Purpose: Eating disorder (ED) is a common complication with disturbance of eating or eatingrelated behaviors that lead to physical and psychosocial disorders. The purpose of this study was to evaluate the association between eating disorders and daily fast food consumption, family size, weight-caused stress, and sleep quality in teenagers in Zanjan, Iran. Methods: Adolescent girl students aged 12-15 years (n = 370), selected in a cross-sectional study, completed the Eating Attitude Test-26 and Pittsburgh Sleep Quality Index questionnaires. The cluster random sampling method was used. Statistical analysis was performed using R software version 3.6.3. Logistic regression modeling was used for investigating the relationship between factors and odds of EDs. A p value of less than 0.05 was considered significant. Results: A significant relationship was found between family size (OR = 0.77, p = 0.049), fast food-daily consumption (OR = 5.42, p = 0.043), weight-caused stress (OR = 12.47, p < 0.001), and poor sleep quality (OR = 1.70, p = 0.024) and odds of eating disorder among teenage girls. Conclusion: A significant positive association was found between a low number of family members, daily fast food consumption, stress status, poor sleep quality and odds of EDs. However more longitudinal studies are required to confirm the results.

Journal of Human, Environment, and Health PromotionJournal homepage: www.zums.ac.ir/jhehp Background: Eating disorders (EDs) are diseases of mental origin, which are associated with unusual eating behaviors. The structure of eating behaviors may differ depending on body weight and sleep status. The present study aimed to assess the prevalence of disordered eating attitudes and its associations with weight and sleep status in female adolescents in Zanjan, Iran. Methods: This cross-sectional study was conducted on 359 female students selected from the secondary high schools of Zanjan via random cluster sampling. Disordered eating attitudes and recent sleep quality were evaluated using the eating attitude test (EAT-26) and Pittsburgh sleep quality index (PSQI), respectively. In addition, anthropometric measurements were performed using standard protocols. Results: In total, 22.3% of the subjects had disturbed eating attitudes. Moreover, comparison of disordered eating attitude in these subjects with healthy students indicated significant differences in terms of body weight (P <0.05) and body mass index (BMI) (P < 0.05). Conclusion: According to the results, abnormal eating attitude was highly prevalent in the students. Furthermore, the subjects with EDs had higher body weight, BMI, and PSQI scores, as well as shorter duration of sleep, compared to the others. And PSQI score along with shorter sleep duration than others.

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