Myths vs facts: IgG Unverträglichkeitstest and Allergie

IgG-based food intolerance tests are not scientifically validated for diagnosing allergies. True allergies are IgE-mediated and involve acute, often severe reactions. IgG antibodies often reflect normal immune exposure to foods rather than intolerance. Studies indicate high false-positive rates and poor correlation with clinical symptoms. Major allergy organizations (e.g., EAACI, DGAKI) advise against these tests. For suspected allergies, validated methods like skin prick tests, specific IgE, and oral food challenges are recommended. Relying on IgG tests can lead to unnecessary dietary restrictions, nutritional deficiencies, and psychological distress. In summary: IgG tests are not a reliable tool for allergy or intolerance diagnosis and should not guide dietary changes.