Myths vs facts: IgG Unverträglichkeitstest and sleep

IgG food intolerance tests are marketed to identify ‚delayed‘ sensitivities, but the scientific evidence is weak. Measured IgG antibodies often reflect normal immune exposure—e.g., from frequently eating a food—not a pathological reaction. Major allergy societies (EAACI, AAAAI) advise against using IgG tests for diagnosis. There is no proven link between IgG-based ‚intolerance‘ and sleep quality. Sleep disturbances are multifactorial: stress, poor sleep hygiene, hormonal shifts, overall diet, or conditions like sleep apnea. If you sleep poorly after meals, consider true allergies, histamine intolerance, or acid reflux instead of relying on IgG lists. These tests are costly, not reimbursed, and may lead to unnecessary restrictive diets. My advice: focus on a balanced diet and consistent sleep routine rather than questionable IgG panels.