Food Science and Technology Department


Department of Food Science and Technology: Faculty Publications

Document Type


Date of this Version



BMJ Open Gastroenterology (2022) 9: e000906

doi: 10.1136/ bmjgast-2022-000906


License: CC BY-NC 4.0


Objective The effects of food sensitivity can easily be masked by other digestive symptoms in ostomates and are unknown. We investigated food-specific-IgG presence in ostomates relative to participants affected by other digestive diseases.

Design Food-specific-IgG was evaluated for 198 participants with a panel of 109 foods. Immunocompetency status was also tested. Jejunostomates, ileostomates, and colostomates were compared with individuals with digestive tract diseases with inflammatory components (periodontitis, eosinophilic esophagitis, duodenitis, ulcerative colitis, Crohn’s disease, and appendicitis), as well as food malabsorption due to intolerance. A logistic regression model with covariates was used to estimate the effect of the experimental data and demographic characteristics on the likelihood of the immune response.

Results Jejunostomates and ileostomates had a significant risk of presenting circulating food-specific-IgG in contrast to colostomates (OR 12.70 (p = 0.002)), 6.19 (p = 0.011) and 2.69 (p = 0.22), respectively). Crohn’s disease, eosinophilic esophagitis and food malabsorption groups also showed significantly elevated risks (OR 4.67 (p = 0.048)), 8.16 (p = 0.016) and 18.00 (p = 0.003), respectively), but not the ulcerative colitis group (OR 2.05 (p = 0.36)). Individuals with profoundly or significantly reduced, and mild to moderately reduced, levels of total IgG were protected from the formation of food-specific IgG (OR 0.09 (p = < 0.001)) and 0.33 (p = 0.005), respectively. Males were at higher risk than females.

Conclusion The strength of a subject’s immunocompetence plays a role in the intensity to which the humoral system responds via food-specific-IgG. An element of biogeography emerges in which the maintenance of a colonic space might influence the risk of having circulating food-specific-IgG in ostomates.

Includes supplementary materials.