Myths vs facts: IgE Allergietest and Stress

Myth: An IgE allergy test can reliably show whether stress triggers or worsens an allergy. Fact: IgE tests measure specific antibodies against allergens (e.g., pollen, foods). They indicate sensitization, not clinical allergy or stress-induced triggering. Stress can amplify symptoms (e.g., itching, hives) via immune mediators like cortisol and neuropeptides, but it does not generate new IgE responses. Evidence for a direct causal link between stress and IgE-mediated allergies is weak, based mostly on observational studies. Many people mistakenly believe a positive IgE test proves food intolerance – it actually reflects allergic sensitization, which often remains asymptomatic. For stress-related complaints, other diagnostic approaches (e.g., history, cortisol measurement) are more appropriate. Bottom line: IgE tests are valuable for allergy diagnosis but not for stress assessment. Marketing often overstates their power. Any result should be interpreted by a physician in clinical context.