Which are the causes of Avoidant / Restrictive Food Intake Disorder (ARFID)?

Avoidant / Restrictive Food Intake Disorder (ARFID) does not have a single, definitive cause; rather, it is a complex condition resulting from an interplay of sensory sensitivities, past negative experiences, and psychological predispositions. Current research suggests that Avoidant / Restrictive Food Intake Disorder (ARFID) is multifactorial, involving a combination of biological vulnerabilities, environmental triggers, and individual neurodevelopmental traits.

What causes Avoidant / Restrictive Food Intake Disorder (ARFID)?

The etiology of Avoidant / Restrictive Food Intake Disorder (ARFID) is not fully understood, but experts categorize contributing factors into three primary domains: sensory responsiveness, fear of aversive consequences, and lack of interest in eating. Unlike other eating disorders, Avoidant / Restrictive Food Intake Disorder (ARFID) is typically not driven by body image concerns. Instead, it is often linked to heightened sensitivity to the texture, smell, or taste of food, or a traumatic past experience like choking or vomiting.

Is Avoidant / Restrictive Food Intake Disorder (ARFID) hereditary?

While no single "ARFID gene" has been identified, research indicates a significant heritable component. Studies suggest that individuals with Avoidant / Restrictive Food Intake Disorder (ARFID) often have a family history of anxiety disorders, autism spectrum disorder, or obsessive-compulsive tendencies. Genetic research is ongoing, focusing on how sensory processing genes and anxiety-related neural pathways contribute to the development of the condition.

What are the primary risk factors?

Differentiating between causes—which directly trigger the disorder—and risk factors—which increase vulnerability—is essential. Common risk factors include:

• Neurodivergence: A significantly higher prevalence of autism spectrum disorder (ASD) and ADHD among those with Avoidant / Restrictive Food Intake Disorder (ARFID).


• Sensory Processing Issues: Hypersensitivity to sensory input that makes specific food textures or odors physically distressing.


• Anxiety and GI Issues: Pre-existing anxiety disorders or chronic gastrointestinal conditions that create a negative association with mealtime.

Next steps

• Consult a multidisciplinary team, including a registered dietitian, a pediatrician, and a psychologist specializing in feeding disorders.


• Join the 25 members of the DiseaseMaps community who are navigating Avoidant / Restrictive Food Intake Disorder (ARFID) to share experiences and coping strategies.


• Track sensory triggers in a food journal to help clinicians identify specific patterns of avoidance.

Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment.

References

• NIH Genetic and Rare Diseases Information Center (GARD)


• National Eating Disorders Association (NEDA): ARFID Fact Sheet


• Journal of the American Academy of Child & Adolescent Psychiatry (JAACAP)


• American Psychiatric Association: DSM-5-TR Criteria