How are IgG Unverträglichkeitstest and gut health related?

IgG food intolerance tests measure IgG antibodies to foods, but these antibodies typically indicate normal immune exposure, not intolerance or allergy. There is no validated scientific link between IgG levels and gut health. Gut health involves microbiome composition, intestinal barrier integrity, and immune regulation—none of which are assessed by IgG panels. Professional medical organizations do not recommend IgG testing for food intolerance or gut issues. Evidence is weak and based on marketing rather than robust clinical studies. Consumers should be cautious: relying on IgG results may lead to unnecessary dietary restrictions without addressing underlying gut health. A better approach includes symptom tracking, evidence-based elimination diets, and consultation with a gastroenterologist or dietitian.