Changes in disordered eating behaviors over 10 or more years: A meta-analysis

Trajectories of negative affect prior to and following disordered eating behaviors among women with eating disorder pathology: An examination of the role of state-interoception

OBJECTIVE

Affect regulation theories of eating disorders (ED) posit that negative affect increases in the hours before and decreases following disordered eating behaviors (DEBs) in daily life, yet findings from studies assessing affective changes post-DEBs are mixed. This inconsistency may be due to the previously unassessed role of other transdiagnostic processes in these associations, such as interoception (the ability to sense and integrate information from bodily sensations). To address this research gap, the present study examined whether different interoception dimensions moderated negative affect trajectories surrounding DEBs in the natural environment.

METHOD

150 women with ED pathology (Mage = 21.0, SD = 4.1) completed 4 surveys targeting affect and DEBs each day for a 10-day ecological momentary assessment period. Polynomial multilevel models examined negative affect trajectories pre- and post-DEBs (dietary restriction, overeating, loss of control eating), and whether these trajectories varied based on daily interoception dimensions (not distracting, self-regulation, body listening and trust).

RESULTS

Negative affect increased prior to loss of control eating-but not dietary restriction or overeating-and decreased following all DEBs. Further, the magnitude of the decrease in negative affect that emerged post-dietary restriction decreased in strength as daily "not distracting" interoception increased. The other interoception dimensions did not moderate negative affect trajectories surrounding DEBs.

CONCLUSIONS

Allowing oneself to experience (vs. distract from) uncomfortable bodily sensations may weaken affect dysregulation processes that follow dietary restriction in daily life and are theorized to maintain DEBs. These results provide insight that may strengthen EDs theories, research, and inform interoception-focused interventions.

Discordant conceptualisations of eating disorder recovery and their influence on the construct of terminality

Eating disorders (EDs) are complex, multifaceted conditions that significantly impact quality-of-life, often co-occur with multiple medical and psychiatric diagnoses, and are associated with a high risk of medical sequelae and mortality. Fortunately, many people recover even after decades of illness, although there are different conceptualisations of recovery and understandings of how recovery is experienced. Differences in these conceptualisations influence categorisations of ED experiences (e.g., longstanding vs. short-duration EDs), prognoses, recommended treatment pathways, and research into treatment outcomes. Within recent years, the proposal of a 'terminal' illness stage for a subset of individuals with anorexia nervosa and arguments for the prescription of end-of-life pathways for such individuals has ignited debate. Semantic choices are influential in ED care, and it is critical to consider how conceptualisations of illness and recovery and power dynamics influence outcomes and the ED 'staging' discourse. Conceptually, 'terminality' interrelates with understandings of recovery, efficacy of available treatments, iatrogenic harm, and complex co-occurring diagnoses, as well as the functions of an individual's eating disorder, and the personal and symbolic meanings an individual may hold regarding suffering, self-starvation, death, health and life. Our authorship represents a wide range of lived and living experiences of EDs, treatment, and recovery, ranging from longstanding and severe EDs that may meet descriptors of a 'terminal' ED to a variety of definitions of 'recovery'. Our experiences have given rise to a shared motivation to analyse how existing discourses of terminality and recovery, as found in existing research literature and policy, may shape the conceptualisations, beliefs, and actions of individuals with EDs and the healthcare systems that seek to serve them.

Preliminary associations of body weight, weight bias, and dietary restriction with eating disorder diagnosis in women experiencing food insecurity

Understanding the co-occurrence of food insecurity and eating disorders is a pressing concern. Several factors have been hypothesized to increase risk for eating disorders in women with food insecurity including dietary restriction, body weight, and weight-related bias, but few studies have tested these factors simultaneously to determine which are associated most strongly with eating disorder status. We tested cross-sectional associations of dietary restriction, current body mass index (BMI), weight suppression (i.e. the difference between current weight and highest weight), and weight bias with eating disorder diagnosis in a sample of 99 self-identified women with current food insecurity (54% White; mean [SD] age = 40.26 [14.33] years). Participants completed two virtual study visits consisting of electronic questionnaires and interviews. A binary logistic regression model was conducted to test relations between the hypothesized correlates and eating disorder diagnostic status in the past 12 months, controlling for age, food insecurity severity, and body dissatisfaction. Higher levels of weight suppression and weight bias, but not current BMI, were significantly associated with the presence of an eating disorder. Contrary to our hypothesis, greater dietary restriction was associated with lower likelihood of eating disorder diagnosis. Results suggest high levels of weight bias and weight suppression characterize women with food insecurity who meet criteria for an eating disorder. Women who experience food insecurity and have lost a relatively great deal of weight and/or hold biases about high weight should be screened for eating pathology in clinical settings.

Binge-eating adolescent treatment (BEAT) - findings from a pilot study on effects and acceptance of a blended treatment program for youth with loss of control eating

BACKGROUND

Loss of Control Eating (LOC) is the most prevalent form of eating disorder pathology in youth, but research on evidence-based treatment in this group remains scarce. We assessed for the first time the effects and acceptance of a blended treatment program for youth between 14 and 24 years with LOC (Binge-eating Adolescent Treatment, BEAT).

METHODS

Twenty-four youths (mean age 19.1 years) participated in an active treatment of nine-weeks including three face-to-face workshops and six weekly email-guided self-help sessions, followed by four email guided follow-up sessions, one, three, six and 12 months after the active treatment. All patients completed a two-weeks waiting-time period before treatment begin (within-subject waitlist control design).

RESULTS

The number of weekly LOC episodes substantially decreased during both the waiting-time (effect size d = 0.45) and the active treatment (d = 1.01) period and remained stable during the subsequent 12-months follow-up (d = 0.20). The proportion of patients with full-threshold binge-eating disorder (BED) diagnoses decreased and transformed into LOC during the study course, while the abstainer rate of LOC increased. Values for depressive symptoms (d = 1.5), eating disorder pathology (d = 1.29) and appearance-based rejection sensitivity (d = 0.68) all improved on average from pretreatment to posttreatment and remained stable or further improved during follow-up (d between 0.11 and 0.85). Body weight in contrast remained constant within the same period. Treatment satisfaction among completers was high, but so was the dropout rate of 45.8% at the end of the 12-months follow-up.

CONCLUSIONS

This first blended treatment study BEAT might be well suited to decrease core symptoms of LOC, depressive symptoms and appearance-based rejection sensitivity. More research is needed to establish readily accessible interventions targeted more profoundly at age-salient maintaining factors such as appearance-based rejection sensitivity, while at the same time keeping dropout rates at a low level.

TRIAL REGISTRATION

The trial was registered at the German Clinical Trials Register (ID: DRKS00014580; registration date: 21/06/2018).

Twenty-year associations between disordered eating behaviors and sociodemographic features in a multiple cross-sectional sample

BACKGROUND

Disordered eating behaviors (DEB) impact on health and wellbeing worldwide. This study aimed to examine sociodemographic trends in the prevalence of DEB over 20 years in the Australian general population.

METHODS

Data were derived from five sequential cross-sectional surveys (1998, 2008, 2009, 2016 and 2017) with population-representative samples of adults and adolescents residing in South Australia (N = 15 075). DEBs investigated were objective binge eating (OBE), strict dieting/fasting, and purging. Sociodemographic data included gender, age, educational level, work and marital status, and residence.

RESULTS

OBE prevalence increased significantly. Strict dieting/fasting also increased from 1998 to 2008/9 but remained stable between 2008/9 and 2016/7. Purging prevalence did not change significantly over time. All survey years were associated with a significantly higher odds of OBE, and strict diet/fasting compared to 1998. Lower age, a higher Accessibility Remoteness Index of Australia (ARIA) score, higher body mass index (BMI), higher educational attainment, and not being in a married or de facto relationship were independently associated with greater adjusted odds for endorsing OBE. Younger age, female gender, and higher BMI were also independently associated with greater adjusted odds for endorsing strict dieting/fasting.

CONCLUSIONS

The increased prevalence of DEBs in various strata of Australian society has both public health and clinical implications. The results refute the stereotype that eating disorders (EDs) predominantly affect young women. They build impetus for future research on EDs among men and older individuals, with a view to developing tailored public health and clinical interventions for these populations.

Household food insecurity is associated with greater prevalence and 18-month incidence of a range of disordered eating behaviors in a racially and ethnically diverse sample of parents

This study examined cross-sectional and longitudinal associations between household food insecurity (FI) and a range of disordered eating behaviors (DEBs) and explored whether associations differ by Supplemental Nutrition Assistance Program (SNAP)/Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) participation. Data came from 1120 racially/ethnically diverse parents (Mage = 35.7 ± 7.8 years at baseline) in the Family Matters longitudinal cohort study. Parents reported on household FI and SNAP/WIC participation at baseline, and on past-year restrictive weight-control behaviors (WCBs; e.g., fasting), compensatory WCBs (e.g., self-induced vomiting), and binge eating at baseline and 18-month follow-up. Sociodemographics-adjusted modified Poisson regressions examined baseline household FI in relation to baseline prevalence and 18-month incidence (i.e., new onset) of each type of DEB. Moderation by SNAP/WIC participation was also tested. Household FI affected 29.6 % of participants and was associated with significantly greater baseline prevalence (prevalence ratios ranging from 1.38 to 2.69) and 18-month incidence (risk ratios ranging from 1.63 to 2.93) of each type of DEB examined. The association between household FI and incident compensatory WCBs differed significantly by SNAP/WIC participation, such that household FI significantly predicted new-onset compensatory WCBs at follow-up only among those participating in SNAP/WIC. Results from this study are the first, to our knowledge, to demonstrate that FI is longitudinally associated with restrictive and compensatory DEBs, thereby highlighting FI as a risk factor not only for binge eating, but for a range of DEBs. These findings emphasize the importance of screening for FI in clinical settings and the need to address structural barriers to food security.

Parenting styles, maladaptive coping styles, and disturbed eating attitudes and behaviors: a multiple mediation analysis in patients with feeding and eating disorders

Background

Although preliminary studies support the roles of unhealthy parenting styles and maladaptive coping styles in increasing rates of disturbed eating attitudes and behaviors (EAB) and clinically significant feeding and eating disorders (FED), underlying mechanisms have not been well-recognized. This study aims to investigate the factors associated with disturbed EAB and the mediating roles of overcompensation and avoidance coping styles in the relationship between different types of parenting styles and disturbed EAB among patients with FED.

Methods

A total of 102 patients with FED in Zahedan, Iran, participating in this cross-sectional study (from April to March 2022) completed a sociodemographic information form and self-report measures of parenting styles, maladaptive coping styles, and EAB. Model 4 of Hayes' PROCESS macro in SPSS was employed to identify and explain the mechanism or process that underlies an observed relationship between study variables.

Results

The results showed that authoritarian parenting style, overcompensation and avoidance coping styles, and female gender might be related to disturbed EAB. The overall hypothesis that overcompensation and avoidance coping styles mediated the effect of fathers' and mothers' authoritarian parenting styles on disturbed EAB was also supported.

Conclusions

Our findings highlighted the necessity of evaluating particular unhealthy parenting styles and maladaptive coping styles as the important possible risk factors in the development and maintenance of higher level of disturbance in EAB among patients with FED. However, more research is needed to explore individual, family, and peer risk factors for disturbed EAB among these patients.

Changes in the prevalence and sociodemographic correlates of eating disorder symptoms from 2013 to 2020 among a large national sample of U.S. young adults: A repeated cross-sectional study

OBJECTIVE

The present study aimed to: (1) identify recent temporal changes in the prevalence of different cognitive and behavioral eating disorder (ED) symptoms, current probable EDs, lifetime ED diagnoses, and mental healthcare use among college students across the United States; (2) determine whether established disparities in ED prevalence and receiving mental healthcare have widened or narrowed over time for marginalized groups within this population.

METHOD

Participants included a large national sample of U.S. college students (N = 286,720) who completed the repeated cross-sectional Healthy Minds Study from 2013 to 2020. Descriptive statistics and polynomial regressions quantified time-trends in participants' ED symptoms and past 12-month mental healthcare. Moderated regressions examined temporal changes in ED symptoms and mental healthcare based on sociodemographic characteristics.

RESULTS

Individuals' engagement in different cognitive and behavioral ED symptoms, and likelihoods of exhibiting current probable EDs, reporting lifetime ED diagnoses, and (for individuals with current probable EDs) receiving therapy or counseling in the past 12-months exhibited nonlinear increases from 2013 to 2020. Further, the prevalence of current and lifetime ED symptoms and (for symptomatic individuals) past 12-month mental healthcare differed over time for individuals with different BMIs and gender, sexual, and racial/ethnic identities (but not ages). In particular, individuals with higher BMIs and those who identified as male, bisexual, and gay, lesbian, or queer exhibited increasing ED pathology over time.

DISCUSSION

These findings provide important information on groups of U.S. college students that have experienced increasing burden of ED symptoms and may help guide ED prevention, treatment, and research priorities.

PUBLIC SIGNIFICANCE

Recent temporal changes in the prevalence of eating disorder (ED) symptoms and mental healthcare were examined in a national sample of U.S. young adults. Non-linear increases in ED symptoms and mental healthcare were identified among U.S. young adults overall from 2013 to 2020. U.S. young adults with higher BMIs, males, bisexual, and gay, lesbian, or queer individuals exhibited increasing ED burden over time.

Ethnic/racial and gender differences in disordered eating behavior prevalence trajectories among women and men from adolescence into adulthood

BACKGROUND

Disordered eating behaviors (DEB) are highly prevalent and are associated with negative long-term health outcomes. Extant research on DEB prevalence trajectories has predominantly focused on white women, thereby lacking both gender and ethnic/racial diversity, which may lead to preventive interventions that are not optimally timed for socially minoritized groups. The purpose of this study was to identify patterns in DEB trajectories from adolescence to adulthood across intersecting gender and ethnic/racial identities.

METHODS

Participants (n = 1314) were from Project EAT (Eating and Activity in Teens and Young Adults), a population-based sample in the United States. Unhealthy weight control behaviors and binge eating were assessed across four waves at 5-year intervals. Gender-stratified generalized estimating equations (GEE) analyses were applied to examine ethnic/racial and gender differences in the prevalence trajectories of two forms of DEB (unhealthy weight control behaviors and binge eating).

RESULTS

Hispanic/Latina young women reported heightened prevalence of unhealthy weight control behaviors and binge eating during adolescence (82.4% and 31.1%) relative to women with other ethnic/racial identities (44-70.2% and 8.8-18.2%) at any other developmental time point. Black/African American women reported linear increases in unhealthy weight control behaviors from adolescence (46.6%) to adulthood (65.5%), with nearly 20% greater prevalence relative to white women (44.6%) during adulthood. Among men, prevalence of unhealthy weight control behaviors was higher among Hispanic/Latinos (60.7-68.0%) and Asian Americans (41.9-56.7%) relative to Black/African American (24.6-36.9%) and white men (25.7-34.9%). Similarly, Hispanic/Latino young men reported up to ten or more times higher prevalence of binge eating during adolescence (22.8%) and adulthood (26.8%) relative to men from other ethnic/racial identities at any other time point (1.7-12.3%).

CONCLUSIONS

Ethnic/racial disparities in DEB prevalence vary across development, DEB subtype, and by gender. Targeted preventive interventions, or interventions that address these different trajectories, that are optimally timed may reduce these disparities.

Eating Disorder Symptomatology Among Adolescents Presenting for Bariatric Surgery Candidacy: Examining Differences by Sex and Racial Minority Status

BACKGROUND

Research on adolescent bariatric surgery candidates is limited by insufficient inclusion of ethnic minorities and males, and lack of consideration of the full spectrum of disordered eating behaviors (i.e., restriction, compensatory behaviors [e.g., purging], overeating/binge eating behaviors).

OBJECTIVES

The current study investigated differences in the full range of disordered eating behaviors across sex and ethnicity among adolescents seeking bariatric surgery.

SETTING

Teaching hospital, United States.

METHODS

Data were collected using retrospective chart review of 79 adolescent bariatric surgery candidates (59% female, 46.8% Hispanic, MBMI = 50.2, SDBMI = 10.0, Mage = 17.3, SDage = 2.02) who had completed the self-reported Eating Disorder Diagnostic Scale for DSM-5 at intake.

RESULTS

Approximately 33% of study participants met self-reported criteria for an eating disorder, with 35% endorsing binge eating behaviors and 50% endorsing compensatory behaviors. Few differences in behavior frequencies were observed across sex or racial/ethnic status.

CONCLUSIONS

Findings underscore the importance of assessing the full spectrum of disordered eating behaviors among adolescent bariatric surgery candidates.

Examining Race and Gender Differences in Associations Among Body Appreciation, Eudaimonic Psychological Well-Being, and Intuitive Eating and Exercising

PURPOSE

The present study examined race and gender differences among positive psychological constructs, and adaptive eating and exercise behaviors.

DESIGN

Cross-sectional.

SETTING

Online.

SAMPLE

College students (N = 1,228; Mage = 22.27, SD = 5.83).

MEASURES

Participants completed measures assessing positive body image, eudaimonic psychological well-being, and health behaviors.

ANALYSES

Multi-group structural equation modeling was used to examine whether White versus Black race and, separately, woman versus man gender identity moderated associations among body appreciation, eudaimonic psychological well-being, and intuitive eating and intuitive exercising.

RESULTS

Results generally indicated that greater body appreciation was associated with greater eudaimonic psychological well-being (βs = 0.48, 0.56) and, in turn, intuitive eating (βs = -0.20, 0.25) and intuitive exercising (βs = -0.06, 0.23). However, notable variations in this pattern of results were identified based on the facet of intuitive eating and exercising under investigation, and participants' racial identities. For example, greater eudaimonic psychological well-being strictly mediated a positive association between body appreciation and reliance on hunger and satiety cues intuitive eating behaviors among participants who identified as Black (95%CI: 0.01, 0.12), but not White (95%CI: -0.08, 0.04).

CONCLUSIONS

Although the present findings warrant replication using longitudinal designs due to the cross-sectional nature of the present study, these findings suggest that increasing adults' eudaimonic psychological well-being may help improve health-promoting eating and exercise behaviors, and should be assessed as a mechanism of change in future clinical research.

College student attitudes and strategies for intervention with a hypothetical peer exhibiting disordered eating

OBJECTIVE

The present study assesses stigma, attitudes, and strategies of college students in intervening with peers demonstrating disordered eating behaviors.

METHOD

Four hundred and eighty nine college students (384 women) completed questionnaires that assessed eating disorder symptoms and bystander attitudes adapted for disordered eating. Participants read one of three vignettes of a 20-year-old hypothetical peer displaying symptoms of disordered eating aligned with bulimia nervosa, anorexia nervosa, or binge-eating disorder; participants then described whether the vignette subject had a problem, what the problem was, and strategies for intervention. Relationships among eating disorder history, bystander attitudes, demographics, and intention to intervene in disordered eating were assessed using descriptive and regressive analyses; peer intervention strategies were organized and evaluated for frequencies of responses.

RESULTS

Demographics (female-identification) and familiarity with disordered eating were associated with likelihood to intervene in disordered eating. Most students recognized that the peer had a problem, but fewer than half believed the problem was disordered eating; nearly a quarter (22%) of the students stated that they would be uncomfortable talking to a peer about disordered eating. The majority of students cited vague or nonproblem-related intervention strategies (62%), followed by emotion-focused strategies (22.5%), or body and behavior-focused strategies (15%).

DISCUSSION

College students, particularly women and those with previous exposure to eating disorders, are likely to intervene peers disordered eating. However, students tend to use vague or body-focused intervention strategies. Bystander intervention training that provides rationale and rehearsal for supportive communication strategies is needed to address students' lack of intervention skills, particularly among men.

Separating the Signal from the Noise: How Psychiatric Diagnoses Can Help Discern Food Addiction from Dietary Restraint

Converging evidence from both animal and human studies have implicated hedonic eating as a driver of both binge eating and obesity. The construct of food addiction has been used to capture pathological eating across clinical and non-clinical populations. There is an ongoing debate regarding the value of a food addiction "diagnosis" among those with eating disorders such as anorexia nervosa binge/purge-type, bulimia nervosa, and binge eating disorder. Much of the food addiction research in eating disorder populations has failed to account for dietary restraint, which can increase addiction-like eating behaviors and may even lead to false positives. Some have argued that the concept of food addiction does more harm than good by encouraging restrictive approaches to eating. Others have shown that a better understanding of the food addiction model can reduce stigma associated with obesity. What is lacking in the literature is a description of a more comprehensive approach to the assessment of food addiction. This should include consideration of dietary restraint, and the presence of symptoms of other psychiatric disorders (substance use, posttraumatic stress, depressive, anxiety, attention deficit hyperactivity) to guide treatments including nutrition interventions. The purpose of this review is to help clinicians identify the symptoms of food addiction (true positives, or "the signal") from the more classic eating pathology (true negatives, or "restraint") that can potentially elevate food addiction scores (false positives, or "the noise"). Three clinical vignettes are presented, designed to aid with the assessment process, case conceptualization, and treatment strategies. The review summarizes logical steps that clinicians can take to contextualize elevated food addiction scores, even when the use of validated research instruments is not practical.