Orthorexia Nervosa in Turkish dietitians and dietetic students

Orthorexia Nervosa (ON) is characterized by a pathological obsession with healthy eating, and dietetic majors may have a potential risk of developing ON due to their occupation that necessitates consideration of optimal food choices. This study aimed to determine the prevalence of ON among a large sample of dietitians and dietetic students in Turkey and to investigate the association of ON with socio-demographic features and eating attitudes within the whole sample.

Participants (n=1429) completed a self-administered online survey that featured socio-demographic characteristics, the Orthorexia Nervosa Questionnaire (ORTO-11), and the Eating Attitudes Test-26 (EAT-26). Scores on the ORTO-11 and EAT-26 determined the prevalence of ON and disordered eating behaviors, respectively.

The prevalence of ON among Turkish dietetic majors was 59.8% with a higher ratio in dietetic students (63.8%) than dietitians (52.9%) (P<0.001). While graduation was associated with 33.1% lower odds of ON (P=0.006), eating disorders could increase the ON risk approximately five times (P<0.001). Furthermore, the greater total and subscale (dieting, bulimia, and oral control) scores of EAT-26 were associated with higher ON tendency (P<0.001), even after adjustment for potential confounders.

Our findings may shed light on the relevance of developing strategies to reduce the prevalence of ON in the dietetic population but need to be supported by further longitudinal and prospective studies.