ist vollkornreis glutenfrei — what symptoms are typical?

Yes, whole grain rice is naturally gluten-free because rice does not contain gluten. However, processed rice products (e.g., rice flakes, rice bread) may be cross-contaminated with gluten-containing grains, so look for explicit gluten-free labeling. Typical symptoms of gluten-related disorders (celiac disease or non-celiac gluten sensitivity) include: diarrhea, bloating, abdominal pain, fatigue, headaches, skin rashes, and joint pain. In celiac disease, long-term nutrient deficiencies (iron, vitamin B12, folate) can also occur. Genetic testing for HLA-DQ2/DQ8 or a duodenal biopsy is more diagnostically reliable than a consumer DNA test. The evidence for symptoms is strong, but this question is not covered by the provided context – hence a conservative evidence rating.