Orthorexic tendencies moderate the relationship between semi-vegetarianism and depressive symptoms

PURPOSE Vegetarianism and semi-vegetarianism (i.e., overly vegetarian diet with rare consumption of meat) have been repeatedly linked with depression. As the nature of this association is unclear, we explored whether orthorexic (i.e., pathologically healthful eating) tendencies and ecological/ethical motives to follow a vegetarian diet may moderate the relationship between (semi-)vegetarian diets and depressive symptoms. METHODS Five-hundred eleven adults (63.4% females; 71.2% omnivores, 19.2% semi-vegetarians, 9.6% vegetarians) completed the Patient Health Questionnaire (PHQ-9) questionnaire-measuring depressive symptoms-and the Düsseldorf Orthorexia Scale (DOS)-measuring orthorexic tendencies. Based on respective questions, participants were categorized as omnivores, semi-vegetarians, and vegetarians (including vegans) and were asked to indicate whether they chose their diet based on ecological/ethical motives. Moderation analyses were carried out with PROCESS. RESULTS Adjusted for age, sex, and body mass index, there was a statistically significant interaction effect between diet (omnivore vs. semi-vegetarianism vs. vegetarianism) and DOS scores when predicting PHQ depression scores. At low or medium DOS scores, diets did not differ in PHQ depression scores (all > 0.05). At high DOS scores, however, semi-vegetarians had higher PHQ depression scores than both omnivores (p = 0.002) and vegetarians (p < 0.001). The interaction between diet and ecological/ethical eating motives when predicting PHQ depression scores was not statistically significant (p = 0.41). CONCLUSION Semi-vegetarians with strong orthorexic tendencies show more depressive symptoms than omnivores and vegetarians. The complex nature of the relationship between vegetarianism and depression requires further investigation. LEVEL OF EVIDENCE III, case-control analytic studies

Orthorexic tendencies in the general population: association with demographic data, psychiatric symptoms, and utilization of mental health services

PURPOSE Orthorexia nervosa (ON) is characterized by a preoccupation to eat healthily and restrictive eating habits despite negative psychosocial and physical consequences. As a relatively new construct, its prevalence and correlates in the general population and the associated utilization of mental health services are unclear. METHODS Adults from the general population completed the Düsseldorf Orthorexia Scale (DOS), the Patient Health Questionnaire (PHQ), the Short Eating Disorder Examination (SEED). RESULTS Five-hundred eleven (63.4% female) participants with a mean age of 43.39 (SD = 18.06) completed the questionnaires. The prevalence of ON according to the DOS was 2.3%. Considering only effects of at least intermediate size, independent samples t-tests suggested higher DOS scores for persons with bulimia nervosa (p < .001, Cohen's d = 1.14), somatoform syndrome (p = .012, d = .60), and major depressive syndrome (compared p < .001, d = 1.78) according to PHQ as well as those who reported to always experience fear of gaining weight (p < .001, d = 1.78). The DOS score correlated moderately strong and positively with the PHQ depression (r = .37, p < .001) and stress (r = .33, p < .001) scores as well as the SEED bulimia score (r = .32, p < .001). In multivariate logistic regression analyses, only PHQ depression~scores were associated with past psychotherapeutic or psychiatric treatment (OR = 1.20, p = .002) and intake of psychotropic medication in the last year (OR = 1.22, p = .013). CONCLUSIONS The prevalence of ON was low compared to international studies but is in line with other non-representative German studies. Orthorexic tendencies related to general mental distress and eating disorder symptoms but were no independent reason for seeking treatment. LEVEL OF EVIDENCE Level V, cross-sectional descriptive study

Emotion regulation strategies in bulimia nervosa: an experimental investigation of mindfulness, self-compassion, and cognitive restructuring

Background While improving emotion regulation (ER) is a central goal in the therapy of bulimia nervosa (BN), there is no experimental evidence on the efficacy of different ER strategies. (1) We hypothesized that mindfulness as well as self-compassion as contextual strategies and cognitive restructuring as classical cognitive behavioral strategy would outperform waiting in improving emotional and eating disorder related outcomes after an unpleasant mood induction. Further, we explored (2) whether contextual strategies outperformed cognitive restructuring and (3) whether comorbid mental disorders and previous treatment for BN influenced the efficacy of contextual ER strategies compared to cognitive restructuring. Methods Within their first 2 weeks of treatment, inpatients with BN were instructed to utilize mindfulness, self-compassion, and cognitive restructuring or to wait after a pre-induced sadness in a permuted repeated measures design. Patients further rated different emotional and cognitive outcomes on a visual analogue scale at baseline, and before and after each ER strategy. Multiple linear regression analyses were employed to compare (1) the active conditions to waiting, (2) the contextual strategies with cognitive restructuring, and (3) the latter analysis again, but separated according to comorbidity and previous treatment. Results Forty-eight female inpatients with BN (mean age = 26.44 years, SD = 6.64) completed the study. (1) Contextual ER strategies were more efficacious than waiting for eating disorder symptoms. Cognitive restructuring did not differ from waiting for any outcome. (2) Contextual strategies were more efficacious than cognitive restructuring for emotional outcomes. (3) Self-compassion was more efficacious than cognitive restructuring in patients with comorbid mental disorders and previous treatment in increasing control over the present feeling. Conclusions Contextual strategies, especially self-compassion, seem more efficacious than waiting and cognitive restructuring in improving short-term ER in patients with BN in an experimental setting