Evidence check: IgG Unverträglichkeitstest in the context of weight loss

IgG food intolerance tests are often marketed for weight loss, but the scientific evidence is weak. These tests measure IgG antibodies to foods, which typically reflect normal immune exposure, not true intolerance. Randomized controlled trials have not demonstrated meaningful weight loss from IgG-guided elimination diets. Major health organizations (e.g., DGE, EAACI) advise against their use due to lack of validity and risk of unnecessary dietary restrictions. For weight loss, evidence supports calorie restriction, physical activity, and behavioral changes. MyBody-X does not offer IgG tests; its DNA and biomarker tests have limited clinical utility for weight management. Caveat: IgG tests should not replace medical evaluation for suspected IgE-mediated food allergies.