Evidence check: IgG Unverträglichkeitstest in the context of longevity

IgG food sensitivity tests are often marketed as tools to improve health and longevity. However, the scientific evidence is weak: IgG antibodies to foods commonly reflect normal immune exposure, not pathology. Studies show high false-positive rates and no reproducible correlation with symptoms. In the longevity context, no randomized controlled trials demonstrate benefits for inflammation, metabolism, or lifespan. Major medical organizations, including the European Academy of Allergy and Clinical Immunology, advise against these tests. Evidence-based longevity strategies—such as a Mediterranean diet, regular exercise, and sleep hygiene—are far more impactful. Caveat: These tests are costly, lack standardization, and may lead to unnecessary dietary restrictions.