Orthorexia Nervosa and Psychosocial Impairment from a Multidimensional Perspective: a Structural Equation Modelling Approach

Orthorexia Nervosa (ON) is a proposed clinical condition characterised by an excessive fixation on consuming healthy and pure foods, leading to strict dietary restrictions and potentially negative consequences for both mental and physical health. Despite its increasing prevalence, ON has yet to be classified as a distinct disorder within diagnostic classification systems. To promote its recognition as a formal disorder, it is pivotal to establish a significant association between ON symptoms and psychosocial impairment. To this end, we adopted a multidimensional perspective and explored a broad range of psychosocial domains to address this knowledge gap. A total of 261 participants aged 18–73 years (Mage = 30.03 years, 85