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

Changing eating to manage weight or shape: A cross-sectional and prospective study of the prevalence and correlates in a large Canadian adolescent cohort

OBJECTIVE

The present study examined reports of changing eating to manage weight/shape over one year among adolescents. It also tested how changing eating for weight/shape was associated with physical activity (resistance training, moderate-to-vigorous physical activity; MVPA) and mental health (depressive symptoms, flourishing), and whether weight perceptions moderated these associations.

METHODS

Participants were Canadian adolescents (N = 20,614, Mage ± SD = 14.4 ± 1.3, 52.9% girls) who completed self-report surveys in the 2020-2021 and 2021-2022 waves of the COMPASS study. Separate multilevel models were tested for each outcome.

RESULTS

Approximately 30% of adolescents reported changing their eating to manage weight/shape at least once a week. More days of changing eating were associated with significantly higher depressive symptoms and lower flourishing cross-sectionally (b = 0.51, b = -0.27) and over time (b = 0.35, -0.20); the flourishing association over time was weaker for adolescents who perceived themselves as overweight relative to about right. More days of changing eating were also associated with more MVPA and resistance training cross-sectionally (b = 2.81, b = 0.19) and over time (b = 1.28, b = 10). The relationship between changing eating and MVPA over time was stronger for adolescents who perceived themselves as overweight relative to about right; whereas the cross-sectional relationship between changing eating and resistance training was weaker.

CONCLUSIONS

Reports of changing eating to manage weight/shape were associated with divergent health outcomes; research into how and to what extreme adolescents are changing eating to manage weight/shape, and identity factors that may contribute to these differences, is warranted.

Factors associated with prospective changes in weight control intentions among adolescents

INTRODUCTION

The present study examined predictors of negative changes in weight control intentions from before to during the COVID-19 pandemic among adolescents.

METHODS

Participants were Canadian secondary school students enrolled in the COMPASS study and had completed self-report surveys before (T1; 2018/2019 and/or 2019/2020 school year) and during (T2; 2020/2021 and/or 2021/2022) the COVID-19 pandemic (N = 11,869, Mage ± SD = 13.79 years old ± 1.15, 52.89% girls, 45.30% boys, 1.81% gender diverse). Demographic, interpersonal, behavioral, and psychological predictors of weight control intention change from T1 (stay the same weight, not doing anything about weight) to T2 (lose weight, gain weight) were tested using multilevel logistic regressions.

RESULTS

Over one-third (37.0%) of adolescents who reported wanting to stay the same weight at T1 changed their intention to lose or gain weight at T2, as did 28.5% of adolescents who reported not wanting to do anything about their weight at T1. Changing weight control intention from "not doing anything about weight" at T1 to weight gain/loss at T2 was associated with resistance training, emotion dysregulation, bullying, social media use, and gender. Changing weight control intention from "stay the same weight" at T1 to weight gain/loss at T2 was associated with gender, perceived financial comfort, social media use, and flourishing.

CONCLUSIONS

Results highlight the prevalence of maladaptive weight control intention changes among adolescents, and elucidate related behavioral, interpersonal, demographic, and psychological factors. Findings can inform targeted intervention and prevention strategies to disrupt maladaptive changes in weight control intentions among high-risk subgroups.

Intermittent Fasting: Socio-Economic Profile of Spanish Citizens Who Practice It and the Influence of This Dietary Pattern on the Health and Lifestyle Habits of the Population

Intermittent fasting (IF) is a dietary approach that has gained popularity in recent years. More and more Spanish people are following this eating pattern, which consists of alternating periods of fasting with periods of food intake. Its benefits include improved metabolic and vascular health and weight loss.

OBJECTIVES

1. To study the prevalence of IF among the Spanish population. 2. To explore how demographic factors influence the choice to adopt this dietary approach.

METHODS

A descriptive cross-sectional study was conducted on the Spanish population using the NutSo-HH questionnaire, which was constructed, validated, and disseminated by the research team through a non-probabilistic snowball sampling approach, collecting socio-demographic data and nutritional, social and lifestyle habits of the population.

RESULTS AND CONCLUSIONS

A valid sample of 22,181 people participated, of whom 4.59% (n = 1018) said they practiced IF. The data show that more middle-aged men than women practice IF. In addition, individuals who follow IF methods are less likely to have no control over their food intake, are less scared to gain weight and have a higher body image, but no differences were found related to unhealthy food and nights out. There were also no significant differences in terms of the level of education, income, size of municipality, or region of residence. In conclusion, a person who practices IF seems to have adopted a healthier lifestyle and social habits.

"I was bullied for being fat in every situation, in every outfit, at every celebration": A qualitative exploratory study on experiences of weight-based oppression in Qatar

Introduction

Weight-based oppression (WBO) has been documented as a widespread phenomenon in Western countries and is associated with a range of psychological, physiological, and behavioral harms. Research on weight-based oppression is largely absent from the Arab region.

Methods

We conducted a qualitative exploratory study using semi-structured in-depth interviews to examine the internalized attitudes, values, and beliefs related to body weight, and experiences of external weight-based oppression of 29 staff, faculty, and students at Qatar University.

Results

Thematic analysis revealed six major themes on the characteristics of internalized WBO, and the nature, timing, source, extent, and impact of external WBO. WBO was regarded as so common in the Arab culture as to be normative, with damaging exposure to WBO beginning in early childhood.

Conclusion

WBO in the Arab region is an important and unrecognized public health issue. Programs to reduce WBO should be developed in all sectors.

Limitations of the protective measure theory in explaining the role of childhood sexual abuse in eating disorders, addictions, and obesity: an updated model with emphasis on biological embedding

In addition to its immediate negative consequences, childhood sexual abuse is associated with lifelong deleterious mental and physical health outcomes. This review employs a biopsychosocial perspective to better understand pathways from childhood sexual abuse to eating disorders, food and drug addictions, and obesity across the life course. Guided by an updated conceptual model, this review delineates how the biological embedding of childhood sexual abuse triggers a cascade of interrelated conditions that often result in failed attempts at weight suppression and eventually obesity. Such biological embedding involves pathways such as inflammation, allostatic load, reward sensitivity, activation of the hypothalamic-pituitary-adrenal axis, epigenetics, and structural and functional changes in the brain. These pathways are in turn theorized to lead to food addiction, substance use disorder, and eating disorders-each with potential pathways toward obesity over time. Predisposing factors to childhood sexual abuse including gender, culture, and age are discussed. This model calls into question the longstanding "protective measure" theory that purports individuals exposed to sexual abuse will deliberately or subconsciously gain weight in attempt to prevent future victimization. A more comprehensive understanding of the mechanisms by which childhood sexual abuse becomes biologically embedded may help clinicians and survivors normalize and/or address disordered eating and weight-related outcomes, as well as identify intervention strategies.Level of evidence: Level V: opinions of respected authorities, based on descriptive studies, narrative reviews, clinical experience, or reports of expert committees.

Is weight stigma associated with physical activity? A systematic review

OBJECTIVE

Weight stigma is associated with impaired health, attributed in part to reductions in health-promoting behaviors. This review analyzed evidence of the association between weight stigma and physical activity (PA) in adults and youth.

METHODS

Three databases were searched for terms related to weight stigma and PA. Eligible studies reported the quantitative association between at least one measure of weight stigma and one behavioral measure of PA.

RESULTS

A total of 38 studies met eligibility criteria. Of the 29 studies of adults, 3 used objective PA measures, and 79% used an observational, cross-sectional design. Findings of the relationship between weight stigma and PA were mixed. Everyday weight discrimination and internalizing weight stigma were associated with reduced PA in most studies. Several studies found indirect, and not direct, effects of weight stigma on PA when analyses included other individual-level factors. In the nine studies of youth, two used objective PA measures, all were observational, and only one study was longitudinal. Most youth studies found a relationship between weight-based teasing and reduced PA.

CONCLUSIONS

Weight teasing, everyday discrimination, and internalization were associated with reduced PA. However, associations were inconsistent and often indirect. Future studies should include objective PA measures with larger samples and longitudinal assessments.

Weight teasing experienced during adolescence and young adulthood: Cross-sectional and longitudinal associations with disordered eating behaviors in an ethnically/racially and socioeconomically diverse sample

OBJECTIVE

This study assessed cross-sectional and longitudinal relationships between weight teasing and disordered eating in an ethnically/racially and socioeconomically diverse sample of young people and examined these relationships across sociodemographic characteristics.

METHOD

The EAT 2010-2018 study surveyed adolescents (n = 1,534) in the Minneapolis/St. Paul public schools (mean age = 14.4 years) and 8 years later (mean age = 22.2 years).

RESULTS

Weight teasing was prevalent in adolescence (34.1%) and young adulthood (41.5%). In analyses adjusted for sociodemographic characteristics and body mass index, weight teasing was cross-sectionally associated with a higher prevalence of all disordered eating behaviors during both adolescence and young adulthood. For example, 64.5% of young adults who reported being teased about their weight engaged in unhealthy weight control behaviors, compared with 47.9% among those not teased (p < .001). There were fewer observed associations in longitudinal analyses, although weight teasing still predicted prevalent overeating and both prevalent and incident dieting (incident dieting-teased: 48.4% vs. not teased: 38.0%, p = .016). Weight teasing and disordered eating were more prevalent among Black, Indigenous, and People of Color (BIPOC) young people and those from low socioeconomic backgrounds, and the relationship between weight teasing and disordered eating was similar across ethnic/racial, socioeconomic, and gender demographic groups.

DISCUSSION

Results indicate that weight teasing is strongly correlated with disordered eating in both adolescence and young adulthood regardless of ethnicity/race, socioeconomic status, or gender. Finding suggest that future research and policy interventions should address weight stigma and prioritize the needs of BIPOC young people and young people from low socioeconomic backgrounds.

Weight Stigma in Youth: Prevalence, Consequences, and Considerations for Clinical Practice

PURPOSE OF REVIEW

This review summarizes recent evidence on weight stigma experienced by youth with overweight or obesity. We examine the prevalence and sources of weight-based victimization targeting youth, consequences of these stigmatizing experiences for their psychological and physical health, and considerations for addressing weight stigma in clinical practice and pediatric care.

RECENT FINDINGS

Weight stigma is highly prevalent among youth with high body weight, who are targets of weight-based victimization from peers, parents, and teachers. These experiences place youth at risk for psychological distress (primarily depressive symptoms, low self-esteem, and suicidal ideation), worse social and academic outcomes, and adverse physical health consequences including maladaptive eating behaviors, lower physical activity, substance use, and weight gain. Healthcare professionals and clinicians have important roles to play in efforts to help reduce weight stigma and support youth with obesity. Fundamental to these efforts is the use of supportive, compassionate, and non-stigmatizing communication with youth and their families.