Nutrition (Burbank, Los Angeles County, Calif.) · 2026
Orthorexia nervosa prevalence and associated factors in individuals attending a diet outpatient clinic: A cross-sectional study.
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Atabay Fatma Ebru, Altin Duygu
Аннотация
BACKGROUND: Orthorexia nervosa (ON) is characterized by an excessive preoccupation with consuming healthy foods, which may lead to dietary restrictions, psychological distress, and social isolation. Despite its increasing recognition, ON is not yet formally classified in the diagnostic and statistical manual of mental disorders (DSM), and its prevalence among individuals seeking dietary guidance remains underexplored. This study aims to evaluate the prevalence of orthorexic tendencies and their associated factors among individuals attending a diet outpatient clinic.
METHODS: A cross-sectional study was conducted at the Yalova Governmental Hospital Outpatient Diet Polyclinic. A total of 265 participants were recruited using a convenience sampling method. Data were collected through a socio-demographic questionnaire and the ORTO-15 Scale, a widely used tool for assessing ON tendencies. Statistical analyses were performed using SPSS 22.0, with chi-square tests and ANOVA applied to examine relationships between ON and body mass index (BMI). A p-value <.05 was considered statistically significant. In addition, a multivariable logistic regression analysis was conducted to identify factors associated with orthorexic tendencies.
RESULTS: The prevalence of orthorexic tendencies among participants was 17%, exceeding the rates reported in the general population. No significant relationship was found between BMI and ON tendencies (p = .27), supporting previous research suggesting that ON is more concerned with food quality than body image. In the multivariable logistic regression analysis, none of the examined variables were significantly associated with orthorexic tendencies. Participants relied primarily on mass media and dietitians for nutritional information, indicating potential influences on dietary behaviors.
CONCLUSIONS: This study identified orthorexic tendencies in 17% of individuals attending a diet outpatient clinic, exceeding general population estimates. However, given the psychometric limitations of the ORTO-15, this figure should be interpreted cautiously. No significant sociodemographic or clinical predictors were identified. These findings suggest that orthorexic tendencies may be clinically relevant in dietary settings and highlight the need for validated assessment tools and further research.
METHODS: A cross-sectional study was conducted at the Yalova Governmental Hospital Outpatient Diet Polyclinic. A total of 265 participants were recruited using a convenience sampling method. Data were collected through a socio-demographic questionnaire and the ORTO-15 Scale, a widely used tool for assessing ON tendencies. Statistical analyses were performed using SPSS 22.0, with chi-square tests and ANOVA applied to examine relationships between ON and body mass index (BMI). A p-value <.05 was considered statistically significant. In addition, a multivariable logistic regression analysis was conducted to identify factors associated with orthorexic tendencies.
RESULTS: The prevalence of orthorexic tendencies among participants was 17%, exceeding the rates reported in the general population. No significant relationship was found between BMI and ON tendencies (p = .27), supporting previous research suggesting that ON is more concerned with food quality than body image. In the multivariable logistic regression analysis, none of the examined variables were significantly associated with orthorexic tendencies. Participants relied primarily on mass media and dietitians for nutritional information, indicating potential influences on dietary behaviors.
CONCLUSIONS: This study identified orthorexic tendencies in 17% of individuals attending a diet outpatient clinic, exceeding general population estimates. However, given the psychometric limitations of the ORTO-15, this figure should be interpreted cautiously. No significant sociodemographic or clinical predictors were identified. These findings suggest that orthorexic tendencies may be clinically relevant in dietary settings and highlight the need for validated assessment tools and further research.