ARFID does not exist in isolation. For a significant proportion of people with ARFID, the eating difficulties are one expression of a broader neurodevelopmental profile that may include autism spectrum disorder (ASD), attention-deficit/hyperactivity disorder (ADHD), sensory processing differences, or anxiety disorders. Understanding the relationship between ARFID and neurodivergence is important for accurate diagnosis, effective treatment planning, and — perhaps most importantly — for the self-understanding of the many neurodivergent people who have spent years wondering why food is so hard.
Research consistently shows that ARFID co-occurs with ASD and ADHD at rates significantly higher than in the general population. Studies report that between 17% and 33% of individuals with ARFID also meet criteria for ASD, and that ARFID is present in approximately 70% of autistic children referred for feeding difficulties.12 ADHD co-occurrence is also well-documented, though less extensively studied.
This overlap is not coincidental. The neurobiological mechanisms underlying sensory processing differences in autism and ADHD appear to share pathways with the sensory-based presentation of ARFID. The heightened sensory sensitivity that characterises many autistic individuals — to sound, light, touch, and other stimuli — extends to food, where texture, smell, taste, and appearance can all be sources of genuine sensory overwhelm.3
This does not mean that all people with ARFID are autistic, or that all autistic people have ARFID. It means that the two conditions share neurobiological ground, and that understanding one can illuminate the other.
For autistic individuals, food difficulties are often multidimensional. Sensory sensitivity is the most commonly cited factor — the texture of a food, the smell of something cooking nearby, or the visual appearance of a mixed dish can all trigger genuine aversive responses. But there are additional factors that are specific to autism:
Rigidity and sameness. Many autistic individuals have a strong preference for sameness and predictability. Food that looks, smells, or tastes different from what is expected — even a slight variation in preparation — can be deeply distressing. This is not inflexibility as a character trait; it is a neurological feature of autism that affects many domains, including food.
Interoceptive differences. Interoception — the ability to perceive internal bodily signals — is frequently atypical in autism. This can affect hunger and fullness cues, making it difficult to know when to eat, when to stop, or to connect physical discomfort with its cause. Some autistic individuals with ARFID describe not feeling hungry until they are already significantly under-fuelled.
Demand avoidance. For autistic individuals with a Pathological Demand Avoidance (PDA) profile, the demand to eat — even a self-imposed demand — can trigger avoidance. This adds a layer of complexity to treatment approaches that rely on structured eating schedules or graduated exposure.
Sensory environment. For autistic individuals, the sensory environment of eating — the noise of a cafeteria, the smell of other people's food, the social demands of a shared meal — can be as challenging as the food itself. Addressing the eating environment is often as important as addressing the food.
Standard ARFID treatments can be effective for autistic individuals, but adaptations are often necessary:4
The relationship between ARFID and ADHD is less studied than the autism overlap, but clinically significant. Several mechanisms link the two conditions:
Appetite suppression from stimulant medication. Many children and adults with ADHD take stimulant medications (methylphenidate, amphetamine-based medications) that suppress appetite. This can reduce the already-limited food intake of someone with ARFID, and can make the low-appetite presentation of ARFID more severe. Timing medication to allow for appetite at mealtimes, and working with a prescribing clinician to optimise dosing, can help.
Hyperfocus and forgetting to eat. ADHD is characterised by difficulty regulating attention, which can manifest as hyperfocus on activities of interest and complete inattention to bodily needs. Many adults with ADHD describe forgetting to eat for hours, not because they are not hungry, but because they are so absorbed in something else that hunger cues do not break through. This pattern is closely related to the low-appetite presentation of ARFID.
Impulsivity and food. Some individuals with ADHD have a complex relationship with food that involves both restriction (forgetting to eat, appetite suppression) and impulsivity (eating quickly, not noticing fullness). This complexity can make nutritional management more challenging.
Sensory sensitivity. Sensory processing differences are common in ADHD as well as autism, and can contribute to sensory-based food avoidance in ADHD-ARFID presentations.
Anxiety disorders are among the most common comorbidities in ARFID, regardless of whether ASD or ADHD is also present. The relationship between ARFID and anxiety is bidirectional and self-reinforcing: anxiety about eating consequences maintains ARFID, and the social and functional consequences of ARFID generate further anxiety.
For neurodivergent individuals, this anxiety is often compounded by the broader experience of navigating a world that is not designed for their neurotype. The social demands of eating — the expectation of sharing meals, trying new foods, eating in unfamiliar environments — are demands that many neurodivergent people find genuinely difficult for reasons that extend beyond ARFID itself.
Treatment that addresses anxiety as a central component — whether through CBT-AR, ERP, or other evidence-based anxiety interventions — is important for neurodivergent individuals with ARFID. It is also important that treatment providers understand that some anxiety in neurodivergent individuals reflects genuine environmental mismatch, not cognitive distortion, and that accommodation is sometimes the appropriate response rather than exposure.
For neurodivergent individuals, the diagnostic picture can be complex. ARFID may be diagnosed before ASD or ADHD is identified, or vice versa. Some clinicians may attribute eating difficulties entirely to autism without assessing for ARFID as a distinct condition. Others may miss the autism or ADHD because the ARFID presentation is the most visible concern.
A thorough assessment that considers the full neurodevelopmental picture — including ARFID, ASD, ADHD, anxiety, and sensory processing — is the most effective foundation for treatment planning. If you are a neurodivergent adult who suspects ARFID, or a parent of a neurodivergent child with significant food difficulties, requesting a comprehensive assessment from a clinician experienced in both eating disorders and neurodevelopmental conditions is the most important first step.
Kozak A, et al. (2023). Avoidant/Restrictive Food Disorder (ARFID), Food Neophobia, and ASD. PMC. https://pmc.ncbi.nlm.nih.gov/articles/PMC10218647/ ↩
Ramirez Z, Gunturu S. (2024). Avoidant Restrictive Food Intake Disorder. StatPearls. https://www.ncbi.nlm.nih.gov/books/NBK603710/ ↩
Kopańska M, et al. (2025). From ARFID to Binge Eating: A Review of the Sensory, Behavioral, and Gut–Brain Axis Mechanisms. Nutrients. https://pmc.ncbi.nlm.nih.gov/articles/PMC12693767/ ↩
Dumont E, et al. (2019). A new cognitive behavior therapy for adolescents with ARFID. International Journal of Eating Disorders. https://pmc.ncbi.nlm.nih.gov/articles/PMC6593777/ ↩