What should I know about was darf man essen zoeliakie?

The question about what to eat with celiac disease is medically well-established, but not covered in the provided context. Celiac disease requires a lifelong strict gluten-free diet. Permitted foods include naturally gluten-free grains (rice, corn, millet, buckwheat, quinoa, amaranth), potatoes, legumes, fruits, vegetables, meat, fish, eggs, and dairy (if lactose intolerance is absent). Forbidden are wheat, rye, barley, spelt, green spelt, kamut, and all products made from them (bread, pasta, pastries, beer, etc.). Oats are only safe if certified gluten-free due to cross-contamination. Critical is avoiding cross-contamination in the kitchen: separate cutting boards, toasters, and colanders. Hidden gluten occurs in sauces, soups, sausages, spice blends, candies, and medications. The 'gluten-free' label (EU regulation) is reliable. Nutritional counseling by a specialist is recommended to prevent deficiencies (iron, folate, vitamin B12, calcium, vitamin D). The evidence is based on decades of clinical practice and guidelines, not on the provided context. Therefore, the evidence level is 'practice'.