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Study decoded · nutrition · Emerging
Food Avoidance Disorder Far More Common In Gut Pain Conditions, Study Finds
559 adults studied24% vs 11% ARFID rateIBS: 15x higher oddsFear linked to avoidance
A study published October 9, 2026 in Clinical Gastroenterology and Hepatology found that people with irritable bowel syndrome, functional dyspepsia or constipation were up to 18.2 times more likely to screen positive for avoidant/restrictive food intake disorder (ARFID) than healthy volunteers.
Researchers screened 467 patients from seven tertiary care cohorts, irritable bowel syndrome (88 people), functional dyspepsia (83), constipation (59), reflux (107), globus or a lump-in-throat sensation (45), dysphagia or difficulty swallowing (37), and achalasia (48), along with 92 healthy volunteers. They used a screening tool called NIAS that flags avoidant/restrictive food intake disorder (ARFID), a condition where people eat too little or too narrow a range of foods and develop medical or social problems as a result, separate from body image or weight concerns. Patients needed to screen positive on at least one of three subscales, picky eating, low appetite or fear-based avoidance, plus meet a formal impairment standard.
Compared to healthy volunteers, the odds of screening positive for ARFID were 15.0 times higher with IBS, 10.6 times higher with functional dyspepsia, 18.2 times higher with constipation, 7.0 times higher with dysphagia and 5.2 times higher with reflux. Globus and achalasia showed no meaningful link. Grouping disorders by whether they affect the esophagus or not, 24% of people with non-esophageal conditions screened positive for ARFID versus 11% with esophageal conditions, a difference that held up after adjusting for symptom severity, extraintestinal symptoms and depression scores.
Within the non-esophageal group, each one-point increase in depression score was linked to 1.1 times higher odds of screening positive for ARFID, and each one-point increase in food-related abdominal pain was linked to 1.2 times higher odds. The study found fear-based food avoidance was the primary contributor to pain-related restrictive eating. In plain terms, that means eating less because you expect pain or discomfort afterward. When eating reliably triggers cramping, bloating or urgent bathroom trips, the nervous system can learn to associate food with threat, and avoidance can become a protective reflex rather than a conscious diet choice.
Odds of screening positive for ARFID by GI disorder vs healthy volunteers
Data Panel
- Who
- 467 patients across seven gastrointestinal disorder cohorts (IBS 88, functional dyspepsia 83, constipation 59, reflux 107, globus 45, dysphagia 37, achalasia 48) plus 92 healthy volunteers
- Design
- Cross-sectional, multi-cohort comparison using ARFID screening questionnaire (NIAS) plus DSM-5 impairment criteria, with multiple logistic regression adjusted for symptom severity, extraintestinal symptoms and depression
- Dose
- Not applicable (screening and questionnaire study, no intervention)
- Primary result
- ARFID screened positive in 24% of non-esophageal disorder patients versus 11% of esophageal disorder patients; odds of ARFID were 15.0x higher with IBS, 10.6x with dyspepsia, 18.2x with constipation, 7.0x with dysphagia and 5.2x with reflux versus healthy volunteers
- Secondary
- Within non-esophageal disorders, each one-point rise in depression score was linked to 1.1x higher ARFID odds and each one-point rise in food-related abdominal pain was linked to 1.2x higher odds; fear of aversive consequences was identified as the primary factor in pain-related food restriction (size not reported)
- Funding / conflicts
- Funding and conflicts not reported in the abstract.
This is a cross-sectional comparison of patients already seen at specialty digestive clinics, screened with a questionnaire rather than diagnosed through clinical interview, so the numbers describe a link between gut symptoms and disordered eating patterns, not proof that one causes the other. Funding and conflicts not reported in the abstract.
Dr. Axe's Take
This points to an underappreciated piece of chronic gut problems: when eating hurts, people stop eating normally, and that restriction then makes digestion worse. It is a loop, not a character flaw. If food triggers pain or urgency for you, I would identify specific trigger foods through an elimination approach rather than cutting out broad categories out of fear, and calm the gut-brain connection with deep breathing before meals, peppermint oil for cramping, and easily digested proteins like bone broth. If restriction has become severe or you are losing weight you cannot afford to lose, get evaluated by a doctor who understands both the digestive and psychological sides of this.
— Dr. Axe