Evidence check: IgG Unverträglichkeitstest in the context of blood sugar

IgG food intolerance tests are often marketed as tools to identify dietary triggers, but the scientific evidence is weak. IgG antibodies to foods are typically a sign of normal immune exposure, not intolerance or allergy. In the context of blood sugar, no validated studies support the use of such tests. Blood glucose regulation is primarily driven by carbohydrate intake, insulin sensitivity, and hormones like cortisol – not by IgG responses. Therefore, an IgG test cannot provide meaningful insights for blood sugar management. The risk lies in unnecessary dietary restrictions that may lead to nutrient deficiencies or disordered eating. For evidence-based blood sugar control, established methods like continuous glucose monitoring (CGM) or HbA1c testing combined with medical guidance are recommended. This test should be classified as a marketing tool, not a diagnostic device.