Celiac disease is a chronic autoimmune condition with a genetic basis (HLA-DQ2 and HLA-DQ8) in which consuming gluten—a protein found in wheat, barley, rye, and contaminated oats—triggers an immune response that damages the cells of the small intestine (villous atrophy). The result is malabsorption of nutrients (iron, folate, calcium, fat-soluble vitamins) and chronic inflammation. In Italy, celiac disease has an estimated prevalence of about 1% (600,000 diagnosed cases, with an equal number estimated to be undiagnosed). Diagnosis is based on: serology (tissue transglutaminase antibodies IgA: anti-tTG IgA, 95% sensitivity, 95%+ specificity for active celiac disease), upper endoscopy with duodenal biopsy (gold standard: documents villous atrophy according to Marsh classification), HLA typing (rules out celiac disease if negative: high sensitivity). The only effective and recognized treatment for celiac disease is a strict, lifelong gluten-free diet.

What contains gluten: the complete guide

Cereals containing gluten (strictly avoid): wheat (in all forms: spelt, Kamut, einkorn, bulgur, semolina, couscous, seitan). Barley (and therefore barley malt, traditional beer, whisky). Rye (rye bread, rye crackers). Triticale (wheat-rye hybrid). Oats: oats are naturally gluten-free but are almost always contaminated during production. Only certified "gluten-free" oats (produced in dedicated facilities) are safe for people with celiac disease. Gluten-free cereals (safe): rice, corn, millet, sorghum, teff, buckwheat, quinoa, amaranth. Certified gluten-free flours: rice flour, corn flour, buckwheat flour, chickpea flour, almond flour, coconut flour, tapioca flour. Foods at risk of cross-contamination: non-certified oat flakes, fried foods (fried in the same oil as gluten-containing products), fast-food burgers (contaminated griddles), artisanal baked goods, artisanal ice cream without certification, seasoning packets (some contain wheat starch), soy sauce (almost always contains wheat: use certified gluten-free tamari). Label warning: according to EU Regulation 41/2009 certification: "gluten free" = less than 20 ppm (mg/kg) of gluten. "Very low gluten" = less than 100 ppm (for some categories). Look for the crossed-out grain symbol (Italian Celiac Association) on packaging: it guarantees manufacturer quality control.

The risk of cross-contamination: how to manage it at home

Cross-contamination is accidental exposure to gluten through surfaces, utensils, or foods contaminated with gluten. For people with celiac disease, even a few dozen ppm can trigger an autoimmune response. In a household with both celiac and non-celiac members: use dedicated utensils for the celiac person (cutting board, colander, strainer: the colander is particularly critical because pasta leaves residue in the holes), oven: if you use baking sheets contaminated by gluten-containing products, wash them thoroughly or use dedicated parchment paper. The oven rack and grates must be cleaned before cooking for the celiac person. Toasted bread: a toaster contaminated with crumbs from regular bread is enough to contaminate gluten-free bread. Use a separate toaster or a specific bag for a shared toaster. Cooking water: don't cook gluten-free pasta in the same water as regular pasta (early cookings may seem safe but the water becomes contaminated). Flours: don't use gluten-containing flours in the same kitchen area without thorough cleaning (flour disperses in the air and contaminates surfaces). Shared butter, jam, mayonnaise: if someone has used the same knife on both regular bread and a shared jar, there's contamination. Use separate jars for the celiac person.

Living gluten-free with confidence: the lifestyle

A gluten-free diet isn't just a medical prescription—it's a lifestyle that touches every aspect of daily eating, from grocery shopping to dining out, from travel to social meals. At the supermarket: mandatory allergen labeling (EU Regulation 1169/2011) makes reading labels much easier. Gluten is one of 14 allergens that must be declared in bold. Many supermarkets have dedicated gluten-free sections (Esselunga, Coop, Conad have extensive certified ranges). At restaurants: always inform staff about celiac disease (not as a "preference": as a medical necessity). Ask if they have a certified gluten-free menu or can guarantee the absence of cross-contamination in the kitchen. If you can't get this assurance: choose naturally gluten-free dishes (grilled meat or fish without breading, salads without croutons). Chains with certified gluten-free menus in Italy: some fast-food chains and restaurants (McDonald's with gluten-free hamburgers at some locations, Rossopomodoro with certified gluten-free pizza, Fratelli La Bufala). When traveling: always carry a supply of certified gluten-free snacks. European countries with good gluten-free culture: United Kingdom, Netherlands, Ireland, Finland. More challenging countries: some countries in Southeast Europe and East Asia (where awareness is lower). The AIC (Italian Celiac Association) translation card in multiple languages explains celiac disease to restaurant staff abroad.

Nutritional deficiencies in celiac disease: what to monitor

At the time of diagnosis, many people with celiac disease have nutritional deficiencies from chronic malabsorption. The most common: iron (intestinal malabsorption: iron is absorbed in the duodenum, the first intestinal segment affected by villous atrophy). Often causes iron-deficiency anemia. Folate/folic acid (malabsorption in the jejunum). Calcium and vitamin D (malabsorption and resulting osteopenia/osteoporosis). Vitamin B12 (malabsorption in the terminal ileum in more extensive forms). Zinc, selenium, magnesium (general malabsorption). Recommended screening at diagnosis: complete blood count, ferritin, folate, vitamin B12, calcium, phosphorus, vitamin D, zinc, blood glucose, thyroid function (autoimmune thyroiditis is associated with celiac disease in 10-15% of cases). Monitoring: after 1-2 years of strict gluten-free diet, most people with celiac disease recover intestinal function and correct nutritional deficiencies. Periodic monitoring (every 1-2 years) of residual deficiencies is still recommended, especially for calcium, vitamin D, and ferritin.

Diagnosis in children: symptoms and pathway

Celiac disease in children often presents differently than in adults. Classic symptoms in young children (1-5 years): chronic diarrhea, growth failure, distended abdomen, irritability, muscle wasting, anemia. Atypical symptoms in older children (5-16 years): recurrent headaches, short stature, delayed puberty, recurrent abdominal pain without diarrhea, recurrent mouth ulcers, dermatitis herpetiformis (vesicular rash: cutaneous form of celiac disease). Diagnosis in children follows the same serological and biopsy pathway as in adults. Updates in the 2020 ESPGHAN guidelines: children with very high anti-tTG IgA (above 10 times the upper limit of normal), with compatible symptoms and HLA genotype can be diagnosed WITHOUT biopsy. This reduces discomfort for children. Screening in first-degree relatives: first-degree relatives of people with celiac disease (parents, siblings, children) have a 10-15% risk of having celiac disease. Serological screening is recommended even in the absence of symptoms. The Italian Celiac Association (celiachia.it) has guides for families with celiac children, school resources, and social management support.

Practical resources for people with celiac disease in Italy

AIC (Italian Celiac Association, celiachia.it): the main Italian resource for people with celiac disease. It has a database of certified products, restaurant guides, recipes, psychological support, and the AIC seal on safe gluten-free products. AIC Handbook: the updated list of all certified gluten-free food products available in Italy. Free download from the AIC app. Essential. NHS assistance: under Law 123/2005, the NHS provides a monthly reimbursement for purchasing gluten-free foods for diagnosed celiac patients (compensation for the higher cost of gluten-free products). The reimbursement varies by region (averaging 90-110 euros/month for adults, 150-200 euros/month for children). The request is made through your primary care doctor after confirmed diagnosis. Pharmacy and gluten-free products: gluten-free products in pharmacies are compensated with NHS vouchers. Gluten-free products in supermarkets and specialty chains (Naturasì, Bio c'Bon) are not compensated but have wider ranges. Online support groups: the AIC forum, the "Celiachia Italia" Facebook group, gluten-free cooking communities on Instagram (numerous and of increasing quality).