Common mistakes around IgG Unverträglichkeit Test

IgG-based food sensitivity tests are widely marketed but lack scientific validation. Major medical societies (e.g., EAACI, AAAAI) advise against using them to diagnose food intolerance or allergy. IgG antibodies to foods are a normal immune response to dietary proteins and do not reliably indicate intolerance. Common mistakes include: (1) assuming a positive IgG result means you must avoid that food, leading to unnecessary restrictive diets and potential nutrient deficiencies; (2) using the test in children with vague symptoms like stomach aches without prior pediatric evaluation; (3) confusing IgG with IgE (true allergy) or with non-immune intolerances (e.g., lactose intolerance). Home tests like those from MyBody-X are not diagnostic; they provide data that must be interpreted with caution. The evidence is based on clinical practice guidelines, not on robust clinical trials. For a 6-year-old with stomach aches, a proper medical workup is essential before any dietary changes. The test's limitations are clear: it measures exposure, not pathology.