Beyond generalized anxiety: the association of anxiety sensitivity with disordered eating

BackgroundAnxiety and eating disorders (EDs) are rising at alarming rates. These mental health disorders are often comorbid, yet the factors associated with their comorbidity are not well understood. The present study examined a theoretical model of the pathways and relative associations of anxiety sensitivity (AS) with different dimensions of ED risk, controlling for generalized anxiety.MethodsParticipants (N = 795) were undergraduate students with an average age of 21 (SD = 4.02), predominantly female (71%), and Hispanic (71.8%). Participants completed an online survey with established measures of AS (i.e., Anxiety Sensitivity Index-3; ASI-3), general anxiety (i.e., Beck Anxiety Inventory; BAI), and eating behaviors (i.e., Eating Attitudes Test-26; EAT-26).ResultsThe results of our structural equation models indicated that AS subscales were significantly associated with dimensions of the EAT-26, even when controlling for generalized anxiety. Specifically, the ASI-3 factors reflecting cognitive and social concerns provided the most consistent significant associations with EDs. Whereas reporting higher cognitive concerns was associated with higher ED symptoms (e.g., reporting the urge to vomit after a meal), reporting higher social concerns was associated with fewer ED symptoms. These differential results may suggest risk and resilience pathways and potential protective or buffering effects of social concerns on ED risk.DiscussionFindings advance understanding of the role of AS in the comorbidity of anxiety and EDs, demonstrating the strong association of AS with ED pathology. These findings provide cognitive indicators for transdiagnostic therapeutic intervention in order to reduce the risk of EDs. Many people with anxiety disorders also have high rates of eating pathology, and vice versa. Teasing apart the factors that may contribute to this co-morbidity can provide important information for psychotherapeutic prevention and intervention. In this study we examine the contributions of anxiety sensitivity, also known as the 'fear of fear,' beyond that of generalized anxiety in its associations with eating disorder outcomes. Our findings show that the cognitive concerns of anxiety (i.e., thinking about being anxious) are associated with higher urges to purge after eating. Higher social concerns with anxiety (i.e., concerns that others will know one is anxious) related to fewer symptoms of eating disorders. Taken together our findings illuminate that considering anxiety sensitivity may be helpful for the diagnosis and treatment of eating disorders.