Evidence check: IgG in the context of Abnehmen

The use of IgG testing in the context of weight loss is not supported by scientific evidence. These tests are often marketed as 'food sensitivity tests' claiming that avoiding certain foods can lead to weight reduction. However, medical evidence shows that IgG antibodies to foods are typically a sign of normal immune exposure, not intolerance or allergy. Studies indicate poor reproducibility and high variability of IgG test results. Neither the German Nutrition Society nor international medical guidelines recommend IgG-based elimination diets for weight management. The products mentioned in the context (e.g., KombiCheck) are marketed as lifestyle tools, not medical diagnostics. An evidence-based approach to weight loss includes calorie balance, macronutrient quality, and physical activity – not IgG values. Caveat: Misinterpretation may lead to unnecessary dietary restrictions and nutrient deficiencies. Evidence level: marketing/unclear.