What is Celiac Disease?
Celiac disease (gluten intolerance) is a chronic autoimmune disorder triggered by the consumption of gluten, a protein found in wheat, barley, rye, and sometimes oats.
When individuals with celiac disease consume gluten, their immune system attacks the small intestine, damaging the villi—tiny, finger-like projections that absorb nutrients. This can lead to malabsorption, nutritional deficiencies, and a variety of health issues.
It affects approximately 1% of the global population, though many cases remain undiagnosed. It is a genetic condition, often running in families, and can develop at any age.
Celiac Disease Symptoms
Celiac disease presents a wide range of symptoms, which can vary significantly between individuals. Common symptoms include:
- Digestive Issues: Bloating, diarrhea, constipation, abdominal pain, and gas.
- Nutritional Deficiencies: Fatigue, weight loss, anemia (due to iron deficiency), and deficiencies in vitamins D or B12.
- Skin Problems: Dermatitis herpetiformis, an itchy, blistering rash often appearing on the elbows, knees, or buttocks.
- Neurological Symptoms: Headaches, brain fog, peripheral neuropathy, or depression.
- Other Symptoms: Joint pain, bone loss (osteoporosis), infertility, or delayed puberty in children.
Some individuals may be asymptomatic (silent celiac disease), making diagnosis challenging without testing.
Celiac Disease Diagnosis
Diagnosis involves a multi-step process, typically starting with blood tests and confirmed by a biopsy:
- Blood Tests: These detect specific antibodies, such as:
- Anti-tissue transglutaminase (tTG-IgA)
- Anti-endomysial antibodies (EMA-IgA)
- Total IgA levels to rule out IgA deficiency.
A positive blood test suggests celiac disease but requires further confirmation.
- Genetic Testing: Tests for HLA-DQ2 or HLA-DQ8 genes can support the diagnosis, as these genes are present in nearly all celiac patients. However, their presence alone does not confirm the condition.
- Endoscopy and Biopsy: A gastroenterologist performs an upper endoscopy to take a small sample of the small intestine. The biopsy checks for villous atrophy, a hallmark of celiac disease.
It is critical to continue consuming gluten during testing, as a gluten-free diet can lead to false-negative results. At our diagnostic center, we offer comprehensive blood tests for celiac disease for reliable diagnosis.
Typical Celiac Disease Diagnostic Guide:
| Gene Test DQ2/DQ8 | Specific IgE/BAT tests | Serological Tests – Antibodies | LTT | Clinical Symptoms | Possible diagnosis | |
| 1 | + | – | – | – | – | Predisposition |
| 2 | – | + | – | – | + | Direct type allergy |
| 3 | – | + | – | – | – | Sensitization |
| 4 | – | – | + | – | – | Silent, asymptomatic |
| 5 | + | – | + | – | + | Positive |
| 6 | + | – | – | + | + | Positive |
| 7 | + | – | + | + | + | Positive |
| 8 | – | – | – | + | + | Hypersensitivity to gluten |
Celiac Disease Treatment
There is no cure, but it can be effectively managed through:
- Strict Gluten-Free Diet: The cornerstone of treatment is completely eliminating gluten from the diet. This includes avoiding wheat, barley, rye, and products like bread, pasta, and many processed foods. A gluten-free diet allows the small intestine to heal and symptoms to resolve.
- Nutritional Support: Many patients need supplements to address deficiencies (e.g., iron, vitamin D, or B12) caused by malabsorption. Our dietitians can assess and recommend personalized supplement plans.
- Regular Monitoring: Follow-up blood tests and consultations with a gastroenterologist or dietitian are essential to ensure the condition is well-managed and to monitor for complications like osteoporosis or small intestinal bacterial overgrowth (SIBO).
Celiac Disease Diet
A gluten-free diet is the only effective treatment for celiac disease. Key elements include:
- Safe Foods: Naturally gluten-free foods include rice, quinoa, corn, fresh fruits, vegetables, meat, fish, eggs, and dairy (unless lactose intolerance is present). Certified gluten-free products are also safe.
- Foods to Avoid: Wheat (including spelt, kamut, and farro), barley, rye, and some oats (due to cross-contamination). Always check labels for hidden gluten in processed foods, sauces, and medications.
- Cross-Contamination: Use separate kitchen tools (e.g., toasters, cutting boards) to avoid gluten exposure.
- Dining Out: Choose restaurants with gluten-free menus or certifications. Ask about preparation methods to avoid cross-contamination.
Additional Information for Managing Celiac Disease
Complications of Untreated Celiac Disease
If left untreated, celiac disease can lead to serious complications, such as:
- – Osteoporosis or osteopenia due to malabsorption of calcium and vitamin D.
- – Increased risk of other autoimmune disorders, such as type 1 diabetes or thyroiditis.
- – Small risk of intestinal lymphoma or other gastrointestinal cancers.
- – Infertility or recurrent miscarriages.
Pediatric Celiac Disease
Long-term issues for children with untreated celiac disease include poor growth, delayed puberty, short stature, and potential bone health issues like osteoporosis and nutrient deficiencies leading to anemia.
Neurological problems, such as headaches, balance issues, and learning difficulties, may also occur. Additionally, there is a slight increased risk of certain cancers, though this risk is mitigated by a strict gluten-free diet.
Early diagnosis and a gluten-free diet are critical for healthy development.
Frequently Asked Questions (FAQs)
Q: Can celiac disease develop later in life?
A: Yes, celiac disease can develop at any age, even in adulthood, often triggered by stress, pregnancy, or illness.
Q: Is celiac disease the same as a wheat allergy?
A: No, celiac disease is an autoimmune condition, while a wheat allergy is an allergic reaction. The two require different management strategies.
Q: How long does it take to feel better on a gluten-free diet?
A: Many patients notice improvement within weeks, but full gut healing can take months to years.
Useful Links:
Celiac Disease Diagnostic Tests
Celiac Disease Genetic Test 50€
Includes:
Genetic Test (HLA-DQ2/HLA-DQ8)
Basic Check 200€
Includes:
Endomysial Antibodies (EMA) IgA
Endomysial Antibodies (EMA) IgG
Tissue Transglutaminase Antibodies IgA
Tissue Transglutaminase Antibodies IgG
Gliadin Antibodies IgA
Gliadin Antibodies IgG
Immunoglobulin IgA
Genetic Testing (HLA-DQ2/HLA-DQ8)
Full Check 400€
Includes:
Endomysial Antibodies (EMA) IgA
Endomysial Antibodies (EMA) IgG
Tissue Transglutaminase Antibodies IgA
Tissue Transglutaminase Antibodies IgG
Gliadin Antibodies IgA
Gliadin Antibodies IgG
Immunoglobulin IgA
Specific IgE f4 (Wheat)
Specific IgE f79 (Gluten)
Specific IgE f98 (nGliadin, Wheat)
Specific IgE f416 (rTri a 19 Omega-5 Gliadin, Wheat)
Specific IgE f433 (rTri a 14 LTP, Wheat)
Genetic Testing (HLA-DQ2, HLA-DQ8)
Lymphocyte Transformation Test (LTT) BAG-F79 (Gluten, Wheat)