Questions people ask about Gluten Alltag

Questions about gluten in daily life often revolve around whether a gluten-free diet is beneficial. It's crucial to distinguish between celiac disease (an autoimmune condition with clear diagnostic criteria) and non-celiac gluten sensitivity (NCGS), which is less well-defined scientifically. Many people report symptom improvement on a gluten-free diet, but placebo effects and other dietary components (e.g., FODMAPs) may contribute. Direct-to-consumer DNA tests (like MyBody-X) sometimes analyze variants in HLA-DQ2/DQ8 (risk markers for celiac) or genes involved in gluten digestion. The evidence for such tests is limited: HLA testing has high negative predictive value, but a positive result does not diagnose celiac disease. Other 'gluten sensitivity' markers are not clinically validated. Without medical workup (blood tests, biopsy), a DNA test cannot replace a diagnosis. For daily life, if gluten issues are suspected, consulting a physician before making drastic dietary changes is recommended. The overall evidence level is 'unclear' to 'mechanistic', as robust studies on DNA tests for gluten sensitivity are lacking.