Lay opinion vs evidence: IgG Unverträglichkeit Senioren

The lay opinion that IgG tests can reliably diagnose food intolerances in seniors is not supported by evidence. IgG antibodies to foods are a normal physiological response to dietary exposure and do not indicate intolerance or allergy. Major allergy organizations (e.g., EAACI, AAAAI) explicitly advise against using IgG tests for diagnosis, as they lack reproducibility and clinical validity. In seniors, polypharmacy, gut microbiome changes, and immunosenescence further complicate interpretation. The evidence base is essentially marketing-driven, with no robust human trials showing benefit. A more evidence-based approach involves symptom tracking and a medically supervised elimination diet, not IgG panels.