What role does IgE Allergietest play in Darmgesundheit?

The IgE allergy test measures specific IgE antibodies to allergens and is primarily used to diagnose type I allergies (e.g., pollen, foods). In gut health, it plays only an indirect role: true food allergies (e.g., to milk, egg, nuts) can cause gastrointestinal symptoms like abdominal pain, nausea, or diarrhea. The test can help identify trigger allergens. However, most digestive complaints are not IgE-mediated but stem from intolerances (lactose, fructose) or functional disorders. A positive IgE test without clinical symptoms often leads to unnecessary dietary restrictions. Evidence for using IgE tests in unclear gut issues is weak; guidelines recommend them only when allergy is suspected. Direct-to-consumer (DTC) tests are often unreliable and should not be used for gut health optimization. Caveat: False positives can cause harmful dietary changes. Evidence: human-strong for allergy diagnosis, but for gut health the role is indirect and limited.