Myths vs facts: IgE Allergietest and gut health

Myths vs facts: IgE allergy tests and gut health. A common myth is that an IgE food allergy test can assess gut health. In reality, IgE measures antibodies for immediate allergic reactions, not food intolerances or microbiome status. Many companies market IgE tests as a 'gut health check' without evidence. Gut health is better evaluated through stool tests (microbiome, calprotectin, digestive enzymes). A positive IgE result does not imply gut barrier damage or intestinal inflammation. Conversely, gut issues like IBS or leaky gut can exist without elevated IgE. The evidence linking IgE to gut health is weak, mostly mechanistic or marketing-driven. Mainstream medicine recommends IgE tests only when a type I allergy is suspected, not for general gut complaints. Conclusion: IgE tests are for allergies, not gut health. For gut-related symptoms, specific stool tests and medical consultation are appropriate.