Myths vs facts: IgG Unverträglichkeitstest and longevity

IgG food intolerance tests are often marketed as tools to identify food sensitivities and promote longevity. However, the scientific evidence is weak: IgG antibodies to foods are typically a sign of normal immune exposure, not intolerance or allergy. Studies show no reliable correlation between IgG levels and clinical symptoms. Professional bodies like the European Academy of Allergy and Clinical Immunology (EAACI) advise against such tests. For longevity, there is no credible evidence—neither from aging research nor from nutritional medicine. These tests are expensive, lack standardization, and can lead to unnecessary dietary restrictions. Instead, focus on evidence-based strategies: balanced diet, exercise, stress management, and regular check-ups. The claim that IgG tests can extend lifespan is pure marketing.