How are IgE Allergietest and Stress related?

An IgE allergy test measures specific antibodies against allergens (e.g., pollen, foods) and is used to diagnose type I allergies. Stress, on the other hand, is a physiological and psychological state mediated by hormones like cortisol and the autonomic nervous system. There is evidence that chronic stress can exacerbate allergic reactions by altering immune regulation (e.g., Th2 shift, increased histamine release from mast cells). However, the evidence for a direct causal link between stress and elevated IgE levels is limited and mostly derived from observational studies. An IgE test is not a stress marker; it only captures sensitization to allergens. The clinical relevance of stress as a modulator of allergy symptoms is recognized, but measuring IgE alone says nothing about current stress levels. For a comprehensive assessment, additional tools such as stress questionnaires or biomarkers like cortisol should be used. The evidence level is moderate: mechanistic and epidemiological studies exist, but no randomized controlled trials establish causality.