What to watch with IgG Unverträglichkeitstest and fatigue?

When considering an IgG intolerance test for fatigue, caution is warranted. IgG tests lack robust scientific validation for diagnosing food intolerances; they produce many false positives and are not designed to assess fatigue. Fatigue has numerous potential causes (iron deficiency, thyroid dysfunction, sleep disorders, stress, etc.) that an IgG test cannot address. A positive result may lead to unnecessary dietary restrictions, potentially worsening nutrient deficiencies. MyBody-X itself notes that IgG tests are not recommended for children and aims to debunk myths. Therefore, consult a physician before making dietary changes based on such tests. Evidence: marketing/unclear.