Evidence check: IgG Unverträglichkeitstest in the context of Schlaf

IgG food intolerance tests are often marketed for sleep issues, but the scientific evidence is very weak. IgG antibodies to foods typically indicate normal immune exposure, not intolerance. No reliable studies link IgG reactivity to sleep quality. Major allergy organizations (e.g., AAAAI, EAACI) advise against these tests. They can lead to unnecessary dietary restrictions and nutrient deficiencies without improving sleep. Evidence: marketing. Sources: none in provided context.