Prevalence and Characterization of Avoidant Restrictive Food Intake Disorder in a Pediatric Population.

OBJECTIVE

Avoidant/restrictive food intake disorder (ARFID) is a relatively new feeding and eating disorder category in characterized by extreme food avoidance/restriction. Much is unknown about ARFID, with limited understanding of its prevalence and comorbidities in general pediatric populations. This study aimed to classify ARFID prevalence and characteristics in children within the Generation R Study, a population-based Dutch cohort (N = 2,862).

METHOD

ARFID was assessed via an Index that comprised parent-reported questionnaires and researcher-assessed measures of picky eating, energy intake, diet quality, growth, and psychosocial impact, all in the absence of body/weight dissatisfaction to align with criteria. Parents also reported on child appetitive traits and emotional/behavioral problems (eg, anxiety, depression, attention problems).

RESULTS

Using -based categorization, 183 (6.4%) of 2,862 children were classified as presenting with ARFID symptoms. Compared with children not exhibiting symptoms, children classified with ARFID symptomatology expressed other avoidant eating behavior, including decreased enjoyment of food ( = -1.06, false discovery rate-corrected [ ] < .001), increased satiety responsiveness ( = 1.06,  < .001), and emotional undereating ( = 0.21,  < .01), as well as more emotional problems, including withdrawn/depressed ( = 0.38,  < .001), social problems ( = 0.34,  < 0.001), attention problems ( = 0.38,  < .001), anxiety ( = 0.30,  < .001), obsessive/compulsive problems ( = 0.15,  < .05), and autistic traits ( = 0.22;  < .05). Associations did not differ by sex.

CONCLUSION

This is the first large-scale community-based study to characterize ARFID and to demonstrate that ARFID symptom classification is common in children aged ≤10 years. Findings suggest that appetitive, emotional, and behavioral comorbidities may underlie or reinforce the presentation of ARFID.

DIVERSITY & INCLUSION STATEMENT: We worked to ensure sex and gender balance in the recruitment of human participants. We worked to ensure race, ethnic, and/or other types of diversity in the recruitment of human participants. Diverse cell lines and/or genomic datasets were not available. While citing references scientifically relevant for this work, we also actively worked to promote inclusion of historically underrepresented racial and/or ethnic groups in science in our reference list. The author list of this paper includes contributors from the location and/or community where the research was conducted who participated in the data collection, design, analysis, and/or interpretation of the work. We actively worked to promote sex and gender balance in our author group. One or more of the authors of this paper self-identifies as a member of one or more historically underrepresented sexual and/or gender groups in science.