Factors Affecting Eating Motivation Play a Role in Orthorexia Nervosa in University Students: A Cross-Sectional Study

Orthorexia nervosa (ON), an eating disorder marked by an obsession with healthy eating, is influenced by social and psychological factors, particularly among university students during a formative period. This study investigated the effects of eating motivations, defined by factors such as health, pleasure, social influences, and environmental concerns, on orthorexic tendencies. Using the Turkish-validated versions of ORTO-11 and The Eating Motivation Survey (TEMS-Brief version), data were collected from 416 students who meet the study participation criteria (mean age: 22.3 ± 4.41 years, 84.4% female, and mean BMI: 22.74 ± 4.54 kg/m²). The results showed that ORTO-11 scores increased significantly with BMI, indicating lower orthorexic tendencies. TEMS sub-dimensions revealed that the health sub-dimension decreased orthorexic tendencies (<i>p</i> = 0.044), whereas the traditional eating sub-dimension significantly increased them (<i>p</i> = 0.000). These findings suggest a complex interaction where prioritizing health may conflict with cultural eating norms. Interventions should address this balance by promoting a holistic approach to nutrition, integrating stress management techniques, and raising awareness of ON through targeted workshops and educational programs for students and health professionals. A long-term evaluation of these programs is essential to ensure their effectiveness in fostering healthier relationships with food and mitigating ON risk among young adults.