ARFID Associated with Elevated Risk for ADHD, Autism in Youth: New Study

March 20, 2025

Children and adolescents with avoidant restrictive food intake disorder (ARFID) are more likely to have comorbid neurodevelopmental and psychiatric disorders like autism, ADHD, and anxiety, according to a new study¹ published in The Journal of Child Psychology and Psychiatry.

Among the 30,795 children included in the large-scale study, those with ARFID (n=616) were 14 times more likely to have autism and nine times more likely to have ADHD than were children without ARFID. They also demonstrated an increased risk for OCD, separation anxiety, generalized anxiety disorder (GAD), depression, learning disorders, conduct disorder, and more.

These results stand out amid the relatively scarce research data on ARFID, an eating disorder added to the Diagnostic and Statistical Manual of Mental Health Disorders (DSM-5) in 2013.

“This study is one of the few large-scale epidemiological investigations of ARFID comorbidities in a general population sample,” the researchers wrote. “The findings emphasize the importance of incorporating routine screening for neurodevelopmental disorders, anxiety, and depression into ARFID assessments.”

Individuals with ARFID avoid foods based on sensory characteristics, a lack of interest in eating, and/or fear-related concerns over adverse eating experiences — not due to the body image concerns that compel other eating disorders like anorexia nervosa. ARFID is characterized by a “failure to meet appropriate nutritional and/or energy needs.”

Despite affecting 1-2% of children and adolescents², ARFID is often excluded from eating disorder discourse and clinical examinations. ARFID’s high comorbidity can complicate symptom identification, according to researchers.

“It’s important to really think about those with ADHD being at risk for a variety of eating disorder thoughts and behaviors, not just binge eating,” said Christine Peat, Ph.D., in a 2024 ADDitude webinar, “Eating Disorders Comorbid with ADHD: What You Need to Know About ARFID, Anorexia, and Others.” “In clinical contexts, ARFID and atypical anorexia nervosa may be overlooked, even in very routine eating disorder screenings.”

The study’s results emphasize the importance of identifying ARFID, the diagnosis of which may shed light on comorbidities.

“Early identification of these comorbidities can facilitate timely, targeted interventions and improve treatment outcomes,” the researchers wrote.

One ADDitude reader, Tiffany Bird, suffered decades of poor health before being diagnosed with ARFID in her late 20s. “For the first time, a doctor fully examined me and determined that I’ve been severely malnourished my entire life, no matter what ‘the numbers’ might have said. It made complete sense,” wrote Bird in an ADDitude guest blog post, “I went Over 25 Years Without Consuming a Vegetable.”

ARFID and Neurodevelopment Disorders

The study examined parent reports for 30,795 children born between 1992 and 2008, at 9 or 12 years old (depending on their cohort), from the Child and Adolescent Twin Study in Sweden. The parents rated their child using three measures of neurodevelopmental and psychiatric disorders: the A-TAC inventory, the Screen for Child Anxiety Related Emotional Disorders (SCARED), and the Short Mood and Feelings Questionnaire (SMFQ). The researchers examined the relationship between having ARFID and showing symptoms of other disorders using linear and logistic regressions.

The link between ADHD and ARFID found in the study reflects preliminary research in this area. According to Peat, one study found that 25% of adults with ARFID also had ADHD, and another reported that 10% of children and adolescents with ARFID had been diagnosed with ADHD at some point in their lives.

“We are so far from having causal explanations for this overlap,” Peat said. “But maybe kids and adults with ADHD are just sort of more biologically predisposed to have difficulty with sensory characteristics with food, so maybe that makes them more vulnerable to going on to develop something like ARFID.”

The study’s results regarding autism and ARFID also mirror prior research. One meta-analysis reported that autism was present in 16% of individuals with ARFID³.

People with ARFID are more likely to have autism than those without, and vice versa, possibly due to heightened sensory issues and inflexibility due to anxiety around change, both symptoms of autism, according to an article in ARFID Awareness UK.

ARFID and Psychiatric Disorders

According to the study, children with ARFID were four to six times more likely to have a psychiatric disorder, with OCD and anxiety presenting the greatest risks.

The most common type of anxiety found in the study was separation anxiety, which contrasts previous research that found GAD to be more common. This could be because of the younger age of onset characteristic of separation anxiety or younger age of the sample, the researchers wrote. However, they also hypothesize another reason their results differed.

“One hypothesis worth exploring is that separation anxiety is increased in ARFID because children fear separation from caregivers due to the potential for unanticipated exposure to feared foods or feeding-related situations,” the researchers wrote.

The study also found a higher rate of oppositional defiant disorder (ODD) (19.4%) than reported in previous studies, suggesting a possible overlap of symptoms between the two disorders.

“Our findings suggest that food-related conflicts may underlie the observed risk of ODD in ARFID, but further research is needed to confirm this association,” the researchers wrote.

Children with ARFID were found to face a higher risk for anxiety than depression. Depression is common among children with other eating disorders, according to the researchers. This discrepancy in comorbidities highlights the differences between ARFID and other eating disorders.

“The defining feature [of ARFID] is a persistent and pervasive eating or feeding disturbance in which someone is simply not meeting all of their nutritional needs,” Peat said. “In ARFID, these people don’t necessarily have that fear of fat or fear of weight gain.”

Gender and ARFID

Prior research may suggest that ARFID is more common in young males. However, this study found no gender-based differences in comorbidity rates associated with ARFID, meaning that the likelihood of having symptoms of another disorder in conjunction with ARFID did not significantly differ based on sex.

The results did indicate that, overall, boys had higher odds of developing a neurodevelopmental disorder, depression, and sleep problems; girls had higher rates of anxiety disorders (except for panic disorder).

“Unlike other eating disorders, the distribution of males and females with ARFID has been reported to be approximately equal,” the researchers wrote. “Given the sex differences observed in the prevalence of (neurodevelopmental disorders) and psychiatric conditions, it is important to investigate whether these sex differences are also present in individuals with ARFID.”

The study’s sample did not include transgender and nonbinary youth, a major limitation considering that transgender, nonbinary, and gender-expansive kids are at higher risk for eating disorders compared with their cisgender peers.

“There remains an urgent need to develop integrated treatment approaches that address both ARFID and its co-occurring conditions,” the researchers wrote.

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