated with structural equation model. Two reliable models were tested; results showed that depressive symptoms exhibited significant direct and indirect effects on the severity of binge eating; conversely, EF did not show either significant direct or indirect effect on binge eating severity. Depression contributes more than EF to psychopathology of BED. Thus, clinicians should routinely assess and, eventually, tailor depressive symptoms in treatment to improve the outcomes of patients with BED.

Associations among affect, diet, and activity and binge-eating severity using ecological momentary assessment in a non-clinical sample of middle-aged fathers.

Knowledge of within-day factors associated with binge-eating severity among middle-aged fathers is limited. The purpose of the current report was to examine within-day associations of affect, diet, and activity in relation to binge-eating severity using ecological momentary assessment (EMA) in men. Twenty-three middle-aged fathers completed 8days of EMA and wore accelerometers to objectively assess activity. Generalized estimating equations assessed relationships among affect, diet, and activity and binge-eating severity. When positive affect was above average, men reported greater binge-eating severity in the next 2h. Oppositely, when negative affect was above average, men reported less binge-eating severity in the next 2h. At times when men reported consumption of sweets and fast food, they reported higher binge-eating severity during the same 2-h window. Men with greater average levels of light activity reported less overall binge-eating severity. Findings show that affect, unhealthy food intake, and light activity could be targeted among middle-aged fathers to reduce binge-eating severity and prevent eating disorders. Level III: Evidence obtained from cohort or case-control analytic studies.

The Effectiveness of Lifestyle Intervention With “Choice Theory” on Weight Manengment in Women Suffered From Binge Eating

Introduction: Overweight and obesity is one of the physical consequences of bing eating disorder. The aim of this study was to determine the effectiveness of life style intervention with “choice theory” on weight manengment To reduce the severity of Binge eating in women suffered from Binge eating. Methods: In This experimental study with pretest and post test, 45 women suffered from Binge eating disorder with BMI ≥ 25 between 20 and 60 years Selected as available; and They were inserted completely randomly into intervention and diet and control groups (Groups of 15 people). The “Gormally's Binge Eating severity Scale” was used to assess Binge eating. Data were analyzed by SPSS/24 software. Results: the average scores of BES and BMI of the experimental group compared to the control and diet groups decreased significantly in the post-test stage and this decrease remained relatively constant in the follow-up stage. The results showed that lifestyle modification intervention with Choice Theory was effective in reducing the Binge Eating severity (p &lt;0.001) and reducing body mass index (p &lt;0.05) in women with Binge eating disorder. Conclusion: The lifestyle intervention with “choice theory” effected on decrease the binge eating severity and body mass index of women suffered from Binge eating. Hence it is recommended that health and other organizations apply this treatment of this people.

Are the Criterion B binge-eating symptoms interchangeable in understanding binge-eating severity? An item response theory analysis.

The Criterion B binge-eating symptoms represent five symptoms associated with binge eating. Any three out of five symptoms can be used to meet Criterion B. However, Criterion B symptoms may not be interchangeable in terms of how binge-eating severity is associated with each symptom. Item response theory (IRT) can test how endorsing each symptom relates to the overall level (i.e., severity) of binge-eating measured by Criterion B. We used IRT to identify (a) how each Criterion B symptom corresponded with binge-eating severity in a transdiagnostic binge-eating sample and (b) how well each symptom differentiated individuals with differing levels of severity. Participants (N = 219) were adults (80.8% female) with a current ED that included objective binge-eating episodes assessed via semi-structured interview. A two-parameter logistic IRT model evaluated how endorsement of each Criterion B symptom corresponded with the level of latent binge-eating severity. "Eating large amounts when not hungry" and "eating alone" reflected the highest binge-eating severity. "Eating alone" was the best discriminator across different binge-eating severity levels, whereas "uncomfortably full" was the poorest discriminator across binge-eating severity levels. Criterion B symptoms were not interchangeable in terms of what level of binge-eating severity corresponded with symptom endorsement. "Eating large amounts when not hungry" or "eating alone" may signify elevated binge-eating severity, whereas "uncomfortably full" and "feeling disgusted/depressed/guilty" were not necessarily indicative of elevated severity. Results suggested that Criterion B may need to be revised to eliminate symptoms that are redundant with other binge-eating diagnostic criteria.

Weight Stigmatization and Binge Eating in Asian Americans with Overweight and Obesity.

Weight stigma and binge eating have been found to be associated in Western populations; however, this relationship is understudied among Asian Americans. The aims of the study were to (1) investigate the prevalence of binge eating and its relationship with experienced weight stigma in higher-weight Asian Americans, and (2) examine whether the level of acculturation moderates this relationship. Data were collected from a cross-sectional study with 166 higher-weight Asian American adults living in North Carolina, United States. Demographic data, the frequency of experiencing weight stigma, the severity of binge eating, the levels of acculturation, the perceived racism against Asians, and perceived stress were assessed via self-reported questionnaires. The results indicated that experienced weight stigma was a significant independent predictor over and above the effects of other stressors, such as racism and general stress. The level of acculturation did not influence the relationship between the experienced weight stigma and binge eating after adjusting for relevant covariates. Our findings contribute to the limited literature examining weight stigma and binge eating among Asian American populations, highlighting that higher levels of experienced weight stigma are associated with a greater degree of binge eating.

The link between external and internal shame and binge eating: the mediating role of body image-related shame and cognitive fusion.

Despite the growing interest in binge eating, research on this public health problem in male samples is limited. Indeed, the examination of underlying emotional mechanisms and potential gender differences in binge eating are still needed. This study explored differences between men and women in binge eating severity and related emotional mechanisms. Also, this study explored the impact of external and internal shame on binge eating severity, when mediated by body image-related shame and cognitive fusion, in men and women. The sample consists of 787 participants from the general population (144 men and 643 women), aged from 18 to 40years. Women presented higher levels of binge eating symptomatology and also of body image-related difficulties, than men. Path analysis results showed that external and internal shame had a significant impact on binge eating severity, and that these relationships were mediated by body image-related shame and cognitive fusion. Multi-group analysis revealed the invariance of this model in both sexes. Although men and women revealed significant differences in the severity of binge eating and related emotional mechanisms, underlying mechanisms in binge eating seem to be invariant for gender. Indeed, this study suggested that both external and internal shame experiences play an important role in binge eating symptomatology, when associated with body image-related shame and cognitive fusion, both in men and women. These findings seem to support that binge eating may emerge as a maladaptive attempt to cope with shame experiences in both sexes. Level III: case control analyticstudy.

Relationships Between Self-Esteem, Interoceptive Awareness, Impulse Regulation, and Binge Eating. Path Analysis in Bariatric Surgery Candidates.

ObjectiveThe current study investigates the hypothesis that the effect of low self-esteem on binge eating in bariatric candidates was mediated by both difficulties in the perception of bodily signals and impulse regulation after accounting for gender, age, and body mass index.Method59 preoperative patients (both male and female) were screened by means of self-report measures of self-esteem, interoceptive deficits, impulse dysregulation, and severity of binge eating. Results: Results indicated that all direct effects were significant, except for the self-esteem on impulse dysregulation and the interoceptive deficits on binge eating. Self-esteem had a significant indirect effect on impulse dysregulation mediated by interoceptive deficits. Impulse dysregulation, in turn, mediates the effect of interoceptive deficits on binge eating. Moreover, the path starting from self-esteem, going first to interoceptive deficits, then going via impulse regulation difficulties to binge eating was significant.Results and conclusionsA potential underlying mechanism through which self-esteem is linked to binge eating has been suggested. Obese individuals who perceived themselves as inadequate may carry a stronger burden by the confusion and mistrust related to bodily functioning and, consequently, may act more impulsively, through binge eating.

Effort expenditure for rewards task modified for food: A novel behavioral measure of willingness to work for food.

Binge eating and associated eating disorders are characterized by abnormalities in reward processing. One component of reward is willingness to expend effort to obtain a reinforcer. The Effort Expenditure for Rewards Task (EEfRT) is a widely used behavioral measure of willingness to work for money. We sought to modify the EEfRT to examine willingness to work for food reward and to preliminarily examine the association between binge eating and effort expenditure for food. Participants were 63 females recruited to span the spectrum of binge-eating severity. The modified EEfRT required participants to make a series of choices between an easier, low-reward option (one portion of food) and a harder, high-reward option (between two to five portions of food). Each trial also varied on probability of winning. Participants self-reported engagement in the task, working hard at easy and hard tasks, and making choices based on reward probability and magnitude. As with the original EEfRT, probability, reward magnitude, and their interaction predicted the likelihood of choosing the hard task. Across two different measures, binge-eating symptoms interacted with reward magnitude, such that those with high binge eating used reward magnitude more to make trial choices than those with low binge eating. These data provide initial support for the validity of the EEfRT modified for food as a behavioral measure of willingness to work for food reward. The impact of binge eating on effort expenditure must be replicated in samples of patients with eating disorders.

Eating Disorders Impact on Vigilance and Decision Making of a Community Sample of Treatment Naive Attention-Deficit/Hyperactivity Disorder Young Adults.

Although impulsivity is suggested as a possible link to explain the association of Attention-Deficit/Hyperactivity Disorder (ADHD) with an Eating Disorder (ED), there is little research on how clinical and cognitive/neuropsychological functioning might change when this comorbidity occurs. ADHD individuals are at a higher of developing ED and also obesity. Some research has described the impact of ADHD in clinical treatment-seeking samples of ED patients. Consequently, we investigated how ED impacted on clinical and cognitive variables of a community sample of treatment-naive ADHD individuals. Ninety college students arranged in three groups (ADHD+ED, ADHD only and Controls) were analyzed using semi-structured interviews for ADHD (K-SADS), the Iowa Gambling Task, the Conner's Continuous Performance Test, Digit and Visual span, as well as rating scales for anxiety (STAI), depression (BDI) and impulsivity (BIS-11), and binge eating (BES). We found that ADHD+ED individuals significantly differed from both groups, presenting with a higher body mass index; more hyperactivity-impulsivity symptoms; higher binge eating scores; more omission errors on the Continuous Performance Test; disadvantageous choices on the Iowa Gambling Task. Also, we demonstrated through a moderation/mediation analysis that a greater level of binge eating mediated the increases in body mass index on our sample. There were no significant paths to explain binge-eating severity through changes on any of the neuropsychological tests used. The presence of an ED in normal weight in a community sample of ADHD individuals is associated with higher body mass index and a worse cognitive functioning.