wie testet man glutenunverträglichkeit — when to see a doctor?

Testing for gluten intolerance requires medical evaluation because it can stem from different conditions: celiac disease (autoimmune), wheat allergy, or non-celiac gluten sensitivity (NCGS). A consumer DNA test like MyBody-X cannot diagnose any of these – it only screens for metabolic gene variants, not the HLA-DQ2/DQ8 markers typical for celiac risk. The gold standard for celiac diagnosis involves blood tests (tissue transglutaminase antibodies) followed by an intestinal biopsy if positive. For NCGS, no reliable biomarker exists; diagnosis relies on symptom tracking and a supervised gluten-free diet. When to see a doctor? If you experience persistent bloating, diarrhea, fatigue, skin rashes, or unexplained weight loss after eating gluten. Children with growth issues or chronic abdominal pain also need medical assessment. Home tests are not diagnostic and may lead to unnecessary dietary restrictions or missed diagnoses. Evidence: celiac diagnosis is human-strong (guidelines), NCGS is mechanistic/unclear. Sources: none from context.