ist reis glutenfrei — what are common causes?

Yes, rice is naturally gluten-free. Gluten is a protein found in wheat, barley, and rye – not in rice. However, common causes of confusion include cross-contamination during processing (e.g., rice pasta or rice crackers made in shared facilities), added ingredients in flavored rice mixes, or mislabeling. Some people also mistakenly think rice contains gluten because they associate it with 'grains' or because they experience bloating after eating rice (which may be due to other compounds like resistant starch or FODMAPs, not gluten). For individuals with celiac disease or gluten sensitivity, plain rice is safe. The evidence is strong: rice itself has no gluten. But for packaged rice products, always check for a certified gluten-free label. Consumer DNA tests for gluten sensitivity are not diagnostic; clinical evaluation is recommended. In summary: rice is gluten-free, but cross-contamination and added ingredients are the main pitfalls.