Evidence check: IgG Unverträglichkeitstest in the context of Fruchtbarkeit

IgG-based food intolerance tests are marketed for various health concerns, including fertility, but they lack scientific validation. Medical guidelines (e.g., from EAACI and AAAAI) explicitly advise against using IgG tests to diagnose food allergies or intolerances, as IgG antibodies reflect normal immune exposure, not pathology. There is no robust evidence linking IgG reactivity to fertility outcomes. For couples trying to conceive, standard fertility workups (ovulation tracking, semen analysis, hormonal assessment) are recommended. Relying on IgG tests may lead to unnecessary dietary restrictions and delay proper diagnosis. Evidence grade: marketing/unclear.