The Impact of Retrospective Childhood Maltreatment on Eating Disorders as Mediated by Food Addiction: A Cross-Sectional Study

Bidirectional mediation of psychological distress and food addiction influenced by childhood trauma among adolescents

BACKGROUND

This study aims to explore the relationship between childhood trauma, psychological distress, and food addiction in adolescents.

METHODS

The sample comprised 4560 adolescents (46.67 % females) aged 12-19 years (15.21 ± 1.75) who participated in the School-based Evaluation Advancing Response for Child Health (SEARCH) survey, a mixed longitudinal cohort study in Jiangsu, China. Bidirectional mediation was used to assess the interplay among childhood trauma, psychological distress, and food addiction derived from a self-report survey.

RESULTS

Among participants, 29.67 % reported experiencing at least one type of trauma during childhood, and 2.80 % exhibited significant symptoms of food addiction. The prevalence of depression, anxiety, and stress among participants were 32.85 %, 47.52 %, and 24.80 %, respectively. Emotional neglect (OR = 2.12[1.44-3.14]), emotional abuse (OR = 5.77 [3.96-8.41]), physical neglect (OR = 1.73 [1.17-2.56]), and physical abuse (OR = 3.53 [2.26-5.52]) had a direct positive predictive effect on food addiction. Trend analyses showed that more types of childhood traumas, and higher levels of depression, anxiety, and stress were significantly associated with higher food addiction incidence. Bidirectional mediation analysis identified that both psychological distress and food addiction mediated their respective relationships with childhood trauma. The mediating effect of psychological distress was larger than that of food addiction.

LIMITATIONS

The study was limited by the use of self-reported cross-sectional data.

CONCLUSION

This study indicated a bidirectional mediation between psychological distress and food addiction in adolescents, within the context of childhood trauma. The effect size of the forward mediator was larger than the reverse mediator, which may guide future treatments.

A bibliometric analysis and visualization of global food addiction over the last decade

BACKGROUND

Food addiction is a chronic psychological disorder resulting from repeated consumption of highly palatable foods, leading to physical and mental harm. It involves individuals who struggle to control their intake of high-energy, high-fat, and high-sugar foods, often experiencing withdrawal reactions and intense cravings that trigger binge eating during stress. Recent research has focused on the impact of food addiction on physical health, nutrition, and mental well-being. This study aims to review and analyze current evidence on food addiction to advance research in China.

METHODS

A total of 941 articles on food addiction published between January 2013 and April 2023 were analyzed using the Web of Science Core Collection. CiteSpace software was utilized to identify research trends, collaborations among disciplines, authors, and institutions, as well as key topics and emerging keywords.

RESULTS

The number of publications on food addiction has steadily increased over the past decade, with the United States leading in research output (393 articles). The University of Michigan and author Gearhardt AN were prominent contributors. Key research topics included obesity, eating disorders, addiction, and overeating. Emerging themes encompassed obesity psychology, food composition, brain function, and behavioral addiction.

CONCLUSION

Global research on food addiction primarily focuses on understanding the psychological and neurological underpinnings, metabolic implications, addictive behaviors, and treatment modalities such as sleeve gastrectomy. Future research aims to develop personalized prevention and intervention strategies for food addiction.

Weight suppression at lowest weight as an indicator of eating disorder clinical severity: A retrospective cohort study

OBJECTIVES

Weight suppression (WS) defines the difference between the highest weight in adulthood and the current weight. WS at lowest weight is the difference between the highest and the lowest ever weight. Weight rebound is the difference between the past lowest weight and current weight. The distinction in the capacities of WS, weight rebound, and WS at the lowest weight remains unclear regarding their efficacy in forecasting clinical endpoints. This study assessed the relationship between WS, WS at lowest weight and/or weight rebound and eating disorder (ED) clinical severity.

METHODS

In this retrospective cohort study, adult participants were selected at the Outpatient Unit for multidisciplinary assessment of ED, Montpellier, France, between February 2012 and October 2014 and May 2017 and January 2020. ED clinical severity was evaluated using the Eating Disorder Examination Questionnaire (EDE-Q).

RESULTS

The sample included 303 patients: 204 with anorexia nervosa (AN) and 99 with bulimia nervosa (BN). The EDE-Q total score was positively correlated with WS at lowest weight in patients with AN (Spearman's rho = 0.181, p = 0.015) and with BN (Spearman's rho = 0.377; p < 0.001). It was also positively correlated with weight rebound (Spearman's rho = 0.319; p = 0.003) in patients with BN. In the multivariate analysis, EDE-Q total score was associated with WS at lowest weight only in patients with BN (β = 0.265; p = 0.03).

CONCLUSION

WS at lowest weight seems to be a good measure of ED clinical severity. More research is needed for better understanding WS at lowest weight in assessment and treatment of patients with ED.

The risk of eating disorders following the August 4th, 2020 explosion in Beirut and its relationship with trauma exposure and PTSD symptoms

INTRODUCTION

To date, no study has demonstrated the link between the diagnosis of provisional PTSD and ED in people exposed to the explosion of August 4th, 2020.

METHODS

Online participants were classified into 4 categories according to the degree of exposure to the explosion (unexposed, slightly exposed, moderately exposed, and severely exposed). The screening for ED was done using the standardized SCOFF questionnaire and the screening for provisional PTSD using the standardized IES-R questionnaire.

RESULTS

Our sample included 703 participants. In the bivariate analysis, there was a trend for an association between degree of exposure to the explosion and the risk of development of an ED (p = 0.055). The independent variables included in the multivariate analysis that were statistically associated with a risk of developing eating disorders are secondary school as the highest level of education (p = 0.029; OR = 2.15) and the risk of PTSD (p = 0.041; OR = 2.05) according to IES-R, specifically hyperarousal (p = 0.028; OR = 1.07) as a symptom cluster. Provisional PTSD played a mediating role, creating a partial and indirect relationship between the degree of exposure to the explosion and the risk of developing ED with a β coefficient of 0.075 (p < 0.001) CONCLUSION: The risk of PTSD according to IES-R was found to be a determinant of a higher risk of developing ED among participants exposed to the explosion in addition to mediating between the effect of exposure severity and the risk of ED. It is essential to fully assess and manage PTSD symptoms and ED patients exposed to such a psychological trauma.

Trauma Experiences Are Common in Anorexia Nervosa and Related to Eating Disorder Pathology but Do Not Influence Weight-Gain during the Start of Treatment

OBJECTIVE

The main characteristics of Anorexia Nervosa (AN) in adults are restriction of energy intake relative to requirements leading to significant weight loss, disturbed body image, and intense fear of becoming fat. Traumatic experiences (TE) have been reported as common, although less is known about the relationship with other symptoms in severe AN. We investigated the presence of TE, PTSD, and the relation between TE, eating disorder (ED) symptoms, and other symptoms in moderate to severe AN (n = 97) at admission to inpatient weight-restoration treatment. All patients were enrolled in the Prospective Longitudinal all-comer inclusion study on Eating Disorders (PROLED).

METHODS

TE were assessed using the Post-traumatic stress disorder checklist, Civilian version (PCL-C), and ED symptoms using the Eating Disorder Examination Questionnaire (EDE-Q); depressive symptoms were assessed using the Major Depression Inventory (MDI), and the presence of Post-traumatic Stress Disorder (PTSD) was diagnosed according to ICD-10 criteria.

RESULTS

The mean score on PCL-C was high (mean 44.6 SD 14.7), with 51% having a PCL-C score at or above 44 (n = 49, suggested cut-off for PTSD), although only one individual was clinically diagnosed with PTSD. There was a positive correlation between baseline scores of PCL-C and EDE-Q-global score (r = 0.43; p < 0.01) as well as of PCL-C and all EDE-Q subscores. None of the included patients were admitted for treatment of TE/PTSD during the first 8 weeks of treatment.

CONCLUSIONS

In a group of patients with moderate to severe AN, TE were common, and scores were high, although only one had a diagnosis of PTSD. TE were related to ED symptoms at baseline, but this association diminished during the weight restoration treatment.

Novel ketamine and zinc treatment for anorexia nervosa and the potential beneficial interactions with the gut microbiome

Anorexia nervosa (AN) is a severe illness with diverse aetiological and maintaining contributors including neurobiological, metabolic, psychological, and social determining factors. In addition to nutritional recovery, multiple psychological and pharmacological therapies and brain-based stimulations have been explored; however, existing treatments have limited efficacy. This paper outlines a neurobiological model of glutamatergic and γ-aminobutyric acid (GABA)-ergic dysfunction, exacerbated by chronic gut microbiome dysbiosis and zinc depletion at a brain and gut level. The gut microbiome is established early in development, and early exposure to stress and adversity contribute to gut microbial disturbance in AN, early dysregulation to glutamatergic and GABAergic networks, interoceptive impairment, and inhibited caloric harvest from food (e.g., zinc malabsorption, competition for zinc ions between gut bacteria and host). Zinc is a key part of glutamatergic and GABAergic networks, and also affects leptin and gut microbial function; systems dysregulated in AN. Low doses of ketamine in conjunction with zinc, could provide an efficacious combination to act on NMDA receptors and normalise glutamatergic, GABAergic and gut function in AN.

The association between childhood trauma and overweight and obesity in young adults: the mediating role of food addiction

PURPOSE

Childhood trauma is associated with increased risk of obesity during adulthood, which may be associated with the development of food addiction. This study examined whether food addiction mediated the relationship between childhood trauma and obesity in young adults.

METHODS

A sample of 512 young adults, aged 18 to 30 years, living with overweight and obesity (Body Mass Index ≥ 25 kg/m2), from the United Kingdom participated in the study. Participants completed the Childhood Trauma Questionnaire (CTQ), the Yale Food Addiction Scale, and provided their current height and weight to compute their Body Mass Index (BMI).

RESULTS

Using the PROCESS macro, a mediation analysis found that food addiction accounted for 45% of variance in the relationship between childhood trauma and BMI. Post hoc analyses were conducted to examine the mediating effect of food addiction across each of the five subscales of the CTQ (emotional/physical/sexual abuse and emotional/physical neglect). Food addiction accounted for 32% to 51% of the variance in the relationship between each CTQ subscale and BMI.

CONCLUSIONS

These findings suggest that experiences of childhood trauma are associated with the development of overweight and obesity during early adulthood and up to half of this relationship can be attributed to food addiction, which is likely used as a maladaptive coping mechanism in response to trauma. Young adults living with overweight and obesity who report experiences of childhood trauma may benefit from the support of clinical and counselling psychologists to improve their understanding of the underlying psychosocial factors that influence their eating behaviours.

LEVEL OF EVIDENCE

Level V, cross-sectional analytic study.

Childhood betrayal trauma, dissociation, and shame impact health-related quality of life among individuals with chronic pelvic pain

BACKGROUND

High betrayal trauma (HBT), or interpersonal trauma perpetrated by someone close, is linked to dissociation and shame, while trauma perpetrated by someone less close, low betrayal trauma (LBT) is associated with post-traumatic stress disorder (PTSD).

OBJECTIVE

Child interpersonal trauma is common among women with chronic pelvic pain (CPP) and can negatively impact physical and mental health-related quality of life (HRQOL). Our study investigates unexplored connections between these variables.

PARTICIPANTS & SETTING

Survey data were analyzed from 96 English-speaking female patients with CPP at a women's health clinic (mean age = 33, 59 % White non-Hispanic, 62 % married or cohabitating, 61.5 % completed post-high school degree); prevalence of HBT and LBT were 65.2 % and 45.6 %, respectively.

METHODS

Multiple regression analyzed relationships between mental and physical HRQOL and dissociation, shame, and PTSD. Parallel mediation analyses examined indirect relationships between mental and physical HRQOL and exposure to childhood HBT and LBT.

RESULTS

Dissociation was related to worse physical HRQOL, while shame was related to worse physical and mental HRQOL. Dissociation and shame mediated relationships between childhood HBT and current mental (R² = 0.08, p = .01) and physical (R² = 0.11, p = .002) HRQOL. Shame, but not PTSD, mediated relationships between childhood LBT and current mental (R² = 0.14, p < .001) and physical (R² = 0.16, p < .001) HRQOL.

CONCLUSIONS

Our study provides preliminary evidence that dissociation and shame negatively impact HRQOL among individuals with CPP in the context of exposure to different types of childhood betrayal trauma. Replication studies to validate our results with larger samples and longitudinal designs are encouraged.

Childhood trauma and food addiction: The role of emotion regulation difficulties and gender differences

OBJECTIVE

Childhood trauma has been associated with substance use disorders (SUDs), but less research has investigated its association with food addiction (i.e., compulsive intake of highly processed foods containing refined carbohydrates and/or added fat). Existing research on childhood trauma and food addiction has focused primarily on women from restricted samples. Further, emotion dysregulation difficulties are implicated in both childhood trauma and food addiction, but research has not explored whether it may play a mediating role.

METHOD

Thus, the current study utilizes a sample of 310 participants recruited from Amazon Mechanical Turk (mean age = 41.3 years old, 47.4% men, 78.7% white) to investigate the mediating role of emotion dysregulation in the association between childhood trauma and food addiction. We also conducted exploratory analyses to investigate for gender differences in these associations. Gender-stratified correlational matrixes were conducted to investigate association between childhood trauma, food addiction, and emotional dysregulation. Moderated mediation models and multilevel regressions were also conducted to identify the role of gender in the association between childhood trauma, food addiction, and emotion dysregulation.

RESULTS

Emotion dysregulation was found to partially mediate the associations between food addiction and childhood trauma and gender was found to moderate associations between childhood trauma and emotion dysregulation, as well as childhood trauma and food addiction. Both moderating pathways were significantly stronger for men compared to women.

DISCUSSION

Results suggests that emotion dysregulation may be one important mediator in the association between childhood trauma and food addiction, particularly for men. The identification of other potential mechanisms contributing to the association between childhood trauma and food addiction and the use of longitudinal measurement strategies will be important in future research.

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.

Food addiction and lifetime alcohol and illicit drugs use in specific eating disorders

BACKGROUND AND AIMS

Food addiction (FA) and substance use (SU) have frequently been reported in patients with eating disorders (EDs). Our study aimed to assess the prevalence rates of FA and/or lifetime problematic alcohol and illicit drug use among patients with specific ED, such as: bulimia nervosa (BN), binge eating disorder (BED), and other specified feeding and eating disorder (OSFED). We sought to identify clinical, psychopathological, and personality profiles involved in these addictive behavior-based phenotypes.

METHODS

The total sample was 527 patients (176 BN, 115 BED, and 236 OSFED). FA was assessed through the Yale Food Addiction Scale 2.0. To determine lifetime SU, a semi-structured clinical interview was carried out.

RESULTS

Patients with BN had the highest rates of FA both with and without SU. No gender differences were obtained for the prevalence of current FA and/or lifetime SU. Patients reporting at least one addictive-related behavior exhibited increased clinical severity compared to those who reported none. Increased impulsivity (such as high lack of premeditation, sensation seeking, and positive urgency) and low self-directedness were differentiating factors for presenting one or two addictive behaviors.

DISCUSSION AND CONCLUSIONS

Overall, patients presenting with at least one addictive-like behavior reported a poorer clinical status than those without. Also, patients with FA and SU exhibited a more dysfunctional profile characterized by high impulsivity and low self-directedness. These findings would support the need for targeted treatments to reduce impulsivity and increase self-directedness, especially in patients with any addictive-related behavior, as a step towards improving their treatment outcome.

Child neglect and eating habits in primary schoolchildren: A prospective study in Wuhan, China

Child neglect (CN) has been associated with eating disorders, but little is known about its prospective association with the eating habits (EHs) of children. This study aimed to assess the cross-sectional and prospective associations of baseline CN with six common EHs in Chinese primary schoolchildren. We analyzed two-wave data of 1102 children (aged 9.1 ± 0.5 years) in Wuhan, China. Baseline CN was investigated by the Child Neglect Scale. Baseline and follow-up EHs, including fruit, vegetables, milk, sugar-sweetened beverages, and high-calorie snack and breakfast consumption frequency, were assessed by the Food Frequency Questionnaires. The association of baseline CN with baseline/follow-up EHs was analyzed by the generalized linear model (GLM). The association of baseline CN with the change of EHs from baseline to follow-up was examined by the Generalized estimating equation (GEE) model. After adjusting for demographic characteristics, pubertal stage, and body mass index, GLM indicated that higher baseline CN was associated with lower frequency of consuming fruit/vegetables/milk/breakfast and higher frequency of consuming sugar-sweetened beverages and high-calorie snacks at baseline, while it was only associated with lower frequency of vegetables/breakfast consumption and higher frequency of sugar-sweetened beverages consumption at follow-up. GEE results indicated that children with higher CN had a more rapid increase for the frequency of fruit/milk/breakfast consumption and a steeper decrease for the frequency of sugar-sweetened beverages consumption. In conclusion, higher CN was associated with unhealthy EHs. Yet simultaneously, children with higher CN have more scope to promote the health of their EHs. Targeting and reducing CN may be a promising approach for future interventions to improve subsequent EHs.

Prevalence and correlates of food addiction: Systematic review of studies with the YFAS 2.0

BACKGROUND

Research on food addiction (FA) has been growing and increasing interest has been seen in comprehending its mechanisms and clinical and psychological correlates of this phenomena. This field of study is specially apply to understand obesity and eating behavior issues related to eating disorders (ED).

OBJECTIVES

We performed a literature review that describe recent research using the updated version of the Yale Food Addiction Scale (YFAS 2.0) or modified-YFAS (mYFAS 2.0), from the date of its publication.

METHODS

Search were performed in Web of Science, Pubmed and PsycNET databases for studies that used the YFAS 2.0 and mYFAS 2.0.

RESULTS

The studies (n = 53) investigated adaptation and validation of the scale in different cultures (n = 13), prevalence on nonclinical populations and representative samples (n = 5), food addiction in obesity samples (n = 11), in samples with ED and disordered eating (n = 10) and studies that investigated FA in association with other clinical and psychological variables (n = 14).

DISCUSSION

Studies with the YFAS 2.0 reveal higher prevalence of FA in different samples, and a great association between FA and BED, BN and obesity. Implications for diagnostic of this phenomena and the overlap between FA and other disorders are discussed.

CONCLUSIONS

The field of FA remains an open subject and effort must be implied to understand the subjective experience of addiction related to eating and food.

Mediating Factors between Childhood Traumatic Experiences and Eating Disorders Development: A Systematic Review

Background: Many people with eating disorders often report having suffered some kind of childhood trauma. For this reason, many studies have attempted to explore the mediating factors between traumatic experiences and the development of eating disorders. The aim of our study is to conduct a systematic review of published works on the mediating factors between childhood trauma and the development of eating disorders. Method: This review was carried out up to 5 December, 2020, using the databases PsycInfo and PubMed, combining the keywords, and applying a set of inclusion and exclusion criteria. Results: A total of 18 articles were retrieved. After the articles were analyzed, a set of mediating factors between childhood trauma and the development of eating disorders was established, including pathological dissociation, difficulty with emotion self-regulation, body dissatisfaction, negative affect/depression, anxiety, general distress, self-criticism, and alexithymia, among others. Conclusions: In addition to evaluating trauma in eating disorders, these results highlight the importance of paying special attention to the presence of various possible mediating factors, which must be taken into account in the planning of therapeutic treatment. Identifying symptoms of trauma or eating disorders early on could prevent onset of more severe psychopathology during adulthood.

Food Addiction and Psychosocial Adversity: Biological Embedding, Contextual Factors, and Public Health Implications

The role of stress, trauma, and adversity particularly early in life has been identified as a contributing factor in both drug and food addictions. While links between traumatic stress and substance use disorders are well documented, the pathways to food addiction and obesity are less established. This review focuses on psychosocial and neurobiological factors that may increase risk for addiction-like behaviors and ultimately increase BMI over the lifespan. Early childhood and adolescent adversity can induce long-lasting alterations in the glucocorticoid and dopamine systems that lead to increased addiction vulnerability later in life. Allostatic load, the hypothalamic-pituitary-adrenal axis, and emerging data on epigenetics in the context of biological embedding are highlighted. A conceptual model for food addiction is proposed, which integrates data on the biological embedding of adversity as well as upstream psychological, social, and environmental factors. Dietary restraint as a feature of disordered eating is discussed as an important contextual factor related to food addiction. Discussion of various public health and policy considerations are based on the concept that improved knowledge of biopsychosocial mechanisms contributing to food addiction may decrease stigma associated with obesity and disordered eating behavior.