Avoidant/Restrictive Food Intake Disorder in Celiac Disease

Celiac disease (CeD) is an autoimmune disorder where adherence to a lifelong gluten-free diet (GFD) is the only available treatment. While this approach is rather effective, some patients experience ongoing symptoms, and this factor, along with the rigidity of the GFD, may predispose some to disordered eating behaviors, including Avoidant/Restrictive Food Intake Disorder (ARFID). ARFID is characterized by persistent food avoidance that is not driven by body image concerns, resulting in nutritional, psychological, and social impairment. This scoping literature review explores the emerging intersection between ARFID and CeD, examining prevalence, pathophysiology, clinical features, complications, and management strategies. Recent studies report that 14-57% of individuals with CeD may meet the criteria for ARFID, depending on the population and screening tools used. Factors contributing to ARFID in CeD may include ongoing gastrointestinal symptoms, anxiety over gluten exposure, negative conditioned responses to food, social challenges related to GFD adherence, and psychiatric co-morbidities. ARFID in CeD is associated with worsened nutritional deficiencies, anxiety, depression, and impaired social functioning, making the diagnosis of ARFID challenging due to symptom overlap with CeD and other psychiatric conditions. Management requires a multidisciplinary approach, including medical, nutritional, and psychological interventions. Routine screening, early intervention, and integrated care models may improve outcomes and quality of life.