Relation of BMI and weight suppression to eating pathology in undergraduates

Does suppressing weight improve body satisfaction? A longitudinal analysis in undergraduate men and women

Young adults with high body dissatisfaction may engage in disordered eating to reduce their weight, believing that weight loss will improve body satisfaction. Yet, limited research has examined whether suppressing weight contributes to improved body satisfaction in nonclinical samples. Undergraduate students (N = 661; 81.2% female) completed three surveys over a six-month period. Longitudinal mixed-effect models investigated whether weight suppression was associated with change in body dissatisfaction. Body dissatisfaction was higher on average among women, and greater weight suppression was associated with greater body dissatisfaction across genders. Among women, higher baseline weight suppression was related to higher body dissatisfaction across time; however, neither baseline weight suppression nor change in weight suppression were associated with change in body dissatisfaction. Among men, higher baseline weight suppression was related to increased body dissatisfaction over time. However, greater increases in weight suppression were associated with improvements in body dissatisfaction. Thus, the impact of weight suppression on body image outcomes may differ by gender. Findings suggest that when men become more weight suppressed, their body dissatisfaction decreases; however, changes in weight may not impact body dissatisfaction in women. Findings may inform educational programs challenging diet and weight loss myths, particularly for women.

The prevalence and risk factors of screen-based disordered eating among university students: a global systematic review, meta-analysis, and meta-regression

PURPOSE

The purpose of this review was to estimate the prevalence of screen-based disordered eating (SBDE) and several potential risk factors in university undergraduate students around the world.

METHODS

An electronic search of nine data bases was conducted from the inception of the databases until 1st October 2021. Disordered eating was defined as the percentage of students scoring at or above established cut-offs on validated screening measures. Global data were also analyzed by country, research measure, and culture. Other confounders in this review were age, BMI, and sex.

RESULTS

Using random-effects meta-analysis, the mean estimate of the distribution of effects for the prevalence of SBDE among university students (K = 105, N = 145,629) was [95% CI] = 19.7% [17.9%; 21.6%], I2 = 98.2%, Cochran's Q p value = 0.001. Bayesian meta-analysis produced an estimate of 0.24, 95% credible intervals [0.20, 0.30], τ = 92%. Whether the country in which the students were studying was Western or non-Western did not moderate these effects, but as either the mean BMI of the sample or the percentage of the sample that was female increased, the prevalence of SBDE increased.

CONCLUSIONS

These findings support previous studies indicating that many undergraduate students are struggling with disordered eating or a diagnosable eating disorder, but are neither receiver effective prevention nor accessing accurate diagnosis and available treatment. It is particularly important to develop ever more valid ways of identifying students with high levels of disordered eating and offering them original or culturally appropriate and effective prevention or early treatment.

LEVEL OF EVIDENCE

I, systematic review and meta-analysis.

Traditional versus developmental measures of weight suppression: Exploring their relationships with bulimic psychopathology

OBJECTIVE

Weight suppression (WS) is related to a wide variety of eating disorder characteristics. However, individuals with eating disorders usually reach their highest premorbid weight while still developing physically. Therefore, a more sensitive index of individual differences in highest premorbid weight may be one that compares highest premorbid z-BMI to current z-BMI (called developmental weight suppression [DWS] here).

METHOD

In this exploratory study, we compared the relationships between traditional weight suppression (TWS) and DWS and a variety of measures related to bulimic psychopathology in 91 females (M age, 25.2; 60.5% White), with clinical or sub-clinical bulimia nervosa.

RESULTS

TWS and DWS were correlated (r = 0.40, p < 0.001). TWS was only significantly related to a measure of physical activity whereas DWS was related to 14 outcomes. DWS showed consistent positive relations with behavioural outcomes (e.g., binge eating) but consistent negative relations with cognitive/affective outcomes (e.g., weight concerns).

CONCLUSIONS

Findings indicated much more consistent relationships between the novel DWS measure and bulimic characteristics than with the TWS measure. DWS showed both positive and negative relations with bulimic symptoms, though these findings require replication to confirm their validity. Consistent evidence indicated that the two WS measures served as mutual suppressor variables.

Mapping the abject: Women's embodied experiences of premenstrual body dissatisfaction through body-mapping

Women's body shame and body dissatisfaction increase in the premenstrual phase of the cycle, associated with premenstrual distress. However, the meaning and consequences of premenstrual body dissatisfaction remain underexplored. The aim of this study was to explore how women who report premenstrual body dissatisfaction construct and experience their bodies, using qualitative arts-based methods. Four hundred and sixty women completed online open-ended survey questions and 16 women took part in body-mapping and an interview. Thematic analysis identified three major themes: construction of the premenstrual body as abject, manifested by positioning of the body and self as fat, leaking and dirty; self-policing and self-regulation through increased scrutinising and concealment of the premenstrual body; and resistance of cultural constructions of idealised femininity. These findings emphasise the need to acknowledge changes in body dissatisfaction across the menstrual cycle, and the implication for women's feelings about the self. Internalisation of negative constructions of the female body plays a role in women's experience of premenstrual change and distress. There is a need for further research to examine the role of body management behaviours in premenstrual body dissatisfaction and distress.

Exploring Correlates of Loss of Control Eating in a Nonclinical Sample

Objective

Loss of control (LOC) eating has been directly related to the core aspects of the psychopathology of eating disorders and to different dimensions of emotion and behavior regulation and self-criticism. This study investigates a model representing the interplay between these dimensions to understand LOC eating among a nonclinical sample.

Methods

A total of 341 participants, recruited in a college campus (mean age 23.21, SD = 6.02), completed a set of self-report measures assessing LOC eating, weight suppression, psychopathology of eating disorders, depression, negative urgency, emotion regulation difficulties, and self-criticism. Path analysis modeling tested a hypothesized model with 3 paths for LOC eating as follows: (1) psychopathology of eating disorders; (2) emotion and behavior regulation; and (3) interplay between these paths.

Results

We found goodness-of-fit indexes to our data: χ2 = 17.11, df = 10, Comparative Fit Index (CFI) = 0.99, Tucker-Lewis index (TLI) = 0.98, Root Mean Square Error Approximation (RMSEA) = 0.045, Standardized Root Mean Square Residual (SRMR) = 0.041, suggesting that: (1) participants with higher weight suppression showed higher degrees of the psychopathology of eating disorders, which was linked to higher levels of LOC eating; (2) self-criticism was a mediator between emotion regulation and depression/negative urgency; (3) self-criticism was a mediator between emotion regulation and disorder eating, which was significantly associated with LOC eating via increased negative urgency.

Conclusion

Our model shows that LOC eating occurs for individuals with the psychopathology of higher eating disorders who experience depressive symptoms and act rashly under distress for their inability to cope adequately with negative feelings of self-devaluation. These findings point to the importance of negative self-evaluations and feelings of inadequacy or worthlessness to understand LOC eating among college students.

Associations among weight suppression, self-acceptance, negative body image, and eating disorder behaviors among women with eating disorder symptoms

The present study aimed to clarify existing research that has inconsistently shown that weight suppression (differences between individuals' highest and current body weights) is associated with worse eating disorder (ED) behaviors and negative body image among women with lifetime EDs, by examining whether an understudied client-supported protective factor for ED pathology - self-acceptance - moderates these associations. Currently symptomatic women with lifetime EDs (N = 108) completed measures assessing self-acceptance and ED symptoms via an online survey. Moderated regressions examined whether self-acceptance moderated associations between weight suppression and both body image (weight/shape preoccupation, overvaluation, dissatisfaction) and ED behavior (dietary restraint, compensatory behaviors, binge eating) outcomes. Results indicated that weight suppression was associated with more severe negative body image and dietary restraint, but not compensatory behaviors or binge eating. In contrast, self-acceptance consistently emerged as a protective factor relative to all negative body image and ED behavior indices. This protective effect did not offset apparent risk factor associations between weight suppression, and negative body image and ED behavior outcomes. These results support further assessment of self-acceptance as an understudied protective factor for women's ED symptoms and as a mechanism of change in EDs intervention research. Women's weight suppression should be assessed during ED prevention initiatives.

The Relationship Between SNS Usage and Disordered Eating Behaviors: A Meta-Analysis

Social Networking Sites (SNSs) are common tools with which modern people share their lives and establish social relationships. However, some studies have found SNSs to be associated with eating disorders, although other have identified no connection between the two. To explore the interaction between SNSs and eating disorder behaviors, this study aimed to comprehensively synthesize previous studies using meta-analysis methods. Based on selection criteria, there were 87 effect sizes from 22 studies. After analysis using a three-level random-effects meta-analysis model, a positive correlation between the use of SNSs and irregular eating behaviors was found, r = 0.09 (95% CI: 0.06, 0.11; p < 0.001). In addition, by analyzing potential moderators, body mass index (r = -0.032; 95% CI: -0.058, -0.006; p = 0.019), survey methods, and sample sources was discovered could alter the relationship between SNSs and disordered eating behaviors. Specifically, there was a significantly larger association between SNSs results obtained by paper and pencil surveys and disordered eating behaviors (r = 0.114; 95% CI: 0.081, 0.147; p < 0.001) than that between SNSs results obtained by online surveys and disordered eating behaviors (r = -0.055; 95% CI: -0.102, -0.007; p < 0.01). University students showed a larger correlation between SNSs and disordered eating behavior than other samples (r = 0.089; 95% CI: 0.049, 0.129; p < 0.001). Overall, this meta-analysis confirms that the excessive use of SNSs is associated with an increased risks of disordered eating behaviors. It is hoped that this study can provide a reference for the management and intervention of dietary behaviors related to social networks in the future.

Restrained eating in Lebanese adolescents: scale validation and correlates

BACKGROUND

Restrained eating disorder is prevalent worldwide across both ethnic and different cultural groups, and most importantly within the adolescent population. Additionally, comorbidities of restrained eating present a large burden on both physical and mental health of individuals. Moreover, literature is relatively scarce in Arab countries regarding eating disorders, let alone restrained eating, and among adolescent populations; hence, the aim of this study was to (1) validate the Dutch Restrained Eating Scale in a sample of Lebanese adolescents and (2) assess factors correlated with restrained eating (RE), while taking body dissatisfaction as a moderator between body mass index (BMI) and RE.

METHODS

This cross-sectional study, conducted between May and June 2020 during the lockdown period imposed by the Lebanese government, included 614 adolescents aged between 15 and 18 years from all Lebanese governorates (mean age of 16.66 ± 1.01 years). The scales used were: Dutch Restrained Eating Scale, body dissatisfaction subscale of the Eating Disorder Inventory-Second version, Rosenberg Self-Esteem Scale, Beirut Distress Scale (for psychological distress), Hamilton Anxiety Rating Scale and Patient Health Questionnaire (for depression).

RESULTS

The factor analysis yielded a one-factor solution with Eigen values > 1 (variance explained = 59.65 %; α_Cronbach = 0.924). Female gender (B = 0.19), higher BMI (B = 0.49), higher physical activity index (B = 0.17), following a diet to lose weight (B = 0.26), starving oneself to lose weight (B = 0.13), more body dissatisfaction (B = 1.09), and higher stress (B = 0.18) were significantly associated with more RE, whereas taking medications to lose weight (B=-0.10) was significantly associated with less RE. The interaction body mass index (BMI) by body dissatisfaction was significantly associated with RE; in the group with low BMI, higher body dissatisfaction was significantly associated with more RE.

CONCLUSIONS

Our study showed that the Dutch Restrained Eating scale is an adapted and validated tool to be used among Lebanese adolescents and revealed factors associated with restrained eating in this population. Since restrained eating has been associated with many clinically-diagnosed eating disorders, the results of this study might serve as a first step towards the development of prevention strategies targeted towards promoting a healthy lifestyle in Lebanese adolescents.

Eating Disorders and the Use of Cognitive Enhancers and Psychostimulants Among University Students: A Cross-Sectional Study

BACKGROUND

University students, who are at risk of eating disorders (ED), are more liable to use cognitive enhancers and psychostimulants to improve their cognitive functions and lose weight. ED in Palestinian male students is a neglected health issue. We aimed to investigate the prevalence and the association between ED and cognitive enhancers, and psychostimulants use among An-Najah National University students (ANNU).

METHODS

In a cross-sectional study conducted in 2020 at ANNU, 1047 students completed anonymous surveys for cognitive enhancers practice, the Eating Attitude Test-26 (EAT-26), Sick, Control, One, Fat and FOOD (SCOFF) screening tests.

RESULTS

The prevalence of ED among ANNU students was 21.2% based on EAT-26 (17.1% in males, 23.8% in females) and 31.5% based on SCOFF (24.0% in males, 36.3% in females). The binary logistic regression revealed that students at risk to have ED were water-pipe smokers (OR: 1.471, p-value 0.047), especially males, while students who were less likely to have ED were males (OR: 0.341, p-value<0.001), coffee users (OR: 0.581, p-value 0.014) and chocolate users (OR: 0.530, p-value 0.041) than nonusers. Moreover, the risk of ED increased with increasing body mass index (p-value<0.01). Clinical medical students showed the lowest prevalence (11.1%) compared to preclinical (22.5%), health sciences (23.7%), and non-medical students (20.9%) (p-value 0.059).

CONCLUSION

Our findings highlight water-pipe smoking as a significant health problem in males with ED, which may require unique treatment and prevention strategies. Moreover, coffee and chocolate consumption were associated with decreased risk of ED, only among males. The gender-gap in ED prevalence was very narrow compared to international results. These results prompt the need to focus on both genders in future studies instead of females. They also suggest the urgent need to address ED among Palestinian university students by educating students about mental health, identifying high-risk students, and offering easily accessible psychological help.

The brief (seven-item) eating disorder examination-questionnaire: Evaluation of a non-nested version in men and women

OBJECTIVE

Several recent studies have examined the psychometric properties of brief measures of eating disorder attitudes based on the Eating Disorder Examination Questionnaire (EDE-Q). A seven-item version (the EDE-Q7) has been proposed but, as yet, has only been investigated by looking at the items when presented as part of the longer EDE-Q (i.e., as a nested version). The current study presented the EDE-Q7 as a standalone instrument and examined factor structure fit and measurement invariance across male and female genders.

METHODS

University students (244 women; 155 men; 1 did not identify with either gender) completed questionnaires as part of two independent studies. All individuals completed the EDE-Q7 and measures of eating disorder behaviors. In a mixed-gender subsample (n = 286), measures of depression and eating disorder-specific quality of life were also included. Confirmatory factor analysis of the EDE-Q7 was conducted on males and females independently, in addition to estimates of internal consistency reliability and validity. Measurement invariance was assessed through multigroup confirmatory factor analysis.

RESULTS

The EDE-Q7 demonstrated good internal consistency and findings supported measurement invariance by gender. In a mixed-gender subsample, the measure showed positive associations with depression and both eating disorder behaviors and eating disorder-specific quality of life.

DISCUSSION

The present study adds to the literature supporting the psychometric properties of the EDE-Q7, extending this to use of the questionnaire as a standalone instrument. Measurement invariance suggests that the measure may be appropriate for college-age men and women, although future studies should establish psychometric properties more fully.

Weight suppression and weight maintenance following treatment of anorexia nervosa

OBJECTIVE

The value of weight suppression (WS) in predicting the course of anorexia nervosa (AN) is uncertain. The objective of this study was to determine, using data from a previously published study, whether patients who remain weight suppressed following restoration to a minimally normal weight are at greater risk for relapse.

METHOD

Following weight restoration, 93 women with AN were randomly assigned to receive fluoxetine or placebo along with cognitive behavioral therapy for 1 year. WS (highest adult weight minus current weight), body mass index (BMI), and their interaction were assessed as predictors of change in weight over the first 28 days, of successful weight maintenance at 6 and 12 months, and of time to relapse.

RESULTS

Neither WS nor its interaction with BMI predicted successful weight maintenance at 6 and 12 months, time to relapse, or weight change over the first 28 days following discharge.

DISCUSSION

This study found that WS does not substantially impact the likelihood of successful weight maintenance or time to relapse following restoration to a minimally normal weight in AN.

Examining the contribution of weight-bias internalization to the associations between weight suppression and disordered eating in undergraduates

Weight suppression (WS) is consistently, positively associated with eating disorder (ED) symptoms, but variables that contribute to these associations remain understudied. The current study examined weight-bias internalization as a potential contributor to the link between weight suppression (WS) and disordered eating in an undergraduate sample. Men (n = 285) and women (n = 610) completed assessments of weight history, weight-bias internalization, and ED symptoms. Absolute (difference in highest and current BMI) and relative WS (%BMI change) were calculated. Hierarchical linear and count regression models examined whether WS contributed to ED symptoms (restraint, objective binge episodes [OBEs], loss-of-control [LOC] eating, and compensatory exercise) above and beyond weight-bias internalization. Analyses were conducted by gender. After accounting for weight-bias internalization, WS demonstrated unique associations with restraint in men (p = .01) and women (p < .001), and LOC eating frequency in men (p = .02), though effects were weaker relative to weight-bias internalization. Although WS was positively correlated with frequency of OBEs in men and LOC eating in women, these associations were no longer significant when accounting for weight-bias internalization. Weight-bias internalization was positively associated with all measured ED symptoms. Consistent with previous work, gender differences in the relations of WS and ED symptoms emerged. Results suggest weight-bias internalization might contribute to links between WS and ED symptoms, particularly binge behaviors, in non-clinical samples. Future research should explore whether decreasing weight-bias internalization could weaken the association between WS and ED symptoms.

What are you losing it for? Weight suppression motivations in undergraduates

PURPOSE

Accumulating evidence suggests weight suppression (WS) is related to disordered eating and eating disorder (ED) risk in non-clinical samples; however, research to-date has not examined the intentionality of, or motivations for, WS. The purpose of this study was to: (1) qualitatively assess WS motivation in undergraduates, and (2) explore differences in body image and eating behaviors across motivation categories.

METHODS

In the first study, responses from 192 undergraduates were evaluated using inductive content analysis; four primary motivation categories emerged: appearance, functional, sports/military, and unintentional. In a second study, 1033 undergraduates indicated their primary WS motivation, if applicable, and completed body image and eating behavior measures. Separate analyses were run by gender; covariates included current body mass index (BMI) and WS.

RESULTS

Differences in body image and eating behaviors emerged across motivation categories for both men (p < 0.001) and women (p < 0.001). Appearance-motivated WS in men, and appearance and sports/military-motivated WS in women, were related to greater body dissatisfaction, restraint, thin-ideal internalization, and ED risk. Undergraduates with intentional WS demonstrated higher body dissatisfaction and eating pathology than undergraduates with unintentional or no WS (all ps < 0.05).

CONCLUSIONS

Assessing weight history and WS motivations could be a brief, low-cost intervention to improve identification of undergraduates at greatest risk for EDs. This information could be integrated into campus marketing campaigns promoting wellness.

LEVEL OF EVIDENCE

Cross-sectional descriptive study, Level V.

Weight Suppression in Eating Disorders: a Research and Conceptual Update

PURPOSE OF REVIEW

Weight suppression, the discrepancy between an individual's highest past weight at adult height and his or her current weight, is related to many characteristics of individuals with eating disorders. This paper reviews research findings from the past 5 years, draws several implications regarding the mechanism underlying these effects, and proposes new approaches to measuring weight suppression.

RECENT FINDINGS

Studies were reviewed under the categories of anorexia nervosa, bulimia nervosa, and mixed or miscellaneous samples, with more studies falling into the last category than in the first two. Recent findings have continued to show that weight suppression is related to a wide variety of biological and behavioral features in both diagnosed and sub-clinical samples. Weight suppression promotes weight gain which is anathema to individuals with eating disorders, putting them in a biobehavioral bind that appears to prolong their disorder. Priorities for future research are to understand the mechanisms underlying the effects of weight suppression, evaluate new ways of defining weight suppression, and study its implications for modifying treatment.