Questions people ask about IgG Unverträglichkeit Genetik

Many people ask whether genetics can explain IgG-based food intolerances. The short answer: no, not reliably. While some genetic variants (e.g., in HLA or lactase genes) influence certain food reactions, IgG testing for 'delayed intolerances' lacks robust clinical evidence. Most IgG tests marketed directly to consumers are not validated for diagnosis; they often produce false positives and lead to overly restrictive diets. The few well-established genetic intolerances (lactose, gluten) are diagnosed via specific tests, not IgG panels. Therefore, basing dietary decisions on a DTC DNA test for IgG intolerance is not supported by current science. Consumers should consult a doctor or dietitian for evidence-based approaches like elimination diets or validated breath tests.