Prevention and early intervention in eating disorders: findings from a rapid review

Early intervention for eating disorders

PURPOSE OF REVIEW

Research on early intervention for eating disorders has started to gain traction and examples of this in practice are increasing. This review summarizes findings over the past 3 years, focusing on the clinical effectiveness of early intervention in practice and the barriers and facilitators to its implementation.

RECENT FINDINGS

Recent developments in early intervention for eating disorders can be divided into three broad themes: research that has examined the efficacy of early intervention pathways in practice, research that has informed understanding of the target patient groups of early intervention (via clinical staging models, e.g.), and research that has suggested new ways to progress early intervention, towards becoming a standard part of best practice care.

SUMMARY

Early intervention pathways have shown promising clinical outcomes and are viewed positively by patients, clinicians and other stakeholders. However, more robust trials of their efficacy, effectiveness and cost-effectiveness are needed. Additionally, barriers to early intervention have been identified (e.g. delayed help-seeking); research must now develop and evaluate strategies to address these. Finally, the early intervention models in practice are underpinned partly by clinical staging models for eating disorders, which require further development, especially for eating disorders other than anorexia nervosa.

Eating disorders and health literacy in Germany: results from two representative samples of adolescents and adults

Introduction

Eating disorders are associated with substantial burden for the affected individuals including negative health outcomes and increased mortality. So far, prevention programs for eating disorders have yielded mixed results concerning their efficacy. Therefore, more targeted prevention programs need to be developed. Health literacy has been identified as a potential influencing factor of eating disorders. This study aimed at exploring the relationship between likely cases of eating disorders and health literacy, alongside additional sociodemographic factors.

Materials and methods

Two large samples of adults (N = 3,011) and adolescents (N = 1,021) representative of the German-speaking population in Germany were recruited. Likely cases of eating disorders were identified using the SCOFF questionnaire. Health literacy was assessed with the HLS-EU-Q16 questionnaire. Sociodemographic information, including age, gender, social status and level of education, and subjective body image were obtained. χ2-tests of independence were calculated to determine the association between the investigated constructs.

Results

Suspected eating disorders were more likely in female than male adolescents but were not related to gender in adults. Rates of suspected eating disorders increased with increasing age in adolescents and decreased with increasing age in adults. While levels of education were unrelated to suspected eating disorders, low social status was associated with higher rates of suspected eating disorders in adults but not adolescents. Inadequate or problematic health literacy and negative body image were associated with higher rates of suspected eating disorders compared to adequate health literacy and more positive body image.

Discussion

Likely cases of eating disorders are related to health literacy and body image as well as sociodemographic factors. These constructs should therefore be addressed in future research to improve prevention programs.

Digital body image interventions for adult women: A meta-analytic review

Although many women experience body dissatisfaction, treatment options that prevent the onset of more serious conditions are limited in accessibility. As such, digital interventions may be an appropriate alternative resource to address restricted treatment options. This study provides statistical syntheses of the evidence for digital body image interventions for non-clinical adult women. A systematic literature search identified 19 studies (N = 2424) that tested the effect of a digital body image intervention compared to a control condition. Study results were synthesised using random effects models, and small to medium statistically significant effect sizes indicated that digital interventions were beneficial in increasing overall global satisfaction (g = 0.43) and reducing cognitive body dissatisfaction (g = 0.36). These meta-analytic findings provide evidence for the efficacy of digital body image interventions for non-clinical adult women. Intervention type was not found to be a statistically significant moderator, which may suggest that a range of intervention types can produce similar reductions in body dissatisfaction. Overall, digital body image interventions may be a feasible option to alleviate body dissatisfaction, particularly for women who may be unable to access conventional treatment.

Eating disorder symptoms and comorbid mental health risk among teens recruited to a digital intervention research study via two online approaches

INTRODUCTION

It is crucial to identify and evaluate feasible, proactive ways to reach teens with eating disorders (EDs) who may not otherwise have access to screening or treatment. This study aimed to explore the feasibility of recruiting teens with EDs to a digital intervention study via social media and a publicly available online ED screen, and to compare the characteristics of teens recruited by each approach in an exploratory fashion.

METHOD

Teens aged 14-17 years old who screened positive for a clinical/subclinical ED or at risk for an ED and who were not currently in ED treatment completed a baseline survey to assess current ED symptoms, mental health comorbidities, and barriers to treatment. Bivariate analyses were conducted to examine differences between participants recruited via social media and those recruited after completion of a widely available online EDs screen (i.e., National Eating Disorders Association [NEDA] screen).

RESULTS

Recruitment of teens with EDs using the two online approaches was found to be feasible, with 934 screens completed and a total of 134 teens enrolled over 6 months: 77% (n = 103) via social media 23% (n = 31) via the NEDA screen. Mean age of participants (N = 134) was 16 years old, with 49% (n = 66) identifying as non-White, and 70% (n = 94) identifying as a gender and/or sexual minority. Teens from NEDA reported higher ED psychopathology scores (medium effect size) and more frequent self-induced vomiting and driven exercise (small effect sizes). Teens from NEDA also endorsed more barriers to treatment, including not feeling ready for treatment and not knowing where to find a counselor or other resources (small effect sizes).

DISCUSSION

Online recruitment approaches in this study reached a large number of teens with an interest in a digital intervention to support ED recovery, demonstrating the feasibility of these outreach methods. Both approaches reached teens with similar demographic characteristics; however, teens recruited from NEDA reported higher ED symptom severity and barriers to treatment. Findings suggest that proactive assessment and intervention methods should be developed and tailored to meet the needs of each of these groups.

PUBLIC SIGNIFICANCE

This study examined the feasibility of recruiting teens with EDs to a digital intervention research study via social media and NEDA's online screen, and demonstrated differences in ED symptoms among participants by recruitment approach.

"I Haven't Told Anyone but You": Experiences and Biopsychosocial Support Needs of People With Type 2 Diabetes and Binge Eating

Up to 25% of people with type 2 diabetes (T2D) may binge eat which is almost 10 times as many as in the general population. Binge eating is associated with depression, anxiety, and social isolation. Moreover, binge eating may increase the risk of obesity and high blood glucose levels, both of which can accelerate the onset of complications to diabetes and death in people with T2D. Still, little is known about the experiences, needs, and preferences of people with T2D and binge eating that can inform and develop current and future treatment efforts. The aim of the study was therefore to gain in-depth insights into the experiences and biopsychosocial support needs of women and men with T2D and binge eating. Twenty semi-structured individual interviews (65% with females) were conducted and analyzed according to the methodology of Interpretive Description. Four themes were identified: (a) T2D and binge eating: Feeling trapped in a vicious circle; (b) Unwanted outcasts: Responding to continuous criticism; (c) Biomedical relief: Blaming and adjusting the body; and, (d) Silent struggles: Wanting to cease the secrecy. Pertinent to all themes were the guilt, shame, and worries about developing complications that the participants experienced when binge eating despite having T2D. Although binge eating triggered emotional distress, binge eating was at the same time a way of coping with such distress. Implications for treatment and future research are discussed, including the need to systematically assess and address binge eating in routine T2D care.

Prevention of eating disorders: 2023 in review

This review of 16 prevention-related publications in Eating Disorders during 2022 is framed by three models: (1) Mental Health Intervention Spectrum: health promotion → types of prevention → case identification/referral → treatment; (2) the prevention cycle: rationale and theory, shaped by critical reviews → clarifying risk and protective factors → program innovation and feasibility studies → efficacy and effectiveness research → program dissemination; and (3) definitions of and links between disordered eating (DE) and eating disorders (EDs). Seven articles fell into the category of prevention rationale (including screening studies) and relevant reviews, while nine articles addressed correlates of/risk factors (RFs) for various aspects of DE and EDs. One implication of the 16 articles reviewed is that RF research toward construction of selective and indicated prevention programs for an expanding array of diverse at-risk groups needs to address, from a nuanced, intersectional framework, a broad range of factors beyond negative body image and internalization of beauty ideals. Another implication is that, to expand and improve current and forthcoming prevention programs, and to shape effective advocacy for prevention-oriented social policy, the field in general and Eating Disorders in particular need more scholarship in the form of critical reviews and meta-analyses; protective factor research; prevention program development and multi-stage evaluation; and case studies of multi-step activism at the local, state (province, region), and national levels.

A Bibliometric Analysis of Scientific Publications on Eating Disorder Prevention in the Past Three Decades

BACKGROUND

Eating disorders (EDs) present a growing concern due to their widespread occurrence and chronic course, the low access to evidence-based treatment, and the significant burden they place on the patients and society. This picture justifies intensive focus on the prevention of EDs. The current study provides the first bibliometric analysis of research on the prevention of EDs, focusing on trends and contributions, to prompt further prevention research.

METHODS

We conducted a bibliometric analysis of publications on the prevention of EDs using the Web of Science database, from 1993 to 2023. Focusing on universal and selective prevention strategies, our study involved a rigorous selection process, narrowing down from 10,546 to 383 relevant papers through manual screening. The analysis utilized the "bibliometrix" R package (version 4.2.2) and Python (version 3.9.6) for data processing, with VOSviewer employed for mapping collaboration networks.

RESULTS

Our analysis revealed a consistent annual growth rate of 10.85% in ED prevention research publications, with significant contributions from the "International Journal of Eating Disorders" and some notable authors. The United States emerged as the dominant contributor. The analysis also highlighted key trends, including a surge in publications between 2010 and 2017, and the role of major institutions in advancing research in this field.

DISCUSSION

The increasing rate of publications on the prevention of EDs is encouraging. However, the actual number of studies on the prevention of EDs are limited, and the majority of this work is performed by a few research groups. Given the high concentration of publications within a few countries and research groups, increased funding, facilitation of prevention research on a wider scale, and engagement of more researchers and further collaboration are called for.

Enhancing body image satisfaction and well-being among early adolescents: Feasibility and preliminary outcomes of the mind. body. voice. program

Although most research has emphasized high-school and college-aged women, body dissatisfaction and eating disorder behavior are also a concern for middle-school girls. We partnered with Girls Inc., a community-based organization to explore feasibility and preliminary outcomes of the mind. body. voice. (m.b.v.) program with a middle-school-aged cohort. The program was collaboratively designed with youth, focusing on body image satisfaction, disordered eating risk factors, and mental health and well-being. The work occurred during the COVID-19 pandemic, offering a unique opportunity to assess the promise of the program under difficult extenuating circumstances. In an open-trial design, we assessed change from pre- to post-program administered with two cohorts, one delivered remotely in 2020 (n = 17) and one in-person in 2021 (n = 13). Findings indicated that participation in the m.b.v. program was associated among both cohorts with significant decreases in negative body judgment and adherence to cultural appearance biases, and significant increases in body awareness, agency, and positive self-regard, as well as significant reductions in negative affect. Results support the feasibility and promise of both remote and in-person administration of the program targeting young adolescents, and in partnership with a well-established community-based organization.

A Narrative Review of Early Intervention for Eating Disorders: Barriers and Facilitators

Eating disorders (EDs) are serious psychiatric illnesses that typically develop during adolescence and emerging adulthood. Early intervention is important for improved outcomes for young people with EDs, yet help-seeking is low and individuals often have a significantly protracted start to treatment, suggesting that early intervention is not well established in the ED field. Previous reviews on facilitators and barriers to early intervention for EDs largely cover perceived barriers related to patient variables and perspectives, whereas clinician-, service-, and healthcare system-related facilitators and barriers are less frequently reviewed. The aim of this review is to synthesize the literature on barriers to and facilitators of early intervention for EDs, regarding patient-, clinician-, service-, and healthcare system-related factors. A narrative review was conducted by searching for relevant peer-reviewed, English-language articles published up until July 2023 on PubMed and PsychINFO. The search was conducted in two steps. First, key search terms were used to identify existing reviews and meta-analyses on facilitators and barriers to early intervention for EDs. Then, additional search terms were added to search for primary and secondary research on patient/family, clinician, service, and healthcare system-related barriers and facilitators. The identified literature shows that, after overcoming intrinsic, motivational barriers (such as self-stigma, denial, and ambivalence), help-seeking individuals may be met with long service waiting lists and limited treatment options. Despite these barriers, there is ongoing research into early intervention in practice, which aims to reach underserved populations and facilitate early intervention despite high service demands and shortages of trained healthcare professionals. Funding for ED research and services has historically been low, and there is also a research-practice gap. This highlights the need for increased consideration of, and funding for early intervention for EDs, to remove barriers as well as facilitate discussions around how to make early intervention programs scalable and sustainable.

Similarities and differences regarding acute anorexia nervosa and semi-starvation: does behavioral thermoregulation play a central role?

Objective

To clarify the association between acute anorexia nervosa (AN) and semi-starvation (SS) by focusing on similarities and differences in physiology, mood, and behavior.

Method

A comparison of published literature between these two groups.

Results

Both groups show similar hormonal and metabolic changes in response to caloric restriction and extreme weight loss (~25%). Associated changes result in a reduced body temperature (Tcore-low). Maintenance of body temperature within a specific range is crucial to survival. However, both groups cannot activate autonomic strategies to maintain their Tcore-low, such as increasing metabolic rate, constricting skin blood vessels, or shivering. Furthermore, Tcore-low increases the individuals' "coldness sensations" throughout the body, hence the frequent reports from ANs and SSs of "feeling cold." To eliminate these uncomfortable "coldness sensations" and, importantly, to maintain Tcore-low, ANs, and SSs "select" different thermoregulatory behavioral strategies. It is proposed that the primary differences between AN and SS, based on genetics, now manifest due to the "selection" of different thermo-regulatory behaviors. AN patients (ANs) "select" hyperactive behavior (HyAc), which increases internal metabolic heat and thus assists with maintaining Tcore-low; in harmony with hyperactive behavior is a lively mood. Also related to this elevated arousal pattern, ANs experience disrupted sleep. In contrast, SS individuals "select" a passive thermo-behavioral strategy, "shallow torpor," which includes reduced activity, resulting in energy conservation. In addition, this inactivity aids in the retention of generated metabolic heat. Corresponding to this lethargic behavior, SS individuals display a listless mood and increased sleep.

Conclusion

Initial similarities between the two are attributable to physiological changes related to extreme weight loss. Differences are most likely attributable to genetically programmed "selection" of alternate thermoregulatory strategies, primarily to maintain Tcore-low. However, if acute AN is prolonged and evolves into a chronic condition, AN will more closely align with starvation and more precisely reflect SS symptomology.

Effects of mealtime assistance in the nutritional rehabilitation of eating disorders

PURPOSE

The aim of the study was to examine the effects of meal supervision, provided by health professionals, volunteers or family members, on anthropometric, nutritional, psychological, and behavioural outcomes in patients with eating disorders (EDs).

METHODS

The present systematic review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. The last search was conducted in three databases (PubMed, Scopus, and the Cochrane library). Inclusion criteria considered paediatric and adult patients suffering from EDs, regardless of ethnicity, and treated in different therapeutic settings. The quality of the studies was evaluated using the Newcastle Ottawa Scale (NOS) adapted for cross-sectional studies and Version 2 of the Cochrane risk-of-bias assessment tool for randomised trials.

RESULTS

3282 articles were retrieved, out of which only 6 met the eligibility criteria. A marked heterogeneity in definitions and approaches to supervised mealtime was observed. This variability emerged in the methodologies used in the supervised meal, and in the reference values for the outcome measures that were used, such as the analysis of different parameters. Based on these observations, mealtime assistance provided to patients with EDs shows an overall positive effect on eating behaviour and dysfunctional attitudes. Future research should be prompted to provide a thorough definition of a structured procedure for meal assistance to be potentially and systematically included in the nutritional rehabilitation protocols for patients with EDs.

LEVEL OF EVIDENCE

Level IV systematic reviews of uncontrolled trials.

Mortality and mental health funding-do the dollars add up? Eating disorder research funding in Australia from 2009 to 2021: a portfolio analysis

Background

Eating Disorders (EDs) are among the deadliest of the mental disorders and carry a sizeable public health burden, however their research and treatment is consistently underfunded, contributing to protracted illness and ongoing paucity of treatment innovation.

Methods

We compare absolute levels and growth rates of Australian mental health research funding by illness group for the years 2009-2021, with a specific focus on eating disorders analysed at the portfolio level.

Findings

Actual and adjusted data obtained from Australia's three national medical research funding bodies (NHMRC, ARC and MRFF) shows eating disorders receive a disproportionately low allocation of mental health research funding despite having amongst the highest mortality rates. Forty-one category one research grants totalling $AUD28.1 million were funded for eating disorders over the period. When adjusted for inflation, this equates to $2.05 per affected individual, compared with $19.56 for depression, $32.11 for autism, and $176.19 for schizophrenia. Half of all research funded for eating disorders was 'basic' research (e.g., illness underpinning), with little investment in the development of innovative treatment models, novel therapeutics or translation, well reflected by recovery rates of less than 50% in individuals with Anorexia Nervosa.

Interpretation

Significant discrepancy remains between research funding dollars and disease burden associated with the mental health disorders. The extent to which eating disorders are underfunded may in part be attributable to inaccuracies in epidemiological and burden of disease data.

Funding

This work was in-part funded by the Australian Government Department of Health and the National Eating Disorder Research & Translation Strategy. The funder was not directly involved in informing the development of the current study.