Can IgG Unverträglichkeitstest help with Schlaf?

IgG food intolerance tests are often marketed as a solution for sleep issues, but the scientific evidence is weak. IgG antibodies indicate immune exposure, not true intolerance or allergy. High-quality studies linking IgG reactions to sleep quality are lacking; most evidence is anecdotal or from uncontrolled trials. Sleep problems are multifactorial—stress, circadian rhythm disorders, hormonal changes, poor sleep hygiene, and medical conditions are far more relevant. Reputable allergy and immunology societies (e.g., EAACI, DGAKI) advise against IgG testing for diagnosing food intolerances. Using such tests to guide dietary changes for sleep improvement is not evidence-based and may lead to unnecessary dietary restrictions without benefit. If you have persistent sleep issues, consult a healthcare professional for proper evaluation (e.g., sleep study, blood work, mental health screening) rather than relying on unvalidated commercial tests.