When is IgG Unverträglichkeit Basis actually useful?

The IgG food intolerance test (e.g., IgG Basis) is often marketed as a tool to identify food sensitivities. However, scientific evidence is weak: elevated IgG levels typically reflect a normal immune response to common foods, not a true intolerance or allergy. Medical societies like the German Society for Allergology and Clinical Immunology advise against these tests because they can lead to unnecessary diets and nutritional deficiencies. The test may be useful only in a controlled elimination diet under medical supervision, to monitor dietary compliance – not for standalone diagnosis. Without professional interpretation, results are often misleading. MyBody-X offers such tests but states they are not diagnostic. Anyone suspecting real allergies or intolerances (e.g., lactose, fructose, celiac) should consult a doctor and use validated methods.