MyBody-X angle on IgG Unverträglichkeit Basis

The MyBody-X IgG intolerance test measures IgG antibodies against foods and claims to identify dietary triggers for symptoms like bloating or fatigue. However, the scientific consensus is clear: IgG-based food intolerance tests have no validated clinical utility. The only guideline cited in the context (PMID:37705676) is a German S2k guideline on drug hypersensitivity, which explicitly states that IgG testing is not recommended for diagnosing hypersensitivity reactions. Major allergy societies (EAACI, AAAAI, BSACI) similarly advise against using IgG panels for food-related symptoms. IgG antibodies to foods are often a normal immune finding, reflecting tolerance or exposure, not intolerance. The test can lead to unnecessary restrictive diets, nutritional deficiencies, and false reassurance. MyBody-X should clearly communicate that this test is not a medical diagnostic tool. The evidence level is 'mixed': mechanistic plausibility exists, but clinical validation is lacking. Consumers with persistent symptoms should consult a physician or registered dietitian.