What do studies say about IgG Unverträglichkeit Frauen?

Scientific evidence for IgG food intolerance testing, especially in women, is weak and controversial. IgG antibodies to foods merely reflect immune exposure, not intolerance or allergy. Major allergy and immunology societies (EAACI, DGAKI, AAAAI) advise against IgG-based tests due to high false-positive rates and lack of clinical validity. Some studies report that women more often experience non-specific digestive complaints, which may drive demand for such tests, but no sex-specific biological mechanism has been confirmed. The few available studies are small, not placebo-controlled, or industry-funded. For suspected food intolerance, evidence-based approaches include symptom diaries, physician-supervised elimination diets, and validated tests (e.g., lactose hydrogen breath test). IgG testing is not recommended for routine diagnosis. Caveat: Do not change your diet based solely on an IgG test without consulting a healthcare professional.