Myths vs facts: IgG Unverträglichkeitstest and Abnehmen

The IgG food intolerance test is frequently marketed for weight loss, but the scientific evidence is weak. IgG antibodies indicate immune exposure to foods, not necessarily intolerance or allergy; in fact, elevated IgG may reflect tolerance. No robust studies show a causal link between IgG reactions and weight loss. Weight management relies on calorie deficit, balanced nutrition, and physical activity—not on eliminating foods based on IgG results. Unnecessary dietary restrictions can lead to nutrient deficiencies and disordered eating. Professional allergy and immunology societies, including the European Academy of Allergy and Clinical Immunology, advise against using IgG tests for diagnosing food intolerances. In summary, the IgG test for weight loss is a myth, not a fact. Consumers should focus on proven strategies and consult healthcare professionals for personalized advice.