Characterising the clinical heterogeneity and aetiology of Avoidant Restrictive Food Intake Disorder

Avoidant Restrictive Food Intake Disorder (ARFID) is a serious eating disorder that involves avoiding certain foods or eating very little, leading to problems like poor nutrition, distress, and sometimes the need for hospital treatment. Although ARFID affects around 1–6% of people, it is still poorly understood, and many individuals struggle to get the right support. ARFID can look very different from person to person, some may have little interest in food, others may be sensitive to textures or tastes, and some may fear negative consequences from eating. This variation makes it hard to diagnose and treat effectively.
This research project aims to better understand ARFID by studying young people in the Born in Bradford (BiB) cohort. The study will explore how common ARFID is in this population, what other health or mental health conditions often occur alongside it, and whether there are different types (or “subtypes”) of ARFID that need different kinds of support. It will also look at what causes ARFID, including genetics, the environment, and early life experiences.
Importantly, the project will involve people with lived experience of ARFID, families, clinicians, and the eating disorder charity Beat to ensure the research is relevant and useful.
The findings will help improve understanding of ARFID and support the development of better services and treatments. By identifying risk factors and subtypes, the research could lead to more personalised care. Researching ARFID in the BiB cohort will also help address a current gap in the eating disorder research field, which has been the lack of inclusion of those from ethnic minority and lower-income backgrounds. Ultimately, this work aims to break the cycle of limited research and poor service provision, creating lasting resources and knowledge to benefit individuals, families, clinicians, and policymakers.