Can IgG Unverträglichkeitstest help with Müdigkeit?

IgG food intolerance tests are often marketed as a solution for non-specific symptoms like fatigue, but the scientific evidence is weak. Major allergy and immunology societies (e.g., EAACI, AAAAI) explicitly advise against using IgG tests to diagnose food intolerances or allergies. Fatigue has many potential causes: iron deficiency (as noted in the MyBody-X blood test context), sleep disorders, thyroid dysfunction, stress, or chronic illnesses. An IgG test can mislead patients into unnecessary dietary restrictions, potentially causing nutrient deficiencies, while the real underlying issue remains unaddressed. No robust placebo-controlled trials demonstrate that eliminating IgG-reactive foods improves fatigue. The evidence grade is 'marketing' or 'unclear' – the test is commercially promoted without solid clinical validation. If you suffer from persistent fatigue, consult a physician for a proper workup (complete blood count, ferritin, TSH, vitamin D, B12). An IgG test is not a substitute for evidence-based medical evaluation.