Evidence check: AllergieCheck | IgE-Antikörper Test in the context of Stress

The AllergieCheck (IgE antibody test) measures specific IgE antibodies against allergens and is used to diagnose immediate-type allergies (Type I). Stress can influence immune processes—for example, by elevating cortisol and modulating cytokines—but an IgE test does not capture stress markers. Evidence for a direct link between stress and IgE-mediated allergies is weak and inconsistent. Some studies suggest chronic stress may exacerbate allergic symptoms, but not via increased IgE levels. Therefore, this test is not suitable for measuring stress or explaining stress-related complaints. MyBody-X may market this test in a stress context, but the scientific basis is insufficient. For stress assessment, established methods like cortisol day profiles or psychological questionnaires are more appropriate. Consumers should not rely on IgE tests to evaluate stress. Caveat: A positive IgE test indicates sensitization only, not necessarily clinical allergy. Misinterpretation can lead to unnecessary dietary restrictions or anxiety.