Orthorexia nervosa: An integrative literature review of a lifestyle syndrome

Global screening of health behaviors: Introducing Lev-screening (Lev-s)-development and psychometric evaluation

Poor health behaviors have been identified as a critical factor for the burden on healthcare systems and individual suffering. However, comprehensive assessment of health behaviors is time-consuming and often neglected. To address this, we introduce the Lev-screening (Lev-s), a new, brief tool that covers multiple health behaviors. The Lev-s assesses ten health behaviors-physical activity, diet, alcohol use, tobacco use, illegal drug use, sleep, social relations, meaningful activities, sexual health, and screen health-using 33 items. This article details the development and psychometric evaluation of Lev-s with a sample of 2,279 participants aged 18-87. Test-retest reliability estimated as intra-class correlation coefficients for the different health behaviors ranged from .71 to .98 (n = 157), indicating moderate to excellent reliability. Lev-s showed associations with quality of life, demonstrated inter-correlations among included health behaviors, and detected group differences between individuals with and without neurodevelopmental conditions. The Lev-s exhibits satisfactory psychometric properties and holds promise as an efficient tool for screening of health behaviors.

Striving for the perfect diet? The mediating role of perfectionism in the relationship between obsessive compulsive symptoms and traits of Orthorexia Nervosa

BACKGROUND

Orthorexia Nervosa (ON) is a disordered eating style involving an unhealthy obsession with 'healthy' or 'clean' eating. Its aetiology is still poorly understood and is not yet recognised in diagnostic manuals. While ON has been associated with Obsessive Compulsive (OC) symptoms and perfectionism, no study to date has looked at the relationship between OC symptoms and ON tendencies via perfectionism, or the influence of two facets of perfectionism in this relationship, namely evaluative concern and achievement striving. Examining the potential role of perfectionism helps to understand the aetiology of ON as well as inform potential treatments tailored specifically for ON and comorbid OC symptoms.

METHODS

In this cross sectional study, we tested 507 participants (n = 70 males, n = 69 at risk of ON) on questionnaires measuring OC symptoms, perfectionism and ON symptoms. We ran two mediation analyses to look at the overall relationship between perfectionism and OC and ON symptoms (Model 1) as well as the specific contribution of evaluative concern and achievement striving in the relationship between OC and ON symptoms (Model 2).

RESULTS

We found that perfectionism partially mediated the relationship between OC and ON symptoms. Specifically, we found that while achievement striving and evaluative concern were associated with OC symptoms, only achievement striving was significantly associated with ON symptoms, mediating the relationship between OC and ON symptoms.

CONCLUSIONS

This study highlighted the role of one key facet of perfectionism (achievement striving) in the aetiology of ON. The role of achievement striving was indicated as a transdiagnostic construct explaining the link between ON and OC symptoms. These findings are discussed in terms of their implications for treatment models, specifically in terms of the potential role of targeting perfectionism in ON treatment.

Intra- and Interpersonal Dimensions of Orthorexia: Preliminary Development and Validation of an Intra- and Interpersonal Effects Scale for Orthorexia

Orthorexia nervosa (ON) is a disorder characterized by dietary restrictions and an obsessive focus on "healthy" eating. The present study analyzes two aspects of ON. One related to the inner experiences of the individual (intrapersonal). The other concerns the impact of ON on interpersonal relationships (interpersonal). The developed scale was named the Intra- and Interpersonal Effects Scale of Orthorexia (IIESO). The analysis showed an average correlation between the INTER and INTRA factors (r = 0.46). Both the INTER and INTRA scales correlated strongly with both subscales of the TOS but weakly with the ORTO-R score. Females obtained higher scores on the INTER scale (p < 0.01), while no differences were shown for the INTRA subscale or the overall scale score (p < 0.01). Subjects using supplements had higher mean scores on the INTER and INTRA subscales and for the total score. Among the analyzed results, the greatest strength effect was shown for the total score on the IIESO scale (INTER+INTRA) and the TOS scale. The questionnaires used to date have not distinguished between behaviors from interpersonal and intrapersonal perspectives. Research on these dimensions could expand our knowledge of the disorder and refine diagnostic criteria.

Relation between orthorexia nervosa and healthy orthorexia: A latent profile analysis

Orthorexic eating behaviors can be conceptualized as a bidimensional construct encompassing an orthorexia nervosa dimension (ON) and a healthy orthorexia dimension (HO). Although variable-centered studies showed that ON and HO are distinguishable orthorexic eating behaviors, the evidence of whether they can co-occur or be distinct in subgroups of individuals is still limited. The present study aimed to address previous person-centered studies' limitations by examining profiles of ON and HO among a convenience sample of 251 French-speaking Canadian adults (85.7% women; Mage = 33.56). Profile membership was examined as function of participants characteristics such as age, gender, body mass index, frequency of physical activity and sports and vegetarianism. The relation between profile membership, intuitive eating and disordered eating attitudes and behaviors was also assessed. Latent profile analysis (LPA) were used to estimate profiles of ON and HO. Results from LPA did not provide support for the distinguishability of ON and HO. Indeed, they revealed the presence of two profiles showing co-occurring levels of ON and HO that only differed quantitatively: low (68.9% of the sample; low levels of ON and HO) or moderate orthorexic eating behaviors (31.1%; moderate levels of ON and HO). Participants who declared being vegetarian and being more frequently involved in physical activities and sports were more likely to belong to the moderate orthorexic eating behaviors' profile. Finally, participants from the moderate orthorexic eating behaviors' profile showed higher levels of disordered eating attitudes and behaviors, whereas those from the low orthorexic eating behaviors' profile showed higher levels of intuitive eating. Findings from the present study question the distinguishability of ON and HO dimensions. They also suggest that, similarly to ON, HO is also related to higher eating and lifestyle preoccupations.

Australian elite sport coaches' mental health literacy of eating disorders, orthorexia, and muscle dysmorphia in athletes: A qualitative study

Athletes have an increased risk of developing eating disorders (EDs) compared to non-athletes. Coaches are in a unique position to identify symptoms and promote timely support; however, research has not yet explored coaches' mental health literacy about DSM-5 EDs and related orthorexia and muscle dysmorphia conditions in elite athletes. Eighteen Australian elite sport coaches from aesthetic, weight-class, and endurance sports participated in individual semi-structured interviews to investigate their mental health literacy of EDs and related conditions. Four themes emerged from the data. Theme 1 (knowledge of EDs and related conditions) highlighted coaches' awareness of maladaptive perfectionism as a key risk factor, limited awareness of EDs without observable weight loss, and conceptualisation of EDs as a nutritional issue. Theme 2 (facilitators to managing EDs) highlighted the helpfulness of building trust with athletes, accessing support staff, emphasising body functionality, and lived experience. Theme 3 (barriers to managing EDs) highlighted coaches' challenges with communicating about body image, responding to denial, and funding constraints. Theme 4 (future ED education and training) highlighted coaches' desire for in-person, interactive training and to support junior-level coaches. These findings may assist in developing tailored educational resources to improve coaches' ability to identify and manage eating-related concerns in athletes.

On Orthorexia Nervosa: A Systematic Review of Reviews

INTRODUCTION

Orthorexia nervosa (ON), characterized by a pathological preoccupation with "extreme dietary purity," is increasingly observed as a mental health condition among young adults and the general population. However, its diagnosis is not formally recognized and has remained contentious.

OBJECTIVE

In this systematic review, we attempt to overview previous reviews on ON, focusing on the methodological and conceptual issues with ON. This would serve both as a summary and a way to highlight gaps in earlier research.

METHODS

This systematic review took reference from the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) reporting guidelines, and using combinations of the search terms ("orthorexia" OR "orthorexia nervosa" OR "ON") AND ("review" OR "systematic review" OR "meta-analysis"), a literature search was performed on EMBASE, Medline and PsycINFO databases from inception up to October 31, 2023. Articles were included if (1) they were written or translated into English and (2) contained information pertaining to the diagnostic stability or validity of ON, or instruments used to measure ON symptoms and behaviors. Only review articles with a systematic literature search approach were included.

RESULTS

A total of 22 reviews were qualitatively reviewed. Several studies have reported variable prevalence of ON and highlighted the lack of thoroughly evaluated measures of ON with clear psychometric properties, with no reliable estimates. ORTO-15 and its variations such as ORTO-11, ORTO-12 are popularly used, although their use is discouraged. Existing instruments lack specificity for pathology and several disagreements on the conceptualization and hence diagnostic criteria of ON exist.

DISCUSSION

Previous reviews have consistently highlighted the highly variable (and contradictory) prevalence rates with different instruments to measure ON, lack of stable factor structure and psychometrics across ON measures, paucity of data on ON in clinical samples, and a need for a modern re-conceptualization of ON. The diagnosis of ON is challenging as it likely spans a spectrum from "normal" to "abnormal," and "functional" to "dysfunctional." "Non-pathological" orthorexia is not related to psychopathological constructs in the same way that ON is.

The various facets of orthorexic eating behavior: five case reports of individuals with supposed orthorexia nervosa

BACKGROUND

Orthorexia nervosa, defined as a fixation on eating healthy according to subjective criteria, is recently being discussed as another variant of disordered eating behavior. Further characteristics are rigid adherence to nutritional rules, anxieties and avoidance behavior in the context of eating as well as a focus on health, not on body shape or weight loss, which is supposed to differentiate orthorexic from other disordered eating behavior. Although diagnostic criteria have been suggested, they have rarely been used in case reports published to date. Hence, the aim of this study was to present five individuals with supposed orthorexia nervosa, using preliminary diagnostic criteria to assess their eating behavior.

CASE PRESENTATION

The five cases (three females, two males) reveal the great variety of disordered eating behavior. Fear of unhealthy overweight (case A), supposed orthorexic eating behavior as a coping strategy for anorexia nervosa (case B), the exclusive consumption of animal products with a total exclusion of fruits and vegetables (case C), the fixation on exercise and athletic goals (case D) as well as a focus on a vegan diet and unprocessed foods (case E) are facets of orthorexia nervosa with varying degrees of impairment.

CONCLUSIONS

It is concluded that orthorexia nervosa manifests itself in very different ways and that more research is needed in order to determine whether it could be a useful additional category of disordered eating behavior.

Dieting, obsessive-compulsive thoughts, and orthorexia nervosa: Assessing the mediating role of worries about food through a structural equation model approach

BACKGROUND

Orthorexia Nervosa (ON) is a condition characterized by an obsessive focus on healthy eating, inflexible dietary rules, and persistent preoccupations with food. Despite it has been recently the subject of increasingly relevant studies, little is known about the mechanisms that might foster ON symptoms.

OBJECTIVE

This study used a structural equation modeling approach to test the mediating effect of thoughts, worries, and preoccupations about food on the relationship that eating disorders (EDs) attitudes (e.g., dieting) and obsessive-compulsive thoughts and symptoms have with ON in a large community sample. It was hypothesized that the effect of dieting and obsessive-compulsive thoughts and symptoms on ON would be partially mediated by the presence of thoughts, worries, and preoccupations about food.

METHODS

Data from a cross-sectional sample of 1328 participants (females = 976) recruited from the general population were asked to fill in an online survey comprising the Eating Attitude Test-26 (EAT-26), the Obsessive-compulsive subscale of the Symptom Checklist-90 Revised (SCL-90R-OC) and the Orthorexia Scale-15 (ORTO-15).

RESULTS

Structural equation models indicated that both obsessive-compulsive thoughts and symptoms and dieting had a direct effect on ON and that food preoccupation partially mediated these relationships.

CONCLUSION

These findings provide novel insight into the nature of ON that could aid its conceptualization and treatment.

Assessing the presence and motivations of orthorexia nervosa among athletes and adults with eating disorders: a cross-sectional study

PURPOSE

Orthorexia nervosa involves restricting diet based on quality rather than quantity. Although orthorexia is well reported in many at-risk populations, limited data addresses its presence in individuals with eating disorder history (EDs) or athletes. We aimed to identify the presence and potential drivers of orthorexia in adults with EDs and endurance athletes, compared to control subjects.

METHODS

Participants ≥ 18y included: people with a diagnosed eating disorder (ED as per DSM-5); endurance athletes (training/competing ≥ 5 h/week); or control subjects. Participants (n = 197) completed an online survey assessing orthorexia (eating habits questionnaire, EHQ), eating motivations (TEMS-B) and compulsive exercise (CET).

RESULTS

ED had the highest orthorexia symptom severity (92.0 ± 3.02, n = 32), followed by athletes (76.2 ± 2.74, n = 54) and controls (71.0 ± 1.80, n = 111) (F (2) = 18.2, p < 0.001). A strong positive correlation existed between weight control motives and higher orthorexia symptom severity (r = 0.54, 95% CI [1.35, 2.36], p < 0.001), while a weak negative association existed between Hunger and Pleasure motives and higher orthorexia symptom severity (r = 0.23, 95% CI [- 2.24, - 0.34], p = 0.008; r = 0.26, 95% CI [- 2.11, - 0.47], p = 0.002, respectively). A moderate positive relationship was found between CET and orthorexia symptom severity (95% CI [1.52, 3.12], p < 0.001).

CONCLUSION

Adults with ED history and endurance athletes have greater orthorexia symptom severity compared to control. Clinicians working with at-risk populations should screen patients and be aware of red-flags of orthorexic traits, desire to control weight, and compulsive exercise behavior.

LEVEL OF EVIDENCE

III: Evidence obtained from cohort studies.

The validation of the Barcelona Orthorexia Scale-Spanish version: evidence from the general population

PURPOSE

To validate the Spanish version of Barcelona Orthorexia Scale (BOS) in general population, analyzing its items and both its internal structure and psychometric properties (internal consistency and temporal stability). In addition, the relationship between ON and external measures of attitudes towards food was assessed.

METHOD

The general population sample consisted of 446 women and 104 men, aged between 18.31 and 69.44 years (M = 36.03; SD = 12.46). Of these, 39 participants answered again the questionnaires after one month from the first application. The assessment instruments were a sociodemographic questionnaire, the BOS, the Eating Attitudes Test-26 (EAT-26) and the Dutch Eating Behavior Questionnaire (DEBQ).

RESULTS

The final version of the BOS is composed of 35 items. Exploratory factor analysis extracted an internal structure of 5 factors (Behavioral, Concern for healthy food, Attitudes and beliefs about food, Vital achievement and Emotional discomfort). The BOS-35 and the factors presented good internal consistency (α = .80-.90), and an adequate temporal stability (r = .62-.88). The highest association was observed between the Emotional Distress (BOS) and the Diet subscale (EAT-26; r = .51).

CONCLUSIONS

This first validation of the BOS has shown adequate psychometric properties, being a valid and reliable instrument to assess ON in the general population. Level of evidence Level II: Evidence obtained from well-designed controlled trials without randomization.

Orthorexia and Orthorexia Nervosa: A Comprehensive Examination of Prevalence, Risk Factors, Diagnosis, and Treatment

Orthorexia nervosa is an emerging and controversial eating disorder characterized by an obsessive preoccupation with healthy eating and an extreme fixation on food purity. Despite growing public interest in orthorexia, its classification as a distinct eating disorder remains a subject of ongoing debate in the mental health community. This paper comprehensively reviews the current literature on orthorexia nervosa, exploring the prevalence rates, risk factors, diagnosis, and treatment options. The paper offers an overview of orthorexia and its historical context and explores the challenges and considerations in diagnosing orthorexia and orthorexia nervosa. Specifically, the distinction between "orthorexia" and "orthorexia nervosa" is a debated issue in eating disorder research due to a lack of clear diagnostic criteria, making it challenging to accurately differentiate between an obsession with healthy eating and a more severe form with potential distress and impairment. Given the absence of formal diagnostic criteria, developing valid and reliable assessment tools is crucial to accurately identify and treat individuals experiencing these disorders. The paper's final section covers the existing treatment approaches for orthorexia nervosa. Overall, the paper highlights the complex and multifaceted nature of orthorexia nervosa. This review contributes to the ongoing discourse surrounding orthorexia and provides valuable insights for clinicians, researchers, and stakeholders in the mental health and eating disorders fields.

U.S. health professionals' perspectives on orthorexia nervosa: clinical utility, measurement and diagnosis, and perceived influence of sociocultural factors

PURPOSE

This study examined U.S. health professionals' perspectives on the clinical utility, measurement, and etiology of orthorexia nervosa (ON).

METHODS

Participants (n = 100) were U.S. health professionals with experience working clinically with eating disorders, including trainees, Ph.D. psychologists, social workers/mental health counselors, and medical health professionals. After reviewing the proposed ON criteria, participants responded to questions regarding the clinical utility, diagnosis, and measurement of ON, and sociocultural influence on the emergence of ON. Views of ON as a useful diagnostic category were examined as a function of participants' current involvement in clinical versus research activities.

RESULTS

Participants mostly (71.9%) agreed that ON should be a distinct clinical diagnosis. Participants who endorsed ON as a valid diagnosis spent more time on clinical work and less time engaged in research compared to participants who disagreed (both ps < 0.05). Approximately 27% of participants believed additional components should be added to the proposed ON diagnostic criteria. Participants indicated that sociocultural factors have considerable influence on the development of ON, namely the diet and weight loss industry, and the perceptions that biological/organic/vegan and low fat/low carb/gluten free food are the healthiest.

CONCLUSION

Professionals who spent more time working clinically with eating disorders were more likely to endorse ON as a unique disorder, and professionals who spent more time on research were more likely to disagree. To the extent that professionals who spend more time on research may shape the narrative around ON more visibly, this study underscores the importance of listening to practitioners' experiences in applied settings.

LEVEL OF EVIDENCE

Level V: Opinions of authorities, based on descriptive studies, narrative reviews, clinical experience, or reports of expert committees.

"Your struggles are valid, you are worthy of help and you deserve to recover": narratives of recovery from orthorexia nervosa

PURPOSE

Limited research has examined recovery processes and conceptualisations of recovery within orthorexia nervosa (ON). This study harnessed Instagram data to examine how people who self-identify with ON use the hashtag #OrthorexiaRecovery and how recovery is represented within this online space.

METHODS

500 textual posts containing #OrthorexiaRecovery were extracted from Instagram. Co-occurring hashtags were analysed descriptively to determine whether this online space is specific to ON, and textual data were analysed using reflexive thematic analysis.

RESULTS

The hashtag analysis indicated that #OrthorexiaRecovery is being used within a wider context of eating disorder recovery and awareness, but also provides deep insights into experiences of recovery from ON. The thematic analysis generated five themes: the invisibility of orthorexia; a turbulent and continuous process; finding food freedom; from compulsive exercise to intuitive movement; a community of support. Our findings suggest that people with self-reported ON experience recovery as a continuous process and the current invisibility of ON within diagnostic criteria and wider society impedes recovery. While working towards recovery, users aimed to be free from diet culture, become more attuned to their bodies, and develop more adaptive relationships with food and fitness. Users noted a general lack of support for people with ON and so used this online space to create a supportive community, though some content was potentially triggering.

CONCLUSION

Our findings highlight the importance of increased recognition of ON and the potential value of targeting societal norms and harnessing social identity resources within therapeutic interventions for ON.

Conceptualisations of health in orthorexia nervosa: a mixed-methods study

PURPOSE

Limited research has explored conceptualisations of health and healthy eating in orthorexia nervosa (ON). This mixed-methods study aimed to investigate how 'health' and 'healthy eating' are conceptualised by individuals at risk for ON. This study examined the potential relationships between health anxiety, beliefs about health controllability and orthorexic symptomatology in our broader sample.

METHODS

A total of 362 participants took a survey on health anxiety (measured with the HAQ), beliefs about the controllability of one's own health (IMHLC) and ON symptomatology (E-DOS and EHQ). Participants 'at risk' for ON (n = 141), also completed an online qualitative survey about conceptualisations of health and healthy eating. Qualitative data were analysed using thematic analysis (part A). The PROCESS macro for SPSS was used for the quantitative analysis (part B).

RESULTS

Conceptualisations of health and healthy eating were complex. Four themes were generated from our qualitative data: 'health is more than thin ideals', 'healthy food equals healthy mind', 'a body that works for you' and 'taking control of your body'. Our quantitative analysis revealed that health anxiety and beliefs in health controllability independently predicted ON symptomatology.

CONCLUSION

A richer understanding of what health means in the context of ON is important, given the centrality of this concept to the proposed classification of this disordered eating style. Our findings highlight that both health anxiety and health controllability are important targets for future investigation, given their potential relevance to the aetiology and treatment of ON.

LEVEL OF EVIDENCE

Level V, based on a descriptive study.

A consensus document on definition and diagnostic criteria for orthorexia nervosa

PURPOSE

Since the term orthorexia nervosa (ON) was coined from the Greek (ὀρθός, right and ὄρεξις, appetite) in 1997 to describe an obsession with "correct" eating, it has been used worldwide without a consistent definition. Although multiple authors have proposed diagnostic criteria, and many theoretical papers have been published, no consensus definition of ON exists, empirical primary evidence is limited, and ON is not a standardized diagnosis. These gaps prevent research to identify risk and protective factors, pathophysiology, functional consequences, and evidence-based therapeutic treatments. The aims of the current study are to categorize the common observations and presentations of ON pathology among experts in the eating disorder field, propose tentative diagnostic criteria, and consider which DSM chapter and category would be most appropriate for ON should it be included.

METHODS

47 eating disorder researchers and multidisciplinary treatment specialists from 14 different countries across four continents completed a three-phase modified Delphi process, with 75% agreement determined as the threshold for a statement to be included in the final consensus document. In phase I, participants were asked via online survey to agree or disagree with 67 statements about ON in four categories: A-Definition, Clinical Aspects, Duration; B-Consequences; C-Onset; D-Exclusion Criteria, and comment on their rationale. Responses were used to modify the statements which were then provided to the same participants for phase II, a second round of feedback, again in online survey form. Responses to phase II were used to modify and improve the statements for phase III, in which statements that met the predetermined 75% of agreement threshold were provided for review and commentary by all participants.

RESULTS

27 statements met or exceeded the consensus threshold and were compiled into proposed diagnostic criteria for ON.

CONCLUSIONS

This is the first time a standardized definition of ON has been developed from a worldwide, multidisciplinary cohort of experts. It represents a summary of observations, clinical expertise, and research findings from a wide base of knowledge. It may be used as a base for diagnosis, treatment protocols, and further research to answer the open questions that remain, particularly the functional consequences of ON and how it might be prevented or identified and intervened upon in its early stages. Although the participants encompass many countries and disciplines, further research will be needed to determine if these diagnostic criteria are applicable to the experience of ON in geographic areas not represented in the current expert panel.

LEVEL OF EVIDENCE

Level V: opinions of expert committees.

Exercise dependence and orthorexia nervosa in Crossfit: exploring the role of perfectionism

Physical exercise and healthy diet have a positive effect on health. However, the pathological dimension of both behaviors, namely exercise dependence and orthorexia nervosa, can lead to negative results. So far, literature on these behaviors in the context of high-intensity sports is limited. The present study aims for investigating exercise dependence and orthorexia nervosa in a sample of Crossfit athletes, as well as examining the mediating role of perfectionism in their manifestation.The sample consisted of 110 people who attended Crossfit programs and 131 active gym members. The Exercise Dependence Scale was used to assess exercise dependence, the ORTO-15 to assess orthorexic behavior and the Almost Perfect Scale to evaluate perfectionism.19.8% of crossfitters and 3.8% of gym members were at risk for exercise dependence. 11.7% of participants in the Crossfit group and 10% of participants in the control group had orthorexic symptoms. An association was found between the scores on the two behaviors. In addition, the dimension of perfectionism high standards predicted obligatory exercise and orthorexia nervosa, while the dimension of discrepancy predicted only exercise dependence.The study suggests that exercise dependence is more evident in Crossfit compared to gym athletes and may be accompanied by orthorexic symptoms. Orthorexia nervosa is a noticeable phenomenon in the population of active exercisers. Perfectionism is a risk factor for obligatory exercise and orthorexia. A more demanding selection of target populations is encouraged in order to better understand exercise dependence, orthorexia nervosa and their personality background.

Orthorexia nervosa and dieting in a non-clinical sample: a prospective study

PURPOSE

Orthorexia Nervosa (ON) is characterised by excessive attention to a dietary regimen perceived as healthy. A critical factor in the distinction between ON and other eating disorders (EDs) is the dichotomy of quality-versus-quantity of food intake. We investigated whether specific types of diet or dieting frequency are associated with orthorexic features, explored the overlap between ON and EDs symptoms, and examined which constructs are predictive of ON after 6 months.

METHODS

A total of 1075 students (75.1% female, mean age 20.9) completed a set of questionnaires assessing Orthorexia, Eating Disorders, Obsessions and Compulsions, Anxiety and Depression; 358 individuals (79.9 female, mean age 20.9) agreed to participate in the study and completed the same questionnaires after 6 months. Different regression models were defined to investigate our hypothesis.

RESULTS

Findings suggest that ON is associated with the number and type of diets followed over a lifetime. Moreover, participants with EDs, body dissatisfaction, or a dysfunctional idea of thinness are more likely to report a greater degree of ON features. After 6 months, the best predictors of ON characteristics are the same ON characteristics assessed at the first administration, with a significant role in the ideal of thinness.

CONCLUSIONS

ON is more frequent in individuals with a previous diagnosis of EDs and in individuals who followed a restrictive diet or a vegan/vegetarian one; the number of lifetime diets, beliefs, and behaviors related to the ideals of thinness or body dissatisfaction is common features of ON. Moreover, considering that having ON features in the past is the best ON predictor in the present, we can presume that ON is a construct stable over time.

LEVEL OF EVIDENCE

Level IV: Evidence obtained from multiple time series analysis such as case studies. (NB: Dramatic results in uncontrolled trials might also be regarded as this type of evidence).

Functional gastrointestinal symptoms and increased risk for orthorexia nervosa

PURPOSE

Recent guidelines point out the possible risk for orthorexia nervosa in functional gastrointestinal disorders, however, to date, no study has investigated this association. The present study aimed to explore the potential relationship between irritable bowel syndrome-related functional gastrointestinal symptoms and certain maladaptive eating behaviours, such as symptoms of orthorexia nervosa and emotional eating.

METHODS

A sample of 644 Hungarian volunteers (M_age = 22.37; SD_age = 3.95) completed a survey with the following questionnaires: the Rome IV Diagnostic Questionnaire (R4DQ) for adults-Irritable bowel syndrome module for the measurement of functional gastrointestinal symptoms, the Hungarian version of the ORTO-15 questionnaire (ORTO-11-Hu) to assess symptoms of orthorexia nervosa, the Three-Factor Eating Questionnaire (TFEQ) Emotional Eating subscale to measure symptoms of emotional eating and the Short Health Anxiety Inventory (SHAI) for the assessment of health anxiety. Spearman's rank correlation was used to explore the associations between the measured variables, and structural equation modeling was used to test the proposed mediation models.

RESULTS

Functional gastrointestinal symptoms were positively related to symptoms of orthorexia nervosa and emotional eating. The relationship between functional gastrointestinal symptoms and symptoms of orthorexia nervosa was partially mediated by health anxiety, while the association between functional gastrointestinal symptoms and symptoms of emotional eating was partially mediated by symptoms of orthorexia nervosa.

CONCLUSION

Our findings highlight the possible risk for developing orthorexic symptoms in functional gastrointestinal symptoms, which could lead to other types of disordered eating patterns, such as emotional eating. The results also underscore the potential role of health anxiety in these relationships.

LEVEL OF EVIDENCE

Level V (descriptive cross-sectional study).

Orthorexia nervosa and Instagram: exploring the Russian-speaking conversation around #opтopeкcия

This mixed-methods study explored the conversation around orthorexia nervosa (ON) on Instagram from a Russian-speaking perspective. Two quantitative data sources were implemented; a comparative content analysis of posts tagged with #opтopeкcия (n = 234) and #orthorexia (n = 243), and an online questionnaire completed by Russian-speakers (n = 96) sharing ON-related content on Instagram. Additionally, five questionnaire participants were interviewed, four of which identified with having (had) ON. Russian-speakers who share ON-related content on Instagram are primarily female, around their late-twenties, and prefer Instagram over other platforms. They describe people with ON as obsessed with correct eating, rather than healthy or clean eating. Instagram appears to have a dual effect; it has the potential to both trigger the onset of ON and encourage recovery. Positive content encourages a healthy relationship with food, promotes intuitive eating, and spread recovery advice. Harmful content, in turn, emphasizes specific diet and beauty ideals. Russian-speaking users mainly post pictures of food, followed by largely informative text that explains what ON is, and what recovery may look like. Their reasons for posting ON-related content are to share personal experiences, support others in recovery, and raise awareness about ON. Two main target audiences were people unaware of ON and people seeking recovery support. The relationship between ON and social media is not strictly limited to the global north. Thus, it may be valuable to further investigate non-English-speaking populations currently underrepresented in ON research.Level of evidence: Level V, descriptive study.

Lifestyle-Related Risk Factors of Orthorexia Can Differ among the Students of Distinct University Courses

Orthorexia nervosa (ON) is defined as the excessive attention on healthy eating, and studies especially focused on food quality ON prevalence in university students can be extremely variable. The objective of this study is to investigate whether there was a difference in ON risk between health-scientific, economic-humanistic, sport sciences and dietetics and nutrition students, and to evaluate if lifestyle-related ON risk factors (dieting, physical activity, drugs and supplements use) could have an impact in different ways in determining ON risk among students attending these four programs. Participants were recruited at the University of Pavia and received a two-section questionnaire including demographic and lifestyle information and the ORTO-15 questionnaire. A total of 671 students (54% F e 46% M) completed the questionnaire (median age 21.00 (IQR 20.00−23.00), median BMI 21.77 kg/m2 (IQR 20.06−23.66 kg/m2)). The 31.2% had ORTO-15 test scores < 35, and were considered at risk of having ON. No differences were found in ON risk among the students attending the four university courses. Dieting was confirmed as the major ON risk factor for health-scientific, economic-humanistic and sport sciences students. The type of sport practiced was an important determinant of ON risk only for the economic-humanistic course, while supplements use was statistically different between sport sciences students with or without ON. Our findings may suggest that lifestyle-related risk factors of orthorexia can differ among the students of distinct university courses, but these results need to be supported by further longitudinal and prospective studies.

Orthorexia Nervosa in Adolescents and Young Adults: A Literature Review

Adolescents are a nutritionally vulnerable population; eating disorders are more common among adolescents and young adults. Orthorexia nervosa (ON) is a non-formally recognized condition characterized by an obsessive preoccupation with eating healthy and "pure" foods; the quality and not the quantity of food is pivotal in ON. ON is a complex entity which can be associated with severe diet restrictions, a negative impact on social relationships, and with physical and mental health conditions, including obsessive-compulsive disorder. In light of this, a literature review regarding the background, diagnosis, features, risk factors, interplay with the social media, and management of ON is presented in this article, with a focus on adolescents and young adults.

Associations between orthorexia, disordered eating, and obsessive-compulsive symptoms: A systematic review and meta-analysis

OBJECTIVE

Orthorexia nervosa (ON) is defined as an unhealthy obsession with healthy eating, focusing on concerns regarding food quality and composition. Currently, there is still a lack of consensus about a clear definition of the construct. Specifically, it has yet to be clarified whether ON pertains to eating disorders (EDs) or obsessive-compulsive disorder (OCD) spectrum. Hence, we conducted a systematic review and meta-analysis addressing the magnitude of the association between these groups of symptoms.

METHOD

PubMed, Medline, SCOPUS, PsychINFO, CINAHL, and Web of Science were searched from inception up to February 2021. Data from individual studies were pooled using a random-effects model. Pearson's r was used as the effect size metric. Subgroup analyses were conducted exploring the role of ON-related instruments, body mass index, study quality, and cultural context.

RESULTS

Thirty-six studies met the eligibility criteria and were included in the meta-analysis. Random-effects model yielded a moderate association between ON and EDs symptoms with an overall effect size of r = .36 (p < .001; 95% confidence interval [CI] = 0.30-0.43). On the other hand, the results showed a small association between ON and OCD symptoms with a mean effect size of r = .21 (p < .001; 95% CI = 0.15-0.27).

DISCUSSION

Meta-analytic findings showed that ON symptoms are more associated to EDs compared to OCD. Despite the similarities, the nonhigh magnitude of the pooled correlations suggests that ON might be different from pre-existing EDs and OCD. Hence, ON might be treated as a stand-alone ED and included as an emerging syndrome in the DSM classification.

Adherence to Mediterranean Diet and Tendency to Orthorexia Nervosa in Professional Athletes

Among many lifestyle components that professional athletes have to follow, nutrition is gradually growing to be one of the key factors for achieving and maintaining optimal sport performance. The Mediterranean diet (MD) is recognized as one of the healthiest dietary patterns worldwide; however, data regarding adherence to the MD among professional athletes are still scarce. Moreover, with the imposed need for a healthy diet among professional athletes, orthorexia nervosa (ON) could become a rising issue. This cross-sectional study included 150 professional athletes and 150 matched recreational athletes from Croatia. Four questionnaires were used for the assessment: general information, a test for the diagnosis of ON (ORTO-15), the International Physical Activity Questionnaire (IPAQ) and the Mediterranean Diet Serving Score (MDSS). Significantly more professional athletes were adherent to the MD (p < 0.001) and had a tendency to ON (p < 0.001). Moreover, there was a significant negative correlation between the ORTO-15 score and the total MET min/week score (r = −0.524, p < 0.001) and a significant positive correlation between the MDSS score and the total MET min/week score in the professional athlete group (r = 0.478, p < 0.001). All of these results imply that professional athletes are more concentrated on their dietary patterns than recreational athletes, and that due to this dedication, they possibly have a higher adherence to the MD but also possibly a higher risk for developing ON. However, the association between ON and the MD should be further addressed in the future.

Intuitive eating and its association with psychosocial health in adults: A cross-sectional study in a representative Canadian sample

Intuitive eating has been proposed as a weight-inclusive, effective, and sustainable approach to eating that benefits psychosocial health compared to traditional restrictive dieting. This cross-sectional study examined the associations of intuitive eating with psychosocial health indicators and demographic characteristics in a representative Canadian sample of adults (n = 1,466). Participants completed an online survey consisting of validated measures on intuitive eating and psychosocial health. Average participant engagement in intuitive eating was moderate with males eating more intuitively than females. Intuitive eating was higher in participants ≥65 years compared to those <65 years, and no differences were found among ethnicities. Correlation tests revealed that intuitive eating was positively correlated with self-esteem and negatively correlated with perceived sociocultural pressure, weight concern, disordered eating behaviour, and cognitive restraint in eating. Compared to males, intuitive eating in females was more strongly correlated with sociocultural pressure and weight concern. Regression analyses showed that intuitive eating interacted with sex in predicting sociocultural pressure and weight concern after controlling for age and ethnicity. Sex-stratified regressions resulted in intuitive eating scores being significantly associated with all psychosocial health indicators investigated. This study provides evidence that intuitive eating is associated with better psychosocial health in a sex-balanced, ethnically diverse Canadian adult sample. Study findings suggest that intuitive eating can be an accessible approach to support a healthy lifestyle and demographic differences should be considered when designing interventions. Future studies need to determine whether intuitive eating improves eating behaviour and reduces disordered eating as well as interacts with other health-related behaviours at a population level.

The Mediating Role of Orthorexia in the Relationship between Physical Activity and Fear of COVID-19 among University Students in Poland

Previous research showed that the COVID-19 pandemic has a significant impact on the wellbeing and lifestyle of populations worldwide, including eating and physical activity (PA) patterns. The present study aims to examine the mediating effect of orthorexia on the relationship between PA and fear of COVID-19. A sample of 473 university students from Poland of a mean age of 22 years (M = 22.04, SD = 2.90, 47% of women) participated in the cross-sectional online survey study. Continuous variables were measured using the Fear of COVID-19 Scale (FCV-19S) and the Test of Orthorexia Nervosa (TON-17), while categorical variables divided participants into the physically active and inactive group regarding WHO criteria (150 min per week). Weak gender differences were found. Active people showed lower fear of COVID-19 and higher orthorexia scores than those inactive. Orthorexia was found as a suppressor variable, which increases the negative predictive value of PA on fear of COVID-19. The model of cooperative suppression explained 7% of FCV-19S. The mechanism of mediation showed that health-related behavior could help reduce fear of COVID-19, but caution is necessary for people with addictive behavior tendencies. Universities should support university students by offering programs focused on increasing healthy lifestyles and improving wellbeing.

Alike and different: Associations between orthorexic eating behaviors and exercise addiction

OBJECTIVE

Symptoms of exercise addiction, a state of compulsively engaging in intense exercise, and orthorexic eating attitudes, the obsession with eating only healthy foods, often occur together. It is assumed that some more general psychological traits underlie this association. Main aim of this report was to examine similarities and differences between orthorexic eating and addictive exercising.

METHOD

Six hundred and eight individuals completed an online survey (mean age: 27.5, SD = 11.0 years; 76.5% women) measuring exercise addiction (Exercise Addiction inventory, EAI), orthorexic eating (Düsseldorfer Orthorexie Skala, DOS), personality domains (Big-Five Inventory-10), anxiety and depression (Hospital Anxiety and Depression Scale).

RESULTS

Correlations between the DOS and EAI were .43 in women and .62 in men. Structural equation models identified gender-specific as well as behavior-specific psychological correlates. Among women, anxiety correlated with both EAI and DOS. In addition, the DOS correlated with depression and neuroticism while the EAI correlated with conscientiousness. In men, both scales were associated with conscientiousness and the EAI also correlated with extraversion. Clusterability analysis provided no evidence for clusters based on DOS and EAI.

DISCUSSION

Present results showed a substantial correlation between addictive exercising and orthorexic eating, however, coefficients were smaller than expected and appeared higher in men. Both behaviors shared few psychological traits (anxiety in women, conscientiousness in men) thereby questioning the assumption of a similar origin. Additionally, gender-specific psychological correlates point to the need for different disease management approaches in women and men.

Misinformation, thin-ideal internalization, and resistance to treatment: an interpretive phenomenological analysis of the experience of orthorexia nervosa

PURPOSE

Orthorexia nervosa (ON) is an emerging pattern of disordered eating which may be driven by a pathological desire to consume only highly nutritious foods, absent concern over body weight, as is noted in anorexia nervosa (AN). This study seeks to clarify the development and progression of ON and add to researchers' understanding of this potential disorder.

METHOD

Utilizing Interpretive Phenomenological Analysis to guide data collection and analysis, interviews were conducted with 18 individuals who self-identified as having ON.

RESULTS

Participants described a clear distinction between orthorexia nervosa and clinically recognized eating disorders, with which they had prior experience. In addition, they demonstrated patterns of inflexible thinking that guided their perceptions of themselves and others. As a result, participants rapidly integrated newly acquired nutritional information, which led to escalations in restriction, social isolation, and physical symptoms of malnutrition. While prior findings on the relationship between ON and weight are conflicting, previously proposed criteria for ON emphasize an absence of weight-related concerns. The results of the present study suggest that weight control is a primary motivating factor in the escalating pattern of restriction.

CONCLUSION

The nuanced results from this work evidence the value of interpretive qualitative approaches to improve understanding of ON. In particular, participants' described inflexible thinking with respect to eating behaviors may help inform or revise screening instruments and provide important insights for treatment of ON.

LEVEL OF EVIDENCE

Level V, qualitative descriptive research.

Using Behavioural Reasoning Theory to Explore Reasons for Dietary Restriction: A Qualitative Study of Orthorexic Behavioural Tendencies in the UK

Orthorexia Nervosa (ON) has gained increased attention in academia since 1997. However, like other “Exia” conditions, there is debate around its inclusion in the Diagnostic and Statistical Manual of Mental Disorders. This study aimed to examine the experiences of those following a diet indicative of ON in the United Kingdom. This information is essential to the development of diagnostic criteria and classification of ON. Behavioural Reasoning Theory was used to explore reasons contributing to the development of ON. Ten individuals (two males and eight females), aged 23–35 years, took part in semi-structured interviews. Inductive thematic analysis was used to analyse the results. Four themes emerged from the data—journey, social, rules/control, and ethical considerations which highlighted contributing factors to the development of ON behaviours, the impact of these behaviours on individuals' social lives, and a strive for control. These findings are the first to suggest that ON involves a more complex set of behaviours than current definitions and proposed diagnostic criteria suggest and highlight the need to consider a variety of reasons for restricted diet when developing diagnostic criteria, screening tools, and classification in the DSM.

Validation and Polish Adaptation of the Authorized Bratman Orthorexia Self-Test (ABOST): Comparison of Dichotomous and Continuous Likert-Type Response Scales

Purpose

Although research on orthorexia nervosa (ON) has developed in recent years, there exists a continuous need to develop valid tools to assess ON risk, according to strict diagnostic criteria. The present study aims to conduct Polish adaptation and validation of the Authorized Bratman Orthorexia Self-Test (ABOST), through a comparison of dichotomous and continuous Likert response scales.

Participants and Methods

This cross-sectional study involved 472 people with mean age of 27 years (ranging between 18 and 78 years, M = 26.88, SD = 10.40). The survey included demographic questions and measures of orthorexia (the ABOST and ORTO-15), eating disorders (EAT-26), body mass index (BMI), obsessive–compulsive disorder (OCI-R), anxiety (GAD-7), and depression (PHQ-9). The following statistical tests were performed to explore the psychometric properties of the ABOST: descriptive statistics, Student’s t-test, Pearson’s correlation, Cronbach’s α reliability, exploratory factor analysis (EFA), and confirmatory factor analysis (CFA).

Results

The ABOST using a five-point Likert scale for responses demonstrated good psychometric properties. The CFA goodness-of-fit indices confirmed the one-factor solution. Positive correlations were found between the ABOST and the ORTO-15, EAT-26, OCI-R, GAD-7, and PHQ-9. Women scored higher in the ABOST than men, while BMI was unrelated to the ABOST.

Conclusion

The ABOST using the Likert scale provides a reliable and valid instrument to assess ON risk, as indicated by the face, structural, and convergent validity results. However, more research in various countries is needed, in order to verify the results of this study.

The experience of orthorexia from the perspective of recovered orthorexics

PURPOSE

Orthorexia is a proposed disorder that involves a pathological obsession with healthy eating. The condition has received much attention in popular media in recent years, but more empirical research is needed. Currently, orthorexia is an emerging construct with multiple proposed versions of diagnostic criteria, and there is confusion regarding the exact symptoms and pathology. This qualitative study aimed to explore the experiences of orthorexia from the perspective of recovered persons, as defined by Dunn and Bratman's 2016 criteria (Eat Behav 21:11-17, 2016).

METHODS

Eight participants from around the world were interviewed via Skype. These interviews were analysed using a descriptive and interpretive thematic analysis (Elliott and Timulak. A handbook of research methods for clinical and health psychology. Oxford University Press, London, pp 147-159, 2005). Informed consent was obtained from all participants.

RESULTS

Data analysis revealed four domains: (1) strong external influences; (2) psychological effects; (3) interpersonal functioning effects; and (4) classic eating disorder (ED) behaviours and processes. Some symptoms mirrored those seen in EDs and in obsessive compulsive disorder.

CONCLUSIONS

Orthorexia negatively impacted participants' physical, psychological, and social health. Additional research exploring valid and reliable screening instruments, body image, and psychological functioning would help to further understand this proposed disorder.

LEVEL OF EVIDENCE

Level V, qualitative interview study.

The Polish version of the Düsseldorf Orthorexia Scale (PL-DOS) and its comparison with the English version of the DOS (E-DOS)

PURPOSE

Although orthorexia nervosa, the fixation on health-conscious eating behaviour, was first described in the 90 s, there is no clear understanding whether existing ON measures are appropriate for its assessment. The objectives of the present study were to: (1) examine the psychometric properties of the Polish version of the DOS (PL-DOS) and to compare the PL-DOS with the English version of the DOS (E-DOS) as well as (2) evaluate the prevalence of ON among Polish university students and compare the prevalence rates of ON among Polish and U.S. students.

METHODS

Four-hundred and twelve students (77.2% female) with a mean age of 24.62 years (SD = 6.86) participated in the present study. All participants completed the Polish version of the Düsseldorf Orthorexia Scale (PL-DOS), the Eating Habits Questionnaire (EHQ) and the Eating Disorder Inventory (EDI).

RESULTS

Reliability analysis for the PL-DOS showed strong internal consistency with a Cronbach's alpha coefficient of 0.840 and a coefficient omega of 0.840, 95% CI [0.808, 0.866]. Significant correlation coefficients were found between the PL-DOS and all subscales of the EHQ. Confirmatory factor analysis showed that the one-factor model had poor fit. Polish students had an ON prevalence rate of 6.6%, lower than that of U.S. students (8%).

CONCLUSIONS

Our findings validate the use of the PL-DOS as an appropriate ON measure for a Polish population.

LEVEL OF EVIDENCE

Level V, cross-sectional descriptive study.

Obsessive healthy eating and orthorexic eating tendencies in sport and exercise contexts: A systematic review and meta-analysis

BACKGROUND

Orthorexia Nervosa (ON) and exercise addiction (ExAdd) are two phenomena believed to overlap. We conducted a meta-analysis exploring the link between ON and (addictive) exercise behaviors.

METHODS

A systematic review of major databases and gray literature was carried out for studies reporting on ON and (addictive) exercise behaviors. Random effects meta-analyses were undertaken calculating correlations between ON and (addictive) exercise behaviors. A sub-group analysis investigated gender differences.

RESULTS

Twenty-five studies with 10,134 participants (mean age = 25.21; 56.4% female) were included. Analyses showed a small overall correlation between ON and exercise (21 studies, r = 0.12, 95% CI |0.06-0.18|) and a medium overall correlation between ON and ExAdd (7 studies, r = 0.29, 95% CI |0.13-0.45|). Gender differences were negligible.

CONCLUSIONS

Orthorexic eating correlated slightly and moderately with exercise and ExAdd, respectively, expressing some unique and shared variance of these behaviors. While this does not suggest ON and addictive exercising to be independent, it does not indicate substantial comorbidity. Future research should focus on clinical relevance, underlying mechanisms, vulnerability, and risk factors.

How Healthy Are Health-Related Behaviors in University Students: The HOLISTic Study

The aim of this cross-sectional study was to assess the health-related behaviors among university students, with emphasis on health sciences students from Croatia, Italy, Lebanon, Poland, Romania, Spain and Turkey. We included 6222 students in Medicine, Dentistry, Nursing, Pharmacy, Nutrition and Dietetics, Sports Sciences, Veterinary, and Economics enrolled between April 2018 and March 2020. We assessed dietary patterns, sleeping habits, physical activity and perceived stress among students by means of validated questionnaires. The median age ranged between 19 and 24 years, smoking prevalence between 12.0% and 35.4%, and body mass index (BMI) ranged between 21.1 and 23.2 kg/m2. Breakfast was less often and more often consumed daily in Turkey (36.7%), and Italy (75.7%), respectively. The highest Mediterranean diet score was recorded in Spain and Italy, and the lowest in Turkey, followed by students from Croatia, Lebanon, Poland and Romania. Sleep duration, physical activity and stress perception also differed between countries. Multivariable regression analysis revealed a small, but positive association between BMI and several characteristics, including age, female gender, smoking, physical activity, mobile phone use, and perceived stress. A negative association was found between BMI and sleep duration on non-working days. Self-rated health perception was positively associated with female gender, breakfast, physical activity, and time spent studying, and negatively with BMI, smoking and stress. Our results demonstrated diverse habits in students from different countries, some of which were less healthy than anticipated, given their educational background. Greater emphasis needs to be placed on improving the lifestyle of these adolescents and young adults, who will be tomorrow's healthcare workers.

Pathological Preoccupation with Healthy Eating (Orthorexia Nervosa) in a Spanish Sample with Vegetarian, Vegan, and Non-Vegetarian Dietary Patterns

Orthorexia nervosa (ON) has been defined as an obsessive and pathological attitude towards healthy nutrition. The aim of this study was to compare individuals who followed a vegan, vegetarian, and omnivore diet in terms of ON behaviors and to examine their prime motivations, attitudes, and behaviors towards food. The Spanish version of the ORTO-15 test — ORTO-11-ES — and the Food Choice Questionnaire (FCQ-SP) were used with a demographic questionnaire in an online survey disseminated among the social networks of different vegetarian associations and the general population. Of 466 individuals, 55% followed an omnivore diet, 23.5% were vegetarian and 21.7% were vegan. Results revealed relationships between type of diet and FCQ-SP dimensions for: health and natural content (H = 8.7, p < 0.05), sensory appeal (H = 11.4, p < 0.01), weight control (H = 40.4, p < 0.01), and familiarity (H = 37.3, p < 0.01). Our results confirm the findings of recent studies showing that individuals who follow a vegan or vegetarian diet are more likely to develop a pathological preoccupation with healthy eating versus omnivores. Further studies are required to determine the potential lines of action for the prevention of ON.

What are people's experiences of orthorexia nervosa? A qualitative study of online blogs

PURPOSE

Orthorexia nervosa (ON) is a proposed new eating disorder, used to describe a pathological obsession with healthy or 'clean' eating. Although some quantitative research has been carried out in ON, very little qualitative work has been published to date to explore individual experiences of ON. Thus, this study aimed to explore individuals' personal experiences of ON, as described in online blogs.

METHODS

Fifteen women bloggers, who self-identified as having ON, consented for their blog entries to be analysed in this study. Forty pre-existing blog entries describing the first-person experiences of ON were analysed using thematic analysis.

RESULTS

Three key themes were discussed: (1) initial motivations for a healthier lifestyle, (2) fuelling the problem-social influences, and: (3) when healthy becomes unhealthy. Bloggers described the role of social messages, comparison with others around ideas of 'healthiness', as well as confusion around diagnosis as factors influencing their disordered eating. They also described the exacerbating impact of perfectionism and perceived control, as well as a confirmatory cycle of fear and avoidance. For some bloggers, increased physical symptoms in response to feared foods provided confirmation for these fears, further exacerbating food avoidance.

CONCLUSION

Whilst the debate around the diagnosis of ON continues, these bloggers' accounts suggest that ON is experienced as a legitimate, debilitating disorder, worthy of clinical and research investigation. This study provides evidence of some of the potential triggers and maintaining factors for this disordered eating style.

LEVEL OF EVIDENCE

Level V, qualitative descriptive study.

Evaluation of Orthorexia Nervosa and Symptomatology Associated with Eating Disorders among European University Students: A Multicentre Cross-Sectional Study

The objectives of the present study were to (1) evaluate prevalence of orthorexia nervosa (ON) in university students in Spain and Poland, (2) assess differences in ON and eating disorder (ED) pathology in both samples and (3) examine the relationship between ON and ED symptoms among Spanish and Polish university students. Eight hundred and sixty university students participated in the present study (M_age = 21.17 ± 3.38; M_BMI = 22.57 ± 3.76). The Spanish and Polish samples comprised 485 and 375 students, respectively. The Düsseldorf Orthorexia Scale and the Eating Disorder Inventory were used in the present study. ON prevalence rates of 2.3% and 2.9%, respectively, are found in the Spanish and Polish samples. Compared to Polish students, Spanish university students reported increased drive for thinness and lower body dissatisfaction, lower level of ineffectiveness and lower level of interpersonal distrust. ON was positively related to drive for thinness, bulimia, body dissatisfaction, perfectionism interoceptive awareness (in both Spanish and Polish students) and ineffectiveness (in Spanish students). Our findings suggest that ON significantly overlaps with ED symptoms, which is in line with recent studies. Longitudinal studies are needed to assess how ON develops in a sample of young adults and whether it develops in isolation of or in parallel with ED pathology.

Orthorexic eating in women who are physically active in sport: A test of an objectification theory model

The present study tested an objectification model of orthorexic eating (i.e., pattern of disordered eating characterized by a preoccupation with food quality and purity, ritualistic styles of eating, avoidance of foods considered unhealthy, and compulsive evaluation of the source and nutritional content of foods) in women who are physically active in sport. A community sample of women physically active in sport (N = 228) completed an online survey with measures of orthorexic eating, phenomenological and appearance-based self-objectification, phenomenological body shame, sport-based perfectionism, and athletic identity. Parallel mediation analysis (PROCESS; Model 4) demonstrated a significant indirect effect (ab) of phenomenological self-objectification on orthorexic eating through phenomenological body shame (b = -0.10, 95 % percentile bootstrap confidence interval (PB CI): -0.15, -0.06), adjusting for three covariate measures. The direct effect (c') of phenomenological self-objectification on orthorexic eating was not significant (b = 0.02, 95 % PB CI: -0.07, 0.10). The findings support an objectification theory model of orthorexic eating in community women who participate in sport.

Identifying the Profile of Orthorexic Behavior and "Normal" Eating Behavior with Cluster Analysis: A Cross-Sectional Study among Polish Adults

Although the amount of research about orthorexia nervosa (ON) has grown in the last two decades, to date, research on ON remains inconsistent. More is known about some behavioral characteristics of ON and its prevalence but nothing is known about the profile analysis behind this pathological eating behavior maintenance. Therefore, the objective of the present study was to determine the profiles of the participants in terms of eating behaviors, eating disorder psychopathology, obsessive-compulsive disorder symptoms and physical activity as well as check their association with ON. The sample was composed of 229 Polish female and male adults. Our findings showed three clusters and four-related factors (obsessive-compulsive disorder features; inappropriate eating and body-related behaviors; psychological and affective traits of eating disorders; perfectionism and behaviors associated with weight maintenance or weight loss). In our sample, a higher percentage of adults belonging to cluster 1 had no ON, whereas a higher percentage of adults belonging to cluster 3 had ON. Our results emphasize the possibility to target pathological eating behaviors and obsessive-compulsive disorder (OCD) symptoms in ON in psychological intervention.

Traits of orthorexia nervosa and muscle dysmorphia in Italian university students: a multicentre study

PURPOSE

This study aimed to evaluate the prevalence of traits of orthorexia nervosa (ON) and muscle dysmorphia (MD) in a group of undergraduates, investigate the associations between the risk of these conditions and the type of university course attended, the individual characteristics (gender, BMI, amount of physical activity, supplements and medicines use, dieting) and the risk of eating disorders (EDs).

METHODS

A self-reported questionnaire consisting of a socio-demographic section and three tests validated for the evaluation of a risk of ON (ORTO-15), MD (MDDI-ITA) and EDs (EAT-26) was completed by 918 students from three Italian universities.

RESULTS

29.0% of participants demonstrated traits of ON and 5.0% of MD, without differences in prevalence in the three areas of study investigated (health-scientific, economic-humanistic, sport sciences); students of sport sciences exhibited a significantly higher score for MDDI-ITA (F = 6.493, p = 0.002). Participants with ON and MD traits were more on a diet (OR = 0.47, p ≤ 0.001 and OR = 0.428, p = 0.020, respectively) and showed a higher prevalence of EDs risk (OR = 3.55, p < 0.001 and OR = 10.23, p ≤ 0.001, respectively). The simultaneous presence of ON, MD, and EDs traits was seen in 5.4% of the students and the three test scores were correlated.

CONCLUSIONS

The prevalence of ON and MD traits was found similar to that reported in the literature on undergraduates. Some associations observed improvement in the knowledge about these conditions, especially the association of participants with ON and MD traits with dieting and EDs traits and the correlation of the three test scores suggests a connection among these potential conditions.

LEVEL OF EVIDENCE

Level V, descriptive cross-sectional survey.

Selective attentional bias to food-related stimuli in healthy individuals with characteristics towards orthorexia nervosa

PURPOSE

It has been argued that orthorexia nervosa (ON) is a unique type of disordered eating of food considered by the individual to be healthy. Given that in other eating disorder populations attentional preference for food-related cues influences eating behaviours, is it also likely that these biases may be a characteristic of ON tendency.

METHODS

Eighty healthy individuals completed the ORTO-15 questionnaire (ON tendency), a modified Stroop task containing words related to healthy and unhealthy foods and perceived hunger levels pre- and post-testing. The ORTO-15 was used to identify participants within this sample who demonstrated more or less of the characteristics of ON.

RESULTS

Results suggest that the presence of attentional bias to healthy, but not for unhealthy food-related stimuli independently predict increased ON tendency. Increased attentional bias towards healthy food-related stimuli is associated with increased scores on the ORTO-15.

CONCLUSION

Attentional bias, as a deficit in information processing, towards healthy food-related stimuli accounts for variability in ON characteristics.

LEVEL OF EVIDENCE

Level I, experimental study.

"And it snowballed from there": The development of orthorexia nervosa from the perspective of people who self-diagnose

This study aims to include the perspective of those who share content about Orthorexia Nervosa (ON) on Instagram and self-diagnose with ON (SD-ON) to trace their development of ON, gain insights into risk factors, symptoms and recovery, and explore differences with those who do not SD-ON. This research used mixed methods, with a sequential explanatory design. The quantitative component (n = 185) aimed to identify biological, psychological, interpersonal, and contextual factors that play a role in each phase of ON development. The qualitative component (n = 10) aimed to probe how and why individuals who SD-ON feel that certain experiences have shaped their development of ON. Respondents defined ON an obsession with healthy eating and clean or pure foods, with unhealthy effects on physical, mental or social wellbeing. A minority of participants did not view ON as problematic, but as a "salvation" from chronic diseases. Three phases characterizing the development of ON were identified: onset, progression and help seeking. Regarding the onset, two routes were identified, both characterized by a snowball effect of interacting factors. Regarding the progression of ON, several symptoms were identified, with obsession with healthy eating being the most frequent one. The majority of participants were trying to lose weight during ON, but their rationale was health rather than appearance. Regarding the help-seeking phase, reasons for problem realization were identified. ON was not noticed by loved ones until major health problems occurred, this being a barrier for recovery. While most believed that recovery is possible, respondents agreed that ON is a condition that will always linger in the back of the mind. This study contributes to addressing the shortage of qualitative studies investigating ON from insiders' perspective.

Orthorexia Nervosa in China: An Exploration of Phenomenology and Clinical Correlates Among University Students

Orthorexia nervosa, characterized by pathological preoccupation with healthy eating and food purity, is conceptualized as being linked to cultural concepts of health pervasive in contemporary Western societies. However, little is known about the phenomenology and clinical correlates of orthorexia nervosa in non-Western cultures. The current study examined symptoms of orthorexia nervosa, obsessive-compulsive disorder, depression, anxiety, and fear of negative evaluation among 418 Chinese university students. A minority of participants endorsed frequent or impairing orthorexia nervosa symptoms, and females reported slightly higher severity of orthorexia nervosa symptoms than males. Orthorexia nervosa symptom severity was moderately associated with obsessive-compulsive and anxiety symptoms, and weakly associated with depressive symptoms and fear of negative evaluation. Although this study generates initial data about orthorexia nervosa among Chinese students, further research is greatly needed to establish the prevalence and clinical characteristics of orthorexia nervosa in Western and Non-Western cultures.

What are the key features of orthorexia nervosa and influences on its development? A qualitative investigation

Orthorexia nervosa (ON) - a pathological obsession with healthy eating - is an emerging eating disorder. The precise nature of ON and its causes remain unclear, yet few published research studies speak directly to those with ON tendencies or professionals working with them. Our study redresses this gap in the literature by uncovering the defining ON features and the factors influencing its development. The exploratory qualitative research design included semi-structured interviews with those self-identifying as orthorexic or obsessively preoccupied with healthy eating (n = 9), and professionals working with ON and eating disorders - psychologists, dieticians and a family therapist (n = 7). Data were analysed thematically. ON emerged as multifactorial, with a variety of interrelated influences needing to coalesce for 'healthy eating' to become pathological. Key features included rigidity and control (around food choices, routines and preparation) and moral judgements around food, along with a range of negative psychosocial and physical impacts. Influences on the development of ON were organised according to their occurrence at the individual (micro) level, external/relational (meso) level and societal (macro) level. Influences on the individual included health concerns, belief in food as medicine, past trauma, personality (e.g. obsessive, perfectionist), exposure to extreme views and behaviours while growing up and moral concerns. External influences included parents, partners and relational groups (e.g. fitness or clean eating groups). Societal influences included aestheticism, moral citizenship and social media. We conclude that ON is more than an individual pathology, it is symptomatic of our 'orthorexic society': where hyper-reflexivity around food choices, conflicting information regarding the correct diet, preoccupation with appearance, and emphasis on individual (not collective) responsibility for health combine with individual susceptibilities and ecological/moral concerns, to predispose toward pathological 'healthy' eating.

Perspective: Classifying Orthorexia Nervosa as a New Mental Illness-Much Discussion, Little Evidence

Significant prevalence rates of pathological healthful eating and its extreme form, orthorexia nervosa (ON), the pathological obsession with healthy eating, have led to increased efforts to understand this phenomenon's clinical relevance. This narrative review qualitatively summarizes existing evidence on the (psycho-)pathology and consequences of ON and offers an interpretation within the frame of existing theories and models of psychiatric disease. Adding to the controversy in the field of ON, this review offers important critiques and identifies gaps in our current understanding of ON as a (distinct) mental illness.

Eating Disorders in Male Athletes

CONTEXT

Eating disorders (EDs) in male athletes are potentially debilitating disorders with significant medical, psychological, and athletic performance consequences.

EVIDENCE ACQUISITION

Searches were performed across PubMed, EBSCOhost, and PSYCinfo from 1990 to 2019. Keywords searched were eating disorder, male, athlete, anorexia nervosa, bulimia nervosa, muscularity, muscle dysmorphia, and sports. Search results included articles written in the English language and encompassed reviews, empirical studies, and theoretical articles.

STUDY DESIGN

Clinical review.

LEVEL OF EVIDENCE

Level 3.

RESULTS

EDs among male athletes may lead to serious negative outcomes, including increased susceptibility to injury, inconsistent performance, problematic recovery, muscle deficiencies, impairment of optimal athletic functioning, and medical, social, and emotional problems. Male athletes with EDs may be more difficult to identify and diagnose for a variety of reasons related to differential presentation of symptoms, secretiveness or shame around behaviors, and sex-related stigma.

CONCLUSION

Professionals working closely with athletes are uniquely positioned to identify and screen those who may require further evaluation and treatment.

Relationship between Psychosocial Impairment, Food Choice Motives, and Orthorexic Behaviors among Polish Adults

Orthorexic behaviors correlate not only with health motives when choosing food but may also coexist with psychosocial impairment. The aim of this study was to assess the motives of food choice and psychosocial impairment among adults with orthorexic behaviors through the use of ORTO-15 and ORTO-7. The data for the study were collected from a sample of 1007 Polish adults through a cross-sectional quantitative survey conducted in 2019. The respondents were asked to complete the ORTO-15 questionnaire, the Food Choice Questionnaire (FCQ), and the Clinical Impairment Assessment (CIA). Orthorexic behaviors were measured using both the 15-item and the shorter 7-item version of the ORTO questionnaire. To determine the factors coexisting with the orthorexic behaviors, linear regression models were developed. The scores of both ORTO-15 and ORTO-7 correlated positively with the global CIA scores and the scores of personal, cognitive, and social impairments, but compared to the ORTO-7 scores, the ORTO-15 scores showed weaker correlations with the global CIA score and individual CIA scales. Orthorexic behaviors measured with ORTO-15 correlated positively with such food choice motives as health, natural content, and weight control; whereas orthorexic behaviors measured with ORTO-7 showed positive bivariate correlations only with two food choice motives: health and weight control. In regression models, sensory appeal, age, and education lower than secondary were associated inversely with orthorexic behaviors measured by both the ORTO-15 and the ORTO-7. In conclusion, the obtained results confirm that orthorexic behaviors are associated with a higher score regarding health motivation and cause an increase in psychosocial impairment. In addition, orthorexic behaviors are associated with greater importance of body weight control, which confirms the relationship between orthorexic behaviors and other eating disorders (ED), such as anorexia nervosa (AN) and bulimia nervosa (BN). However, similar motives for food choice displayed by the groups with higher scores of the ORTO-15 and the ORTO-7 and strong correlation between results obtained from both tools confirmed the similarity between these two questionnaires, thus revealing the weak psychometric properties also of the shorter seven-item version of the ORTO. Future studies on food motives, psychosocial impairment, and orthorexic behaviors should consider using other tools for measuring orthorexic behaviors.

Male Body Image Portrayals on Instagram

Men are faced with trends that give rise to the desire for a muscular and lean body; this may result in body dissatisfaction. Body dissatisfaction is associated with a plethora of health consequences. Social media has been named as one contributing factor for male body dissatisfaction. Up till now, women have been the focus of body image-related social media studies. Therefore, we conducted a quantitative content analysis of 1,000 relevant Instagram posts that were posted by men (and/or depicted men) to understand how the male body is depicted on Instagram and how user respond to those images. The majority of sampled posts showed high levels of muscularity and leanness. In addition, posts depicting men adhering to this specific body type received significantly more responses (likes and comments). Norms and outcomes related to health (i.e., training to be healthy) were more commonly shown than appearance-related constructs (i.e., training to become attractive), and promotion of physical activity was more common than dietary behavior. However, findings are potential harmful to men's body image, even if one considers that health-related messaging and physical active promotion was prominent. It remains debatable if men need to view very lean and very muscular men to encourage health-related behaviors.