Gender difference in the prevalence of eating disorder symptoms

Psychological Risk Factors for the Development of Restrictive and Bulimic Eating Behaviors: A Polish and Vietnamese Comparison

The aim of this paper is to identify psychological factors which are culture specific or common predictors for restrictive and bulimic behaviors towards eating for young women raised in different cultures. The study included 661 young women from Poland (n = 233) and Vietnam (n = 428). Subjects filled-in the Eating Disorders Inventory (EDI-3) and the Multidimensional Body-Self Relations Questionnaire-Appearance Scales (MBSRQ-AS), and body measurements were collected to calculate anthropometric indices. Women form Vietnam were less satisfied with their appearance than were their Polish peers, but Vietnamese showed a lower level of preoccupation with being overweight and fear of obesity. Intercultural differences indicate that Vietnamese women show greater intensities for psychological variables, connected with restrictive and bulimic eating behaviors, verified in the research model: low self-esteem, personal alienation, interpersonal insecurity, interpersonal alienation, emotional dysregulation, interoceptive deficits, perfectionism and asceticism, and anxiety.

The food diary as a pedagogical strategy in undergraduate nursing nutrition education: A student evaluation

BACKGROUND

Few studies have evaluated educational nutrition activities in undergraduate nursing, and none have published how the established food assessment method, the food diary, can be used as a pedagogical method in this context.

OBJECTIVE

To describe undergraduate nursing students' learning outcomes of basic nutrition and important elements for their learning after conducting a one-day food record with a subsequent seminar (henceforth: "the food diary method").

DESIGN

Cross-sectional.

SETTING

Undergraduate nursing program in Sweden.

PARTICIPANTS

161 students.

METHODS

Participants conducted a one-day food record by documenting their food intake and calculating the nutritional values. After completion, students participated in a seminar, and an evaluative questionnaire was distributed at the end. The questionnaires contained both numerical and free-text questions.

RESULTS

Of 162 students attending the seminar, all but one completed the questionnaire (response rate: 99%). The highest rated learning outcome, on the 5-point Likert scale, was an increased understanding for the nutritional recommendations (Median, M = 5). The highest rated educational aspects were that they compared their records with the nutritional recommendations (M = 5), and the calculations of nutritional values of their records (M = 5). Participants also indicated that they gained information that would be useful for them as practicing nurses (M = 5).

CONCLUSIONS

Overall, the food diary method appeared to be a feasible method in educating and engaging undergraduate nursing students in the field of basic nutrition. These findings support results from previous studies in this area, such that educational nutrition activities that utilize active, experiential, and social learning strategies were appreciated by the students.

Self-reported eating disorder psychopathology prevalence in community-based female and male Albertans: Gender and age group comparisons

OBJECTIVE

We describe and compare eating disorder (ED) psychopathology prevalence in Canadian females and males across five age groups.

METHOD

This secondary data analysis study used the Eating Disorder Examination Questionnaire (EDE-Q) to assess ED psychopathology in 1,316 Alberta community-based female and male participants, aged 15 to 71.

RESULTS

Overall, 15.3% of female and 8.2% of male participants reported clinically-significant ED disturbances. Female participants reported greater global ED psychopathology than male participants, except older men and women aged 65-71, who reported similar, relatively low levels of global ED psychopathology. Women aged 65-71 endorsed less global ED psychopathology than younger females. More females than males reported regular binge eating and self-induced vomiting, whereas other ED behaviors were endorsed at similar rates.

DISCUSSION

This large-scale study, the first involving a Canadian sample, contributes to a small literature on ED psychopathology in community-based samples. The finding that 15% of female and 8% of male Albertans aged 15 to 71 endorsed clinically-significant ED disturbances is concerning; however, women aged 65-71 reported lower ED psychopathology than younger females. Gender and age differences were observed in global ED psychopathology. Routine ED screening of non-clinical adolescents and adults is warranted to permit prevention and early intervention.

Physiological, emotional and neural responses to visual stimuli in eating disorders: a review

BACKGROUND

Overconcern with food and shape/weight stimuli are central to eating disorder maintenance with attentional biases seen towards these images not present in healthy controls. These stimuli trigger changes in the physiological, emotional, and neural responses in people with eating disorders, and are regularly used in research and clinical practice. However, selection of stimuli for these treatments is frequently based on self-reported emotional ratings alone, and whether self-reports reflect objective responses is unknown.

MAIN BODY

This review assessed the associations across emotional self-report, physiological, and neural responses to both food and body-shape/weight stimuli in people with anorexia nervosa (AN), bulimia nervosa (BN) and binge eating disorder (BED). For food stimuli, either an aversive or lack of physiological effect was generated in people with AN, together with a negative emotional response on neuroimaging, and high subjective anxiety ratings. People with BN showed a positive self-rating, an aversive physiological reaction, and a motivational neural response. In BED, an aversive physiological reaction was found in contrast to motivational/appetitive neural responses, with food images rated as pleasant. The results for shape/weight stimuli showed aversive responses in some physiological modalities, which was reflected in both the emotional and neural responses, but this aversive response was not consistent across physiological studies.

CONCLUSIONS

Shape/weight stimuli are more reliable for use in therapy or research than food stimuli as the impact of these images is more consistent across subjective and objective responses. Care should be taken when using food stimuli due to the disconnect reported in this review.

Mindful Attention and Eating Expectancies among College Students with Obesity and a History of Trauma Exposure

Objectives

Trauma exposure and obesity are highly prevalent among college students and both are associated with disordered eating. There is a need to understand psychological factors that may be related to maladaptive eating behavior among college students with obesity and a history of trauma exposure.

Methods

Participants included 139 college students with obesity (defined as a BMI ≥ 30) and a history of trauma exposure (76.3% females; M _age = 25.4 years, SD = 8.07). The current study conducted three separate two-step hierarchical regressions examining mindful attention, and its relation to eating expectancies (expectancies of eating to help manage negative affect, expectancies of eating to alleviate boredom, and expectancies of eating to lead to feeling out of control).

Results

Results indicated that lower levels of mindful attention were related to greater levels of expectancies of eating to help manage negative affect (b = -4.16, SE = 1.08, p = .023, CI_95% = -7.72, -0.60, sr² = .04), expectancies of eating to alleviate boredom (b = -1.09, SE = 0.39, p = .006, CI_95% = -1.86, -0.32, sr² = .06), and expectancies of eating to lead to feeling out of control (b = -1.62, SE = 0.40, p < .001, CI_95% = -2.41, -0.83, sr² = .11). Results were observed over, and above variance accounted for by sex (assigned at birth), body mass index (BMI), and posttraumatic stress disorder (PTSD) symptom severity.

Conclusions

Overall, the results from the present investigation suggest the potential importance and need for future research in the role of mindful attention in relation to several distinct eating expectancies associated with maladaptive eating.

Understanding the relationship between negative emotional eating and binge eating: The moderating effects of acting with awareness and non-reactive mindfulness

OBJECTIVES

Negative emotional eating and binge eating are positively related, occur in diverse populations, and may be driven by similar mechanisms. Mindfulness facets such as acting with awareness, describe, non-judgement, non-reactive, and observe may moderate the relationship between these maladaptive eating phenotypes.

METHOD

A cross-sectional study assessed emotional eating-depression (Emotional Eating Scale-Revised, depression subscale), trait mindfulness facets (Five Facet Mindfulness Questionnaire-Short Form), and binge eating severity (Binge Eating Scale) in adults (N = 258).

RESULTS

Emotional eating-depression was less strongly associated with binge eating severity in participants with higher acting with awareness mindfulness. Emotional eating-depression was more strongly associated with binge eating severity in participants with higher non-reactive mindfulness.

CONCLUSIONS

Acting with awareness and non-reactive mindfulness may be important treatment targets in concurrent presentations of emotional eating-depression and binge eating.

Alterations in reward network functional connectivity are associated with increased food addiction in obese individuals

Functional neuroimaging studies in obesity have identified alterations in the connectivity within the reward network leading to decreased homeostatic control of ingestive behavior. However, the neural mechanisms underlying sex differences in the prevalence of food addiction in obesity is unknown. The aim of the study was to identify functional connectivity alterations associated with: (1) Food addiction, (2) Sex- differences in food addiction, (3) Ingestive behaviors. 150 participants (females: N = 103, males: N = 47; food addiction: N = 40, no food addiction: N = 110) with high BMI ≥ 25 kg/m2 underwent functional resting state MRIs. Participants were administered the Yale Food Addiction Scale (YFAS), to determine diagnostic criteria for food addiction (YFAS Symptom Count ≥ 3 with clinically significant impairment or distress), and completed ingestive behavior questionnaires. Connectivity differences were analyzed using a general linear model in the CONN Toolbox and images were segmented using the Schaefer 400, Harvard-Oxford Subcortical, and Ascending Arousal Network atlases. Significant connectivities and clinical variables were correlated. Statistical significance was corrected for multiple comparisons at q < .05. (1) Individuals with food addiction had greater connectivity between brainstem regions and the orbital frontal gyrus compared to individuals with no food addiction. (2) Females with food addiction had greater connectivity in the salience and emotional regulation networks and lowered connectivity between the default mode network and central executive network compared to males with food addiction. (3) Increased connectivity between regions of the reward network was positively associated with scores on the General Food Cravings Questionnaire-Trait, indicative of greater food cravings in individuals with food addiction. Individuals with food addiction showed greater connectivity between regions of the reward network suggesting dysregulation of the dopaminergic pathway. Additionally, greater connectivity in the locus coeruleus could indicate that the maladaptive food behaviors displayed by individuals with food addiction serve as a coping mechanism in response to pathological anxiety and stress. Sex differences in functional connectivity suggest that females with food addiction engage more in emotional overeating and less cognitive control and homeostatic processing compared to males. These mechanistic pathways may have clinical implications for understanding the sex-dependent variability in response to diet interventions.

Celebrity influence on body image and eating disorders: A review

Celebrities are well-known individuals who receive extensive public and media attention. There is an increasing body of research on the effect of celebrities on body dissatisfaction and disordered eating. Yet, there has been no synthesis of the research findings. A systematic search for research articles on celebrities and body image or eating disorders resulted in 36 studies meeting inclusion criteria. Overall, the qualitative, correlational, big data, and experimental methodologies used in these studies demonstrated that exposure to celebrity images, appearance comparison, and celebrity worship are associated with maladaptive consequences for individuals' body image.

The Presentation of Eating Disorders in Saudi Arabia

Objective: There is lack of information on the presentation of eating disorders (EDs) in Saudi Arabia using gold standard clinical tools. The present study aimed to provide data on the presentation of EDs in Saudi Arabia using clinically validated measures.

Method: Hundred and thirty-three individuals (33 male) with a mean age of 22 years (2.63) completed three measures: the Eating Disorder Examination (EDE), a semi-structured interview, the Eating Disorder Examination Questionnaire (EDE-Q), a self-report measure, and the Depression Anxiety and Stress Scale (DASS-21) to measure comorbid symptoms.

Results: Individuals in Saudi Arabia reported higher levels of restraint, eating concern and shape concern and a higher global score, but lower levels of weight concern on the EDE-Q compared to the EDE. Female participants reported a higher global score, alongside significantly higher scores on the restraint, shape concern and weight concern subscales than males. The most common ED subtype was other specific feeding or ED. Compared with Western community samples, symptom severity in this purposive sample obtained from community settings was significantly higher in this sample.

Discussion: Individuals with eating, weight and shape concerns in Saudi Arabia may feel more comfortable expressing their symptoms on a self-report tool compared with a face to face interview. However, it is possible that a self-report measure may over-estimate the severity of symptoms. The data suggest that clinicians in Saudi Arabia should regularly screen for EDs in all genders. It is also important to note that ED symptoms are a cause for concern in young people in Saudi Arabia.

Gender-Dependent Associations of Anxiety and Depression Symptoms With Eating Disorder Psychopathology in a Representative Population Sample

Background: Evidence shows that anxiety and depressive disorders play an important role in eating disorder behavior. However, given the epidemiology of eating disorders, there is a need to investigate potentially gender-specific connections. Method: This study tested the associations of anxiety and depression symptoms with eating disorder symptoms and behaviors and explored whether they differed between men and women. Within a population-representative survey (N = 2,510; ages 14-94), participants completed measures of depression symptoms (PHQ-2), anxiety symptoms (GAD-2), and eating disorder symptoms (EDE-Q8). We conducted linear regression analyses of the EDE-Q8 sum score and General Linear Models on the three behaviors overeating, binge eating, and compensatory behaviors (self-induced vomiting/use of laxatives/excessive exercising). Results: Depression and anxiety symptoms were related to more eating disorder symptoms in men and women (irrespective of BMI, age, and income). The association of depression and eating disorder symptoms was slightly stronger in women. Overeating was more common in men and in depressed individuals, whereas compensatory behaviors were more common among anxious individuals, especially anxious women. Conclusion: The study extends previous research by using gender-specific methods in a representative sample. It indicates similarities and differences between men and women regarding disordered eating on a population level.

Appearance discrimination and binge eating among sexual minority men

Sexual minority men (SMM) face substantial disparities in rates of binge eating compared to heterosexual individuals, underscoring the need to study risk factors for the development of binge eating amongst SMM. One potential explanation for this disparity in binge eating is minority stress theory, which posits that minority groups face stressors, such as discrimination, due to their stigmatized position in society. Additionally, specific domains of discrimination may confer different levels of risk for binge eating. Therefore, the current study examined the association of various forms of discrimination, including appearance-based discrimination, and binge eating in a sample of SMM. A sample of 200 SMM (analytic sample of N = 187) from the greater Boston area completed self-report questionnaires assessing frequency of different forms of perceived discrimination (appearance, sexual orientation, race, etc.) and binge eating. A hierarchical binary logistic regression model was used to examine the association of different forms of discrimination with binge eating. 9% of the sample reported binge eating. Appearance-based discrimination was the most common form of discrimination (47%), and was significantly associated with binge eating, over and above all other forms of discrimination and sociodemographic variables, OR = 1.71, 95% CI = [1.24, 2.35], Wald χ2 (1) = 10.65, p = .001. Findings suggest that appearance-based discrimination may be related to binge eating in SMM. Clinicians may consider assessing appearance-based discrimination among SMM patients.

Biased Ghrelin Receptor Signaling and the Dopaminergic System as Potential Targets for Metabolic and Psychological Symptoms of Anorexia Nervosa

Anorexia Nervosa (AN) is a complex disease that impairs the metabolic, mental and physiological health of affected individuals in a severe and sometimes lethal way. Many of the common symptoms in AN patients, such as reduced food intake, anxiety, impaired gut motility or overexercising are connected to both the orexigenic gut hormone ghrelin and the dopaminergic system. Targeting the ghrelin receptor (GhrR) to treat AN seems a promising possibility in current research. However, GhrR signaling is highly complex. First, the GhrR can activate four known intracellular pathways Gαq, Gαi/o, Gα12/13 and the recruitment of β-arrestin. Biased signaling provides the possibility to activate or inhibit only one or a subset of the intracellular pathways of a pleiotropic receptor. This allows specific targeting of physiological functions without adverse effects. Currently little is known on how biased signaling could specifically modulate GhrR effects. Second, GhrR signaling has been shown to be interconnected with the dopaminergic system, particularly in the context of AN symptoms. This review highlights that a biased agonist for the GhrR may be a promising target for the treatment of AN, however extensive and systematic translational studies are still needed and the connection to the dopaminergic system has to be taken into account.

The interaction of negative psychological well-being and picky eating in relation to disordered eating in undergraduate students

The extant literature on picky eating focuses on children, leaving adults understudied. A sparse and mixed evidence base suggests relationships exist between picky eating and disordered eating in adults. The present study furthered this research by examining shared negative psychological correlates as moderators that may strengthen relationships between picky eating and disordered eating in undergraduate students. Participants (N = 509; 76.3% female) completed a cross-sectional survey assessing picky eating (Adult Picky Eating Questionnaire), disordered eating (Binge Eating Scale and Eating Disorder Examination-Questionnaire), and negative psychological correlates including anxiety, depression, and stress (Depression, Anxiety and Stress Scale - 21 Items), inflexible eating (Inflexible Eating Questionnaire), obsessive compulsive disorder (Short Obsessive Compulsive Disorder Screener), and social eating anxiety (adapted Social Phobia Scale) symptoms. Positive relationships were observed between picky eating and binge eating, dietary restraint, eating concerns, overall eating pathology, and all negative psychological correlates. Moderation analyses examined if negative psychological correlates strengthened relationships between picky eating and disordered eating. Higher inflexible eating and anxiety and stress symptoms interacted with higher picky eating in relation to disordered eating, specifically eating concerns. Interactions between picky eating and negative psychological correlates did not explain variance in binge eating, dietary restraint, and overall eating pathology. Findings complement research demonstrating overlap between picky eating and disordered eating and highlight specific negative psychological correlates that may strengthen relationships between picky eating and disordered eating. Researchers and clinicians interested in concurrent picky eating and disordered eating should consider these negative psychological correlates given their potential to worsen disordered eating.

Binge Eating and Binge Drinking: A Two-Way Road? An Integrative Review

Unhealthy diet and alcohol are serious health problems, especially in adolescents and young adults. "Binge" is defined as the excessive and uncontrolled consumption of food (binge eating) and alcohol (binge drinking). Both behaviors are frequent among young people and have a highly negative impact on health and quality of life. Several studies have explored the causes and risk factors of both behaviors, and the evidence concludes that there is a relationship between the two behaviors. In addition, some research postulates that binge eating is a precipitating factor in the onset and escalation of excessive alcohol consumption, while other studies suggest that alcohol consumption leads to excessive and uncontrollable food consumption. Given that no review has yet been published regarding the directionality between the two behaviors, we have set out to provide an upto- date overview of binge eating and binge drinking problems, analyzing their commonalities and differences, and their uni- and bidirectional associations. In addition, we explore the reasons why young people tend to engage in both behaviors and consider directions for future research and clinical implications.

Appetitive Traits in a Population-Based Study of Polish Adolescents within the PLACE-19 Study: Validation of the Adult Eating Behavior Questionnaire

Appetitive traits of food approach or food avoidance are commonly measured using the Adult Eating Behavior Questionnaire (AEBQ). However, there is no Polish version of the AEBQ validated for adolescents, and to the best of our knowledge, no study completed with the Polish version of the AEBQ has been published thus far. The present study aimed to validate the AEBQ in a population-based sample of Polish secondary school students and to assess differences in appetitive traits between boys and girls within the Polish Adolescents' COVID-19 Experience (PLACE-19) Study. The PLACE-19 Study was conducted in a group of 2448 adolescents recruited in May 2020 through the random quota sampling of secondary schools. The AEBQ was used to assess food approach subscales (Food Responsiveness, Emotional Over-Eating, and Enjoyment of Food) and food avoidance subscales (Satiety Responsiveness, Emotional Under-Eating, Food Fussiness, and Slowness in Eating). To validate the questionnaire, the standardized factor loadings within confirmatory factor analysis (CFA) with weighted least squares (WLS) were analyzed, and invariance was verified. The CFA presented good model fit, with χ² = 4826.105 (degrees of freedom (df) = 384), root mean square error of approximation (RMSEA) = 0.069 (90% confidence interval (CI): 0.067, 0.070), comparative fit index (CFI) = 0.90, and standardized root mean square residual (SRMR) = 0.08. The results revealed that, compared to the configural invariance model, the metric invariance model did not result in significantly decreased model fit, with ΔCFI = -0.002 and ΔRMSEA = -0.001, which were lower than the recommended cutoffs of 0.010 and 0.015, respectively. The scalar invariance model also did not result in significantly decreased fit of the model over the metric invariance model, with ΔCFI = -0.005 and ΔRMSEA = 0.000. Girls reported higher levels of Food Responsiveness (p < 0.0001), Emotional Over-Eating (p < 0.0001), Satiety Responsiveness (p < 0.0001), Emotional Under-Eating (p < 0.0001), and Slowness in Eating than boys (p < 0.0001), and the total AEBQ scores of girls were also higher (p < 0.0001). Positive inter-correlations were observed between all food approach subscales, as well as between Emotional Under-Eating and all food approach subscales for girls, boys, and the total sample; positive inter-correlations were also observed between the majority of food avoidance subscales. The present study confirmed the validity of the AEBQ in the studied population, and supported the associations between appetitive traits assessed using the AEBQ; it also indicated higher scores of both food approach and food avoidance subscales in girls than in boys in a population-based sample of Polish secondary school students.

Community norms for the Eating Disorder Examination Questionnaire (EDE-Q) among gender-expansive populations

PURPOSE

Gender-expansive individuals (i.e., those who identify outside of the binary system of man or woman) are a marginalized group that faces discrimination and have a high burden of mental health problems, but there is a paucity of research on eating disorders in this population. This study aimed to describe the community norms for the Eating Disorder Examination Questionnaire (EDE-Q) in gender-expansive populations.

METHODS

The participants were 988 gender-expansive individuals (defined as neither exclusively cisgender nor binary transgender) from The PRIDE study, an existing longitudinal cohort study of health outcomes in sexual and gender minority people.

RESULTS

We present the mean scores, standard deviations, and percentile ranks for the Global score and four subscale scores of the EDE-Q in this group as a whole and stratified by sex assigned at birth. Gender-expansive individuals reported any occurrence (≥1/28 days) of dietary restraint (23.0%), objective binge episodes (12.9%), excessive exercise (7.4%), self-induced vomiting (1.4%), or laxative misuse (1.2%). We found no statistically significant differences by sex assigned at birth. Compared to a prior study of transgender men and women, there were no significant differences in eating attitudes or disordered eating behaviors noted between gender-expansive individuals and transgender men. Transgender women reported higher Restraint and Shape Concern subscale scores compared to gender-expansive individuals. Compared to a prior study of presumed cisgender men 18-26 years, our age-matched gender-expansive sample had higher Eating, Weight, and Shape Concern subscales and Global Score, but reported a lower frequency of objective binge episodes and excessive exercise. Compared to a prior study of presumed cisgender women 18-25 years, our age-matched gender-expansive sample had a higher Shape Concern subscale score, a lower Restraint subscale score, and lower frequencies of self-induced vomiting, laxative misuse, and excessive exercise.

CONCLUSIONS

Gender-expansive individuals reported lower Restraint and Shape Concern scores than transgender women; higher Eating, Weight, and Shape Concern scores than presumed cisgender men; and lower Restraint but higher Shape Concern scores than presumed cisgender women. These norms can help clinicians in treating this population and interpreting the EDE-Q scores of their gender-expansive patients.

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

PURPOSE

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.

METHODS

The sample consists of 787 participants from the general population (144 men and 643 women), aged from 18 to 40 years.

RESULTS

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.

CONCLUSION

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 OF EVIDENCE

Level III: case control analytic study.

Patient descriptions of loss of control and eating episode size interact to influence expert diagnosis of ICD-11 binge-eating disorder

BACKGROUND

Although data suggest that the sense of "loss of control" (LOC) is the most salient aspect of binge eating, the definition of LOC varies widely across eating disorder assessments. The WHO ICD-11 diagnostic guidelines for binge eating do not require an objectively large amount of food, which makes accurate LOC diagnosis even more critical. However, it can be especially challenging to assess LOC in the context of elevated weight status and in the absence of compensatory behaviors. This ICD-11 field sub-study examined how descriptions of subjective experience during distressing eating episodes, in combination with different eating episode sizes, influence diagnoses of binge-eating disorder (BED).

METHOD

Mental health professionals with eating disorder expertise from WHO's Global Clinical Practice Network (N = 192) participated in English, Japanese, and Spanish. Participants were asked to select the correct diagnosis for two randomly assigned case vignettes and to rate the clinical importance and ease of use of each BED diagnostic guideline.

RESULTS

The presence of LOC interacted with episode size to predict whether a correct diagnostic conclusion was reached. If the amount consumed during a typical distressing eating episode was only subjectively large compared to objectively large, clinicians were 23.1 times more likely to miss BED than to correctly diagnose it, and they were 9.7 times more likely to incorrectly diagnose something else than to correctly diagnose BED. In addition, clinicians were 10.8 times more likely to make a false positive diagnosis of BED when no LOC was described if the episode was objectively large. Descriptions of LOC that were reliably associated with correct diagnoses across episodes sizes included two that are similar to those already included in proposed ICD-11 guidelines and a third that is not. This third description of LOC focuses on giving up attempts to control eating because perceived overeating feels inevitable.

CONCLUSIONS

Results highlight the importance of detailed clarification of the LOC construct in future guidelines. Explicitly distinguishing LOC from distressing and mindless overeating could help promote consistent and accurate diagnosis of BED versus another or no eating disorder.

A Systematic Review Of Implicit Attitudes And Their Neural Correlates In Eating Behaviour

An increasing number of studies suggests that implicit attitudes toward food and body shape predict eating behaviour and characterize patients with eating disorders (EDs). However, literature has not been previously analysed, thus differences between patients with EDs and healthy controls and the level of automaticity of the processes involved in implicit attitudes are still matters of debate. The present systematic review aimed to synthetize current evidence from papers investigating implicit attitudes towards food and body in healthy and EDs populations. PubMed, EMBASE (Ovid), PsycINFO, Web of Science and Scopus were systematically screened and 183 studies using different indirect paradigms were included in the qualitative analysis. The majority of studies reported negative attitudes towards overweight/obese body images in healthy and EDs samples and weight bias as a diffuse stereotypical evaluation. Implicit food attitudes are consistently reported as valid predictors of eating behaviour. Few studies on the neurobiological correlates showed neurostimulation effects on implicit attitudes, but the automaticity at brain level of implicit evaluations remains an open area of research. In conclusion, implicit attitudes are relevant measures of eating behaviour in healthy and clinical settings, although evidence about their neural correlates is limited.

Emotion regulation difficulties interact with negative, not positive, emotional eating to strengthen relationships with disordered eating: An exploratory study

Disordered eating includes core eating disorder symptoms present in diverse populations. The extant literature has focused on associations between negative emotional eating and disordered eating to the exclusion of positive emotional eating. Emotion regulation may help explain relationships between emotional eating and disordered eating. Emotion regulation difficulties was examined as a moderator of relationships between negative and positive emotional eating and disordered eating including dietary restraint, eating, weight, and shape concerns, and global scores of disordered eating, a general index of disordered eating. A cross-sectional study was employed using a university student population in the United States. Participants completed surveys assessing negative (Dutch Eating Behavior Questionnaire; Emotional Appetite Questionnaire) and positive (Emotional Appetite Questionnaire) emotional eating, emotion regulation (Difficulties in Emotion Regulation Scale), and disordered eating (Eating Disorder Examination Questionnaire). Moderation analyses were calculated with emotion regulation difficulties as the moderator of relationships between negative and positive emotional eating and disordered eating. Across two separate measures of negative emotional eating, higher negative emotional eating was associated with higher weight concerns and global scores of disordered eating when emotion regulation difficulties was average and increased (+1 SD above average). Higher positive emotional eating was associated with lower dietary restraint and global scores of disordered eating when emotion regulation difficulties was decreased (-1 SD below average). Emotion regulation difficulties strengthened relationships between negative, not positive, emotional eating and disordered eating. Research and clinical implications for the contribution of emotional eating and emotion regulation on disordered eating were discussed.

Social vulnerabilities as risk factor of childhood obesity development and their role in prevention programs

INTRODUCTION

Large socioeconomic, gender, and ethnic inequalities exist in terms of childhood obesity worldwide. Children from low socioeconomic status families are more likely to have overweight/obesity and related cardiometabolic problems and future cancer risk. A wider concept are social vulnerabilities defined as social or economic characteristics or experiences negatively affecting children through behavioral, biological factors, or mental health. Social vulnerabilities include also therefore low subjective perceptions of social position.

OBJECTIVE

This study aims to identify social vulnerabilities and to summarize their impact as obesity development risk factor. Preventive programs implemented targeting these vulnerable groups and their effectiveness are also discussed.

METHODS

Literature review based on the experience of the authors social vulnerabilities identified as risk factors for childhood obesity were children whose parents lack of a social network, low support from formal and informal sources, parental unemployment, belonging to a minority group or having migrant background, adverse childhood experiences including household dysfunction, violence and childhood maltreatment and other traumatic experiences, gender inequalities and being part of nontraditional families.

RESULTS

The impact of social vulnerabilities on childhood obesity is independent of SES; however, SES exacerbates or buffer the effect social vulnerabilities have on different lifestyles and stress. Behavioral, biological, and mental health mechanisms may explain the association between social vulnerabilities and childhood obesity.

CONCLUSIONS

Behaviors such as dietary intake, physical activity, sedentary behaviors, and sleep are negatively affected by the stress and low levels of mental health derived from social vulnerabilities. It seems that high energy intakes rather than low physical activity levels might be the main driving force behind the obesity epidemic in vulnerable groups. Most of the prevention programs identified did not take into account social vulnerabilities and inequalities making them ineffective in most vulnerable groups. Interventions conducted in children from socially vulnerable group suggest modest but promising effects.

The association of adverse life events with children's emotional overeating and restrained eating in a population-based cohort

OBJECTIVE

Life adversities are recognized risk factors for eating disorders, in adolescents and adults, but whether such adversities are also associated with particular eating behaviors earlier in life is still unclear. Our aim was to assess whether experiencing adverse life events in early childhood is associated with emotional overeating and restrained eating at age 10.

METHODS

Emotional overeating and restrained eating were assessed in 4,653 10-years-old children using the mother-reported Children's Eating Behavior Questionnaire and Dutch Eating Behavior Questionnaire. Mothers also reported on 24 different life events during childhood, those with moderate or severe impact being categorized as adverse life events. Regression analyses were performed to investigate relationships between adverse life events and eating behaviors in the total sample.

RESULTS

Adjusted for covariates, adverse life events were associated with more emotional overeating and restrained eating in children (p-values for trend <.01). Specifically, mothers who reported that their child experienced 3+ adverse life events, also reported significantly higher emotional overeating (B = 0.20; 95% confidence interval [CI], 0.06-0.33) and restrained eating (B = 0.21; 95% CI, 0.08-0.33) in their children relative to children who did not experience adverse life events. These results did not differ by sex.

DISCUSSION

Our results based on mother-reported data suggest that children's experiences of life adversities are associated with emotional overeating and restrained eating at age 10 years. We recommend future prospective studies using multi-informant assessments of both adverse life events and eating behaviors to further describe the nature and developmental course of this relationship.

Hospitalization following eating disorder diagnosis: The buffering effect of marriage and childbearing events

Eating Disorders (ED) are defined as abnormal eating behaviors, stemming from an obsession with food, body weight, or body shape. EDs affect 10 million men and 20 million women in the US, with an estimated 15% lifetime prevalence among women. An ED diagnosis is often accompanied with a host of adverse physical and mental health outcomes, including a heightened risk for suicidality. Given the complex comorbidities associated with EDs, treatment occurs in inpatient and outpatient settings. This study used linked administrative and health records from the Utah Population Database to create a cohort of women n = 4183 and men n = 423 who had a known diagnosis of ED between 1995 and 2015. Cox proportional hazard regression was used to model ED-related hospitalization trajectories, including subsequent risk for suicidality/self-injurious behavior-related hospitalization. To better estimate the risk profiles associated with different health care utilization patterns, models explored how family-related life course events (childbirth, marriage transitions) and sociodemographic characteristics (race, sex, and median income at census-block) modify hospitalization trajectories following initial diagnosis. Results suggested that increased outpatient treatment was associated with reduced risk of initial ED-related hospitalization, but higher risk for subsequent ED-related hospital readmission. In addition, transition to marriage (i.e., getting married) was associated with reduced risk of ED-related and suicidality/self-injurious behavior-related hospitalizations (initial hospitalization and subsequent readmission). Increased number of children was only associated with reduced risk of initial ED-hospitalization, but not readmission. When assessing individuals' risk for ED-related hospitalizations, social and health services researchers should contextualize treatment trajectories within the individual's life experiences, particularly marital transitions, while simultaneously considering sociodemographic characteristics and utilization of outpatient care. Future research should further examine whether marriage represents an important turning point in the health trajectories of individuals with EDs.

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Childbearing reduces risk of initial eating disorder hospitalization.

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Marriage reduces risk of eating disorder hospitalization and readmission.

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Marriage reduces risk of suicidality hospitalization for persons with prior eating disorder.

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Higher outpatient treatment reduces risk of initial eating disorder hospitalization.

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Higher outpatient treatment increases risk of eating disorder hospital readmission.

Implicit bias of encoded variables: frameworks for addressing structured bias in EHR-GWAS data

The 'discovery' stage of genome-wide association studies required amassing large, homogeneous cohorts. In order to attain clinically useful insights, we must now consider the presentation of disease within our clinics and, by extension, within our medical records. Large-scale use of electronic health record (EHR) data can help to understand phenotypes in a scalable manner, incorporating lifelong and whole-phenome context. However, extending analyses to incorporate EHR and biobank-based analyses will require careful consideration of phenotype definition. Judgements and clinical decisions that occur 'outside' the system inevitably contain some degree of bias and become encoded in EHR data. Any algorithmic approach to phenotypic characterization that assumes non-biased variables will generate compounded biased conclusions. Here, we discuss and illustrate potential biases inherent within EHR analyses, how these may be compounded across time and suggest frameworks for large-scale phenotypic analysis to minimize and uncover encoded bias.

The Risk of Substance Use Among Adolescents and Adults With Eating Disorders

Eating disorders (EDs) are negative eating habits that have harmful mental and physical effects. EDs primarily affect young women. Most cases are diagnosed in adolescence. The most common EDs are bulimia nervosa (BN), anorexia nervosa (AN), and binge eating disorder (BED). There is a strong association between EDs and substance use disorder (SUD) in adolescence. Bulimia nervosa and alcohol use disorder (AUD) are the most common co-occurrence. There is a high behavioral association between EDs and AUD. Alcohol consumption could be a primary trigger for binge eating in women with BN. Alcohol can be used as an appetite suppressor and as a compensatory behavior to avoid food.

The objective of this literature review was to explore the relation between EDs and SUD. The results of the study showed SUD is common with EDs. There are many reasons for this association such as shared neurobiological mechanisms, personality features, environmental and genetic factors. 

Body image and body change behaviors associated with orthorexia symptoms in males

In recent years, Orthorexia Nervosa has received increasing attention as a form of restrictive disordered eating driven by concerns related to "healthy eating" as opposed to weight and shape concerns. To date, however, data on the correlates of orthorexia in men are lacking, particularly pertaining to the relationship between orthorexia and muscularity-related dimensions. A sample of 103 (M_age = 19.84) male college students completed an online questionnaire reporting on orthorexia symptoms, eating pathology, drive for muscularity, exercise dependence, and internalization of the thin and athletic ideals. Correlational analyses and linear regression models were used to explore relationships between orthorexia and variables of interest. Findings revealed positive relationships between high levels of orthorexia symptoms and eating pathology, exercise dependence, thin and athletic internalization, and behavioral dimensions of drive for muscularity. The results of this study extend our understanding of the correlates of orthorexia symptoms among young men and highlight their association with other dimensions of eating pathology as well as dysfunctional exercise. In addition, concerns related to healthiness may overlap with muscularity-related concerns, perhaps due to the conflation between health and muscular appearance in social constructions of male body ideals.

Emotional instability as a trait risk factor for eating disorder behaviors in adolescents: Sex differences in a large-scale prospective study

BACKGROUND

Temperament and personality traits, including negative emotionality/neuroticism, may represent risk factors for eating disorders. Further, risk factors may differ by sex. We examined longitudinal temperament/personality pathways of risk for purging and binge eating in youth stratified by sex using data from a large-scale prospective study.

METHODS

Temperament, borderline personality features, sensation seeking, 'big five' personality factors, and depressive symptoms were measured at five time points from early childhood to adolescence in 5812 adolescents (3215 females; 2597 males) in the Avon Longitudinal Study of Parents and Children. We conducted univariate analyses with these predictors of binge eating and purging at 14 and 16 years for total and sex-stratified samples. We used structural equation modeling (SEM) to fit data to a path analysis model of hypothesized associations.

RESULTS

Of the total sample, 12.54% engaged in binge eating and 7.05% in purging by 16 years. Prevalence was much greater and increased dramatically for females from 14 years (7.50% binge eating; 2.40% purging) to 16 years (15.80% binge eating; 9.50% purging). For both sexes, borderline personality, depressive symptoms and lower emotional stability predicted eating disorder behaviors; sensation seeking and conscientiousness were also significant predictors for females. SEM identified an 'emotional instability' pathway for females from early childhood into adolescence (RMSEA = 0.025, TLI = 0.937 and CFI = 0.970).

CONCLUSIONS

Binge eating and purging are common in female and male adolescents. Early temperament/personality factors related to difficulty regulating emotions were predictive of later adolescent eating disorder behaviors. Results have important clinical implications for eating disorder prevention and intervention.

Risk factors and temporal patterns of disordered eating differ in adolescent boys and girls: Testing gender-specific appearance anxiety models

Adolescent dieting and disordered eating (DE) are risks for clinical eating disorders. In this five-wave longitudinal study, we tested gender-specific models linking early risk factors to temporal patterns of DE, considering appearance anxiety as a mediator. Participants were 384 Australian students (age 10 to 13; 45% boys) who reported their purging and skipping meals, experience with appearance-related teasing, media pressure, and appearance anxiety. Parents reported pubertal maturation and height/weight was measured. Gender differences in temporal patterns of DE were found and predictive models were tested using latent-variable growth curve and path models. Boys’ DE was generally stable over time; girls showed stability in purging but an average increase in skipping meals. Peer teasing, media pressure, and pubertal maturation were associated with more elevated initial DE in girls, and pubertal maturation was associated with a steeper increase in DE. For boys, body mass index had a direct positive association with DE. Appearance anxiety was associated with more DE, but there was only one significant indirect effect via anxiety, which was for boys’ pubertal maturation. Findings support the dominant role of social interactions and messages, as well as pubertal maturation, for girls’ DE and the prominence of physical risk factors for explaining boys’ DE.

An empirically derived recommendation for the classification of body dysmorphic disorder: Findings from structural equation modeling

Body dysmorphic disorder (BDD), together with its subtype muscle dysmorphia (MD), has been relocated from the Somatoform Disorders category in the DSM-IV to the newly created Obsessive-Compulsive and Related Disorders category in the DSM-5. Both categorizations have been criticized, and an empirically derived classification of BDD is lacking. A community sample of N = 736 participants completed an online survey assessing different psychopathologies. Using a structural equation modeling approach, six theoretically derived models, which differed in their allocation of BDD symptoms to various factors (i.e. general psychopathology, somatoform, obsessive-compulsive and related disorders, affective, body image, and BDD model) were tested in the full sample and in a restricted sample (n = 465) which indicated primary concerns other than shape and weight. Furthermore, measurement invariance across gender was examined. Of the six models, only the body image model showed a good fit (CFI = 0.972, RMSEA = 0.049, SRMR = 0.027, TLI = 0.959), and yielded better AIC and BIC indices than the competing models. Analyses in the restricted sample replicated these findings. Analyses of measurement invariance of the body image model showed partial metric invariance across gender. The findings suggest that a body image model provides the best fit for the classification of BDD and MD. This is in line with previous studies showing strong similarities between eating disorders and BDD, including MD. Measurement invariance across gender indicates a comparable presentation and comorbid structure of BDD in males and females, which also corresponds to the equal prevalence rates of BDD across gender.

Meta-analysis of gender differences in body appreciation

There are a number of studies that have conducted comparisons of body appreciation between males and females. However, findings are largely inconsistent, making it unclear whether there are actual gender differences in body appreciation. With a meta-analytic approach, the current study quantitatively reviewed and synthesized previous findings, published up to May 2019, on gender differences in body appreciation. After searching and screening potential studies in four databases (i.e., PubMed, PsycINFO, Web of Science, and ProQuest Dissertations & Theses Global), we identified 40 relevant articles published from 2008 to 2019. A random-effects model reveals an overall estimate of gender difference in body appreciation of d = 0.27 (95 % CI: 0.21, 0.33; p <  .001); that is, males generally have a higher level of body appreciation than females, with a small effect size. Survey method, type of sample (cohorts), and age were identified as significant moderators that have contributed to the variability in previous findings. Future research and interventions in body appreciation may consider gender differences in their designs.

Evaluation of the reliability and validity of the Italian version of the schema mode inventory for eating disorders: short form for adults with dysfunctional eating behaviors

PURPOSE

To examine the psychometric properties and the factorial structure of the Italian version of the schema mode inventory for eating disorders-short form (SMI-ED-SF) for adults with dysfunctional eating patterns.

METHODS

649 participants (72.1% females) completed the 64-item Italian version of the SMI-ED-SF and the eating disorder examination questionnaire (EDE-Q) for measuring eating disorder symptoms. Psychometric testing included confirmatory factor analysis (CFA) and internal consistency. Multivariate analysis of covariance (MANCOVA) was also run to test statistical differences between the EDE-Q subscales on the SMI-ED-SF modes, while controlling for possible confounding variables.

RESULTS

Factorial analysis confirmed the 16-factors structure for the SMI-ED-SF [S-Bχ² (1832) = 3324.799; p < .001; RMSEA = 0.045; 90% CI 0.043-0.048; CFI = 0.880; SRMR = 0.066; χ^2/df = 1.81; < 3]. Internal consistency was acceptable in all scales, with Cronbach's Alpha coefficients ranging from 0.635 to 0.873.

CONCLUSIONS

The SMI-ED-SF represents a reliable and valid alternative to the long-form SMI-ED for assessment and conceptualization of schema modes in Italian adults with disordered eating habits. Its use is recommended for clinical and research purposes.

LEVEL OF EVIDENCE

Level V, descriptive study.

Appetite, the enteroendocrine system, gastrointestinal disease and obesity

The enteroendocrine system is located in the gastrointestinal (GI) tract, and makes up the largest endocrine system in the human body. Despite that, its roles and functions remain incompletely understood. Gut regulatory peptides are the main products of enteroendocrine cells, and play an integral role in the digestion and absorption of nutrients through their effect on intestinal secretions and gut motility. Several peptides, such as cholecystokinin, polypeptide YY and glucagon-like peptide-1, have traditionally been reported to suppress appetite following food intake, so-called satiety hormones. In this review, we propose that, in the healthy individual, this system to regulate appetite does not play a dominant role in normal food intake regulation, and that there is insufficient evidence to wholly link postprandial endogenous gut peptides with appetite-related behaviours. Instead, or additionally, top-down, hedonic drive and neurocognitive factors may have more of an impact on food intake. In GI disease however, supraphysiological levels of these hormones may have more of an impact on appetite regulation as well as contributing to other unpleasant abdominal symptoms, potentially as part of an innate response to injury. Further work is required to better understand the mechanisms involved in appetite control and unlock the therapeutic potential offered by the enteroendocrine system in GI disease and obesity.

[Cross-cultural adaptation of the Sociocultural Attitudes Towards Appearance Scale-4 (SATAQ-4) applied to university students]

The aim of this study was to translate and culturally adapt the Sociocultural Attitudes Towards Appearance Scale-4 (SATAQ-4) to the Portuguese language and assess its validity and reliability when applied to Brazilian students. Face, content, and pretest validity were assessed. In order to assess the levels of misunderstanding, a pretest was performed with 91 students from three Portuguese-speaking countries (25 Brazilians, 37 Portuguese, and 29 Mozambicans). Construct validity was estimated using a confirmatory strategy with chi-square by degrees of freedom ratio (χ²/df), comparative fit index (CFI), Tucker-Lewis index (TLI), and root mean square error of approximation (RMSEA). The reliability was estimated. Invariance was estimated for independent samples, for sex and presence/absence of overweight/obesity. Students participating in the pretest understood all the items in SATAQ-4. Participation in the main study included 1,051 Brazilian university students (age = 20.9 years (SD = 2.4), 66.4% women). SATAQ-4 presented adequate validity (χ²/df = 8.39; CFI = 0.98, TLI = 0.98, RMSEA = 0.08) and reliability (Cronbach's alpha = 0.84-0.95) in the sample. The model showed invariance between independent samples and was not invariant according to sex or presence/absence of overweight/obesity. In conclusion, SATAQ-4 is a valid and reliable instrument for a sample of Brazilian university students, as an alternative for assessing sociocultural attitudes towards appearance in this population.

Body-related discrimination and dieting and substance use behaviors in adolescence

Unfair treatment on the basis of a physical characteristic, such as body weight, is associated with unhealthy dieting behaviors in adolescence and adulthood and has also been implicated in substance use. Peer victimization is likewise associated with these health-risk behaviors. It is unclear, however, whether body discrimination is associated with these behaviors independent of peer victimization. The present research uses data from the Longitudinal Study of Australian Children (LSAC) to test the relation between body discrimination and dieting and substance use behaviors in adolescence and test whether the associations are independent of peer victimization, as well as depressive symptoms which are associated with both forms of victimization and health-risk behaviors. Participants (N = 2955) reported on body discrimination, dieting behaviors, and substance use at ages 14-15. Participants who experienced body discrimination were more likely to report fear of gaining weight, losing control over eating, going without eating, using medicine or vomiting to control their weight, engaging in restrained eating, and exercising to control their weight. They also had tried nicotine, alcohol, and marijuana. The associations with eating and alcohol use were independent of peer victimization, whereas the associations with smoking and marijuana were reduced when peer victimization was included in the model. All associations were also independent of depressive symptoms. Overall, the findings suggest that body discrimination is associated with harmful health behaviors at least as early as age 14.

Adolescent stress: A predictor of dieting behaviors in youth with overweight/obesity

OBJECTIVE

To examine associations between psychological stress and dieting behavior along with the heterogeneity of this association by gender and race in a diverse sample of adolescents with overweight/obesity.

METHODS

One hundred and sixty-one adolescents between the ages of 13-19 years of age with overweight/obesity (65% female; 53% non-Hispanic black/47% non-Hispanic white; age: 16.7 ± 1.7 years) were recruited from Southeast MI and included in this analysis. Psychological stress was measured using the Perceived Stress Scale, and dieting behavior was assessed using the dieting subscale from the Eating Attitudes Test (EAT-26) questionnaire. Multivariable linear regression models were conducted to examine the association between psychological stress and dieting behavior by gender and race.

RESULTS

Psychological stress was significantly associated with dieting (β = 0.18 ± 0.06; p < 0.01), with greater stress associated with greater frequency of dieting behavior. This relationship remained significant (β = 0.15 ± 0.06; p = 0.016), even when controlling for covariates (age, body fat, gender, race, and pubertal development). There were no statistically significant differences in the association of psychological stress and disordered eating indices by gender or race/ethnicity (p's > 0.05).

CONCLUSIONS

Increased psychological stress is associated with increased dieting behavior among adolescents with overweight/obesity. These findings suggest that psychological stress equally affects dieting behavior among adolescents with overweight/obesity, regardless of gender and race. Future studies should seek to identify the unique sources of psychological stress that contribute to increased dieting behavior among adolescents with overweight/obesity.

Prevalence, correlates and comorbidities of feeding and eating disorders in a nationally representative sample of Iranian children and adolescents

OBJECTIVE

This study investigated the prevalence of feeding and eating disorders, and identified their correlates and comorbidities among children and adolescents.

METHOD

We used the nationally representative sample of the Iranian Children and Adolescents' Psychiatric disorders (IRCAP) survey, with 30,532 participants randomly selected by a multistage cluster sampling method. We employed the kiddie schedule for affective disorders and schizophrenia-present and lifetime version (K-SADS-PL) semi-structured face-to-face interview to screen for any psychiatric disorders, including feeding and eating disorders, and associated factors. We used multivariate binary logistic regression to analyze the data.

RESULTS

Valid data from 27,111 participants were analyzed. The total prevalence of feeding and eating disorders among children and adolescents was 0.89 (0.81-1.10). In all types of feeding and eating disorders, the adjusted odds ratio was higher among girls (except binge-eating disorder) and older adolescents but was lower among rural residents. The most common psychiatric comorbidities observed in children and adolescents with feeding and eating disorders were obsessive-compulsive disorder (20.2%), agoraphobia (20.2%), depressive disorder (16.4%), social phobia (10.1%), oppositional defiant disorder (10.1%), generalized anxiety disorder (9.4%), attention deficit hyperactivity disorder (7.5%), and conduct disorder (5.7%), which were significantly more common compared to their peers without feeding and eating disorders.

DISCUSSION

Older age, female gender and living in an urban area are predisposing factors in feeding and eating disorders (in binge-eating disorder, the male gender is a positive correlate). We suggest that future works pay attention to the role of gender, comorbidities and predisposing factors.

Body Dissatisfaction, Restrictive, and Bulimic Behaviours Among Young Women: A Polish-Japanese Comparison

The growing number of women, who are characterized by restrictive and bulimic behaviours towards their own body is observed especially in countries influenced by Westernalization. However, there is a lack of cross-cultural studies in this area. The main aim of the present study was to examine the psychological and socio-cultural risk factors for eating disorders in Polish and Japanese women. A cross-sectional research study was conducted among 18- to 29-year old Polish (n = 89) and Japanese (n = 97) women. The variables were measured using the Sociocultural Attitudes Towards Appearance Scale SATAQ-3, and the Eating Disorders Inventory EDI-3. The descriptive and comparative statistics, Spearman's rho, and the stepwise regression analysis were used. The global internalization of socio-cultural standards of body image proved to be a significant predictor of Body Dissatisfaction among Polish and Japanese women. The main analysis showed a significant relation between the Drive for Thinness and Interoceptive Deficits in the group of Japanese women, as well as a correlation between Drive for Thinness and Asceticism in the group of Polish women. The obtained results could improve the prevention aimed the dysfunctional eating behaviours. However, the cultural nuances need to be considered in understanding the risk factors for eating disorders.

Impulsivity influences food intake in women with generalized anxiety disorder

Objective:

Eating behavior is affected by psychological and neurocognitive factors. However, little is known about this relationship in anxious patients. Our aim was to investigate the associations between impulsivity, inhibitory control, energy-dense food consumption, and body mass index (BMI) in women with generalized anxiety disorder (GAD).

Methods:

In this cross-sectional study, 51 adult females with GAD answered the Barratt Impulsiveness Scale (BIS-11) and participated in a go/no-go task using food images. Anthropometric measurements were evaluated. A food frequency questionnaire and a snack test were used to study eating behavior. Pearson correlation and multiple linear regression were performed to analyze the variables of interest, adjusted by age.

Results:

Impulsivity predicted intake of sugar (p = 0.016, 95%CI 0.67-6.05), total fat (p = 0.007, 95%CI 0.62-3.71), and saturated fat (p = 0.004, 95%CI 0.30-1.48). The snack test showed a positive correlation between presence of impulsivity and intake of biscuits (R = 0.296; p = 0.051). Response inhibition to food images in the go/no-go task paradigm did not predict BMI or food intake.

Conclusion:

Impulsivity was predictive of higher sugar and saturated fat intake in women diagnosed with GAD. Our findings add to the literature regarding the association between neuropsychological factors and food consumption in this specific population.

Low body mass and ethnic identity exploration exacerbate the association between body image concerns and loss of control eating in Hispanic/Latino men

OBJECTIVE

Although Hispanic/Latino populations have some of the highest rates of obesity in the United States, little is known about their loss of control (LOC) eating, a robust predictor of excess weight gain. This study examined the association between body image concerns and LOC eating frequency in a sample of young Hispanic/Latino men. Body mass index (BMI), ethnic identity, and acculturation were examined as potential moderators.

METHOD

The sample included 271 Hispanic/Latino men between the ages of 18 and 30 years (M_age = 23.89 ± 3.54; M_BMI = 26.46 ± 5.82). Participants completed an online survey and reported on height, weight, and demographic characteristics; concerns with muscularity and body fat; LOC eating frequency in the last 28 days; ethnic identity; and perceived acculturation.

RESULTS

Negative binomial regression models were conducted, adjusting for BMI, income, education, and presence of a psychiatric diagnosis. Concerns with muscularity and body fat were positively associated with LOC eating frequency (ps < .001). Low BMI exacerbated the link between concerns with body fat and LOC eating frequency (p = .03). The positive association between concerns with muscularity and LOC eating frequency was exacerbated among those who reported low ethnic identity exploration (p = .01). While acculturation did not function as a moderator (ps = .14-.27), it was inversely associated with LOC eating frequency (p < .001).

DISCUSSION

BMI and ethnic identity are important individual factors to consider in the link between body image concerns and LOC eating among young Hispanic/Latino men.

Dieting for weight-control among older adults: The role of perceived health and perceived overweight status

BACKGROUND

Despite the ever-growing literature on weight-control diets, data about dieting among older adults are scarce.

PURPOSE

To describe the prevalence of weight-control dieting across age groups and weight statuses (from healthy-weight to overweight and obese). To identify cross-sectional associations of perceived health and perceived overweight status with dieting among older adults.

METHODS

Secondary analyses of the second and third waves of the Midlife in the US study (MIDUS). Sample included 2588 participants (40-93 years old, 54.5% females, age = 64.4 ± 11.1 years, BMI = 28.3 ± 5.9 kg/m²). Logistic regressions were used to predict dieting across age groups (independent variables: BMI, perceived health, perceived overweight status; covariates: BMI change, education, age, race).

RESULTS

As many as 15% of participants had reported dieting during the previous year. Older age was associated with less dieting among healthy weight (p = .02) and overweight (p < .001) participants, but not among participants with obesity (p = .36). Among participants younger than 75, overweight perception (vs. healthy-weight perception) was linked with higher likelihood for dieting (40-55 years: OR = 3.94[1.70-9.1]; 55-65 years: OR = 4.11[1.91-8.82]; 65-75 years: OR = 4.50[1.90-10.65]). Nevertheless, among participants older than 75, excellent (vs. good/fair/poor) perceived health was linked with higher likelihood of dieting (good vs. excellent: OR = 0.29[0.09-0.87]; fair/poor vs. excellent: OR = 0.12[0.03-0.54]).

CONCLUSIONS

Older age is associated with less weight-control dieting among people without obesity. Although overweight perception may have a stronger impact on dieting during younger age, health perception may have a stronger impact on dieting during older age, suggesting that the motivation behind weight-control diets may potentially change throughout the adult lifespan.

Adolescent Obesity: Diet Quality, Psychosocial Health, and Cardiometabolic Risk Factors

Obesity is a multifaceted chronic condition with several contributing causes, including biological risk factors, socioeconomic status, health literacy, and numerous environmental influences. Of particular concern are the increasing rates of obesity in children and adolescents, as rates of obesity in youth in the United States have tripled within the last three decades. Youth from historically disadvantaged backgrounds tend to have higher rates of obesity compared to other groups. Adolescents often do not meet intake recommendations for certain food groups and nutrients, which may contribute to a heightened risk of obesity. With obesity disproportionately affecting adolescents (ages 12–19 years), negative effects of excess adiposity may be particularly salient during this critical period of development. The presentation of chronic cardiometabolic disease symptoms typically observed in adults, such as hypertension, hyperglycemia, dyslipidemia, and inflammation, are becoming increasingly common in adolescents with obesity. Additionally, there is dynamic interplay between obesity and psychosocial health, as adolescents with obesity may have increased levels of stress, depressive symptoms, and reduced resilience. To reduce and prevent adolescent obesity, the implementation of theory-driven multicomponent school- and community-based interventions have been suggested. These interventions promote knowledge and self-efficacy for healthful practices that have the potential to progress to sustained behavior change.

Evidence for a sex-specific contribution of polygenic load for anorexia nervosa to body weight and prefrontal brain structure in nonclinical individuals

Genetic predisposition and brain structural abnormalities have been shown to be involved in the biological underpinnings of anorexia nervosa (AN). Prefrontal brain regions are suggested to contribute through behavioral inhibition mechanisms to body weight. However, it is unknown if and to which extent biological correlates for AN might be present in individuals without clinical AN symptomatology. We therefore investigated the contribution of polygenic load for AN on body weight and prefrontal brain structure in a sample of n = 380 nonclinical individuals. A polygenic score (PGS) reflecting the individual genetic load for the trait of anorexia nervosa was calculated. Structural MRI data were acquired and preprocessed using the cortical parcellation stream of FreeSurfer. We observed a significant PGS × sex interaction effect on body mass index (BMI), which was driven by a negative correlation between PGS and BMI in female participants. Imaging analyses revealed significant interaction effects of sex  × PGS on surface area of the lateral orbitofrontal cortex (OFC), the pars orbitalis (PO), the rostral middle frontal gyrus (RMF) and the pars triangularis (PT) of the left frontal cortex. The interaction effects were driven by positive correlations between PGS and prefrontal surface areas in female participants and negative correlations in male participants. We furthermore found sex-specific associations between BMI and left RMF surface area as well as between BMI and left PO and left RMF thickness. Our findings demonstrate a sex-specific association between polygenic load for AN, BMI, and prefrontal brain structure in nonclinical individuals. Hence, this study identifies structural abnormalities associated with polygenic load for AN and BMI in brain regions deeply involved in behavioral inhibition and impulse regulation as candidate brain regions for future research.

Predictors of muscularity-oriented disordered eating behaviors in U.S. young adults: A prospective cohort study

OBJECTIVE

To determine adolescent predictors of muscularity-oriented disordered eating behaviors in young men and women using a nationally representative longitudinal sample in the United States and to examine differences by sex.

METHOD

We used nationally representative longitudinal cohort data collected from baseline (11-18 years old, 1994-1995) and 7-year follow-up (18-24 years old, 2001-2002) of the National Longitudinal Study of Adolescent to Adult Health. We examined adolescent demographic, behavioral, and mental health predictors of young adult muscularity-oriented disordered eating behaviors defined as eating more or differently to gain weight or bulk up, supplements to gain weight or bulk up, or androgenic anabolic steroid use at 7-year follow-up.

RESULTS

Of the 14,891 included participants, 22% of males and 5% of females reported any muscularity-oriented disordered eating behavior at follow-up in young adulthood. Factors recorded at adolescence that were prospectively associated with higher odds of muscularity-oriented disordered eating in both sexes included black race, exercising to gain weight, self-perception of being underweight, and lower body mass index z-score. In addition, participation in weightlifting; roller-blading, roller-skating, skate-boarding, or bicycling; and alcohol among males and depressive symptoms among females during adolescence were associated with higher odds of muscularity-oriented disordered eating in young adulthood.

CONCLUSIONS

Interventions to prevent muscularity-oriented disordered eating behaviors may target at-risk youth, particularly those of black race or who engage in exercise to gain weight. Future research should examine longitudinal health outcomes associated with muscularity-oriented disordered eating behaviors.

Pilot study of a personality-based approach to assessing eating disorder and Obsessive Compulsive Disorder symptom risk in college men and women

Objective: To conduct a pilot test of the validity of using empirically derived personality types to characterize eating disorder (ED) risk in college students and resolve discrepancies regarding the role of perfectionism and obsessive-compulsive disorder (OCD) symptoms.Participants: Man and woman undergraduate students (N = 169) at a small, private university. Data were collected from February to May 2016 and 2018. Methods: Participants completed self-report measures of personality (perfectionism, impulsivity, and effortful control) and psychopathology (EDs, OCD). Results: Our analyses replicated three validated personality types: overcontrolled, undercontrolled, and resilient. Analysis of variances demonstrated perfectionism, ED, and OCD symptoms were significantly elevated in the overcontrolled subtype. There was no interaction by sex. Conclusions: These findings suggest that personality types may be useful for classifying ED risk and OCD symptoms in college students across sexes. Further study and relevance to prevention and intervention efforts to reduce the burden of EDs on college campuses will be discussed.

Differential Item Functioning in Brief Instruments of Disordered Eating

Abstract. Most instruments for the assessment of disordered eating were developed and validated in young female samples. However, they are often used in heterogeneous general population samples. Therefore, brief instruments of disordered eating should assess the severity of disordered eating equally well between individuals with different gender, age, body mass index (BMI), and socioeconomic status (SES). Differential item functioning (DIF) of two brief instruments of disordered eating (SCOFF, Eating Attitudes Test [EAT-8]) was modeled in a representative sample of the German population ( N = 2,527) using a multigroup item response theory (IRT) and a multiple-indicator multiple-cause (MIMIC) structural equation model (SEM) approach. No DIF by age was found in both questionnaires. Three items of the EAT-8 showed DIF across gender, indicating that females are more likely to agree than males, given the same severity of disordered eating. One item of the EAT-8 revealed slight DIF by BMI. DIF with respect to the SCOFF seemed to be negligible. Both questionnaires are equally fair across people with different age and SES. The DIF by gender that we found with respect to the EAT-8 as screening instrument may be also reflected in the use of different cutoff values for men and women. In general, both brief instruments assessing disordered eating revealed their strengths and limitations concerning test fairness for different groups.