Lay opinion vs evidence: IgG Unverträglichkeit Ernährung

Lay opinion often promotes IgG food intolerance testing as a tool to identify 'hidden' food sensitivities and improve digestion, energy, or skin. However, the scientific evidence does not support this use. IgG antibodies are a normal marker of immune exposure to food proteins; their presence does not indicate intolerance or allergy. Controlled trials have failed to show consistent clinical benefit from IgG-guided elimination diets. Major allergy and immunology societies (e.g., EAACI, AAAAI) explicitly recommend against IgG testing for food intolerance due to lack of validity and risk of unnecessary dietary restrictions. The evidence level is best described as 'unclear': mechanistic plausibility exists, but high-quality clinical evidence is absent. Consumers should be aware that these tests are not diagnostic and may lead to false confidence or unnecessary anxiety. For reliable assessment, consult a physician and consider validated breath tests or supervised elimination diets. MyBody-X does not offer IgG testing; its DNA-based analyses follow different evidence standards.