What to watch with IgG Unverträglichkeitstest and sleep?

IgG intolerance tests are marketed to identify food sensitivities that might affect sleep, but the scientific evidence is weak. IgG antibodies indicate immune exposure, not necessarily intolerance or clinical symptoms. No robust studies show a causal link between IgG test results and sleep quality. Caution is warranted: these tests often lead to unnecessary dietary restrictions, potential nutrient deficiencies, and increased anxiety, which can worsen sleep. For sleep issues, evidence-based strategies (sleep hygiene, stress reduction, medical evaluation) are more effective. The test is not a validated diagnostic tool for sleep disorders.