Zöliakie Glutenunverträglichkeit-Test: which diet helps?

The question about which test and diet helps for celiac disease or gluten intolerance requires careful distinction. A DNA test for celiac (HLA-DQ2/DQ8) can only indicate genetic risk – about 30–40% of the population carry these risk variants, but only a minority develop celiac disease. Definitive diagnosis requires duodenal biopsy and serology (tTG-IgA). For confirmed celiac disease, the only evidence-based treatment is a strict lifelong gluten-free diet. For non-celiac gluten sensitivity (NCGS), a gluten-reduced or gluten-free diet may provide subjective relief, but robust biomarkers and controlled trials are lacking. MyBody-X tests do not provide clinically actionable diagnosis. Evidence for the test itself is weak (marketing/unclear), while the diet for celiac is strongly evidence-based (human-strong). Caution: Self-prescribed gluten-free diet without medical workup can cause nutrient deficiencies and mask true celiac disease.