Common mistakes around IgG Unverträglichkeit Genetik

A common mistake is assuming that an IgG food intolerance test provides a valid diagnosis. IgG antibodies merely indicate exposure to a food, not necessarily an intolerance or allergy. Even more problematic is the idea that a genetic test can predict IgG-mediated food intolerance: there are no established genetic variants that reliably determine such reactions. Many commercial tests measure total IgG or IgG4, but elevated IgG4 may actually reflect tolerance rather than intolerance. These tests often lead to unnecessary dietary restrictions and potential nutrient deficiencies. The gold standard for diagnosing food intolerance remains a thorough clinical history, elimination diet, and blinded provocation. Genetic testing for IgG-based food intolerance is not supported by current evidence and should be viewed with skepticism. Consumers should be aware that marketing claims often overstate the science.