ARFID in adolescence

ARFID typically presents in one of three ways, though overlap between them is common. Sensory sensitivity: the teen avoids foods based on texture, taste, smell, or appearance. These are often the teens who eat a narrow range of 'safe' foods, usually bland, beige, and predictable. Fear-based avoidance: the teen avoids eating because of a traumatic experience or fear of one, such as choking, vomiting, or an allergic reaction. Low appetite: the teen simply isn't interested in food, forgets to eat, or feels full quickly.

Understanding which presentation is dominant shapes the treatment. Sensory-based ARFID benefits from gradual sensory-informed food exposure. Fear-based ARFID often needs anxiety management alongside nutrition work. Low-appetite ARFID may need structured eating schedules and calorie-dense strategies. In reality, many teens have elements of more than one, which is why individual assessment matters so much.

The clinical threshold for ARFID is restriction that significantly affects one or more of: weight (loss or failure to gain expected weight), nutritional adequacy (deficiencies), social functioning (withdrawal from social eating, avoiding situations where food is involved), or psychosocial functioning more broadly (distress, impact on daily life).

Evidence suggests that earlier intervention may produce better outcomes. As ARFID Awareness UK emphasises, evidence suggests ARFID in teens may respond better to earlier intervention. Earlier intervention is generally associated with better outcomes compared with later presentation. If you're noticing a narrowing diet, increasing distress around food, social withdrawal related to eating, or nutritional concerns, that's the time to seek assessment.

ARFID treatment is multidisciplinary. Dietetics for nutritional adequacy, structured eating plans, and guided food exposure. Psychology for the anxiety and avoidance components, often using CBT-AR, a specific cognitive-behavioural protocol designed for ARFID. Sometimes occupational therapy for sensory work. Sometimes family-based therapy, particularly for younger teens where family involvement is critical.

Treatment takes time. This isn't a condition that resolves in a few sessions. Realistic expectations are important: progress is usually measured in months, and the goal is sustainable expansion of the diet and improved nutritional status, not a complete transformation in eating. Families who understand the pace tend to do better because they're less likely to push too fast and trigger setbacks.

I work as part of a multidisciplinary team where possible, coordinating with psychologists and other professionals. Where a full team isn't available, I provide the dietetic piece and can recommend appropriate psychological support alongside it. The nutrition work alone can make a meaningful difference, but combined input tends to produce stronger outcomes.

The overlap between ARFID and autism is significant, something both Beat and the National Autistic Society highlight. Many autistic teens meet criteria for ARFID, typically through the sensory sensitivity pathway. The sensory differences that characterise autism often extend to food, making certain textures, tastes, and smells genuinely intolerable rather than merely unpreferred.

When ARFID and autism co-occur, the approach needs to account for both. Standard ARFID treatment may need adapting: slower pace, more concrete and predictable structure, sensory-informed food exposure rather than anxiety-focused approaches, and respect for the fact that some degree of sensory-driven food preference is a permanent part of the autistic experience rather than a disorder to be eliminated. The goal is adequacy and expansion where possible, not 'normal' eating.