Myths vs facts: IgG Unverträglichkeitstest and weight loss

IgG food intolerance tests are often marketed for weight loss, but the scientific evidence is weak. IgG antibodies indicate immune exposure, not necessarily intolerance or inflammation. No robust studies show a causal link between IgG reactivity and weight loss. Evidence is limited to mechanistic plausibility and small, non-randomized observations. Any weight loss from IgG-based diets is likely due to placebo effects or general calorie restriction. Unnecessary elimination diets can also lead to nutrient deficiencies. Consumers should be skeptical and rely on evidence-based approaches like balanced diet and exercise. IgG tests for weight management are not validated.