Introduction
Celiac disease is an autoimmune condition triggered by gluten, a protein found in wheat, barley, and rye. In people who are genetically predisposed, eating gluten causes the immune system to attack the lining of the small intestine, damaging the structures responsible for absorbing nutrients. Left undiagnosed, this can lead to a wide range of problems well beyond digestion. At KAGE, celiac disease is diagnosed through proper testing — not assumed from symptoms alone — and managed with structured dietary guidance rather than a one-time diagnosis and a pamphlet.
How common is celiac disease — and does it matter that KAGE is in South India?
This is worth addressing directly rather than skipping past. Celiac disease in India shows a striking regional pattern: North Indian states — Punjab, Haryana, Delhi, Rajasthan, and Uttar Pradesh, sometimes called India's 'celiac belt' — have a prevalence around 1%, comparable to Western countries, closely tied to very high wheat consumption in the local diet. South India has historically reported far lower rates, and studies have found this gap correlates with wheat intake, not genetic differences — the genes that predispose to celiac disease (HLA-DQ2/DQ8) are present at broadly similar rates across Indian regions. In practice, this means two things for someone in Hyderabad: celiac disease is genuinely less common here than in North India, but it isn't absent, and it may be under-suspected precisely because of the regional reputation — especially as diets shift and wheat consumption increases. Nationally, celiac disease diagnosis has been rising, with some estimates suggesting the recognized prevalence has been doubling roughly every two decades as awareness improves.
Celiac disease, gluten sensitivity, and wheat allergy: not the same thing
| Celiac disease | Non-celiac gluten sensitivity | Wheat allergy | |
|---|---|---|---|
| What it is | Autoimmune reaction damaging the intestine | Gluten-related symptoms without intestinal damage | An allergic (IgE) reaction to wheat proteins |
| Testing | Blood antibody test plus intestinal biopsy | No specific test — diagnosis of exclusion | Allergy testing (skin prick or blood) |
| Long-term risk if untreated | Nutrient deficiencies, bone loss, and other complications | Not typically associated with the same long-term damage | Risk of allergic reactions, including severe ones |
This distinction matters because the right test depends on which of these is actually suspected — and self-diagnosing based on symptom relief from a gluten-free diet, without proper testing first, can make celiac disease harder to confirm later.
Symptoms of celiac disease
- Chronic diarrhea, bloating, or abdominal pain
- Unexplained weight loss
- Iron-deficiency anemia that doesn't respond to iron supplements alone
- Persistent fatigue
- In children: growth delay or failure to thrive
- Bone or joint pain, related to poor calcium and vitamin D absorption
- Some people have minimal or no digestive symptoms at all, with the condition only found through screening or investigation of an unrelated issue like anemia
Who's at higher risk
- A first-degree relative (parent, sibling, or child) with celiac disease
- Type 1 diabetes
- Autoimmune thyroid disease
- Down syndrome
- IgA deficiency — relevant because it can cause a false-negative result on standard celiac blood testing, requiring an alternative test
How celiac disease is diagnosed
- Blood test for tissue transglutaminase IgA antibodies (tTG-IgA) — the standard first-line screening test
- Small intestinal biopsy during upper GI endoscopy — confirms the diagnosis by directly examining the intestinal lining for damage
- Genetic testing (HLA-DQ2/DQ8), occasionally used to help rule out celiac disease in unclear cases
Celiac disease treatment: a lifelong dietary approach
- A strict, lifelong gluten-free diet is the only treatment — there is no medication that allows normal gluten consumption while preventing intestinal damage
- Referral to a dietitian experienced in gluten-free planning is strongly recommended, since gluten is present in many less-obvious foods and cross-contamination is a common cause of ongoing symptoms
- Correcting nutrient deficiencies — iron, calcium, vitamin D, and B12 are commonly low at diagnosis and may need supplementation
- Follow-up blood testing, typically 6–12 months after starting a gluten-free diet, to confirm the antibody levels are falling as expected
- A repeat biopsy is sometimes recommended to confirm the intestinal lining has healed, particularly if symptoms or blood tests haven't fully normalized
Possible complications if left untreated
- Ongoing malabsorption of iron, calcium, vitamin D, and other nutrients
- Osteoporosis and increased fracture risk
- Infertility and reproductive complications in some cases
- Growth delay in children
- A small but real increased long-term risk of intestinal lymphoma, particularly with long-standing, undiagnosed, or poorly managed disease
Celiac disease care at KAGE
Celiac disease is frequently mistaken for IBS for years before it is identified, particularly when the complaint is bloating or chronic diarrhoea rather than weight loss. Diagnosis is confirmed with serology followed by upper GI endoscopy and biopsy — both done before gluten is removed from the diet, because stopping early makes the tests unreliable. Our gastroenterologists then set up long-term follow-up, including bone density and nutritional monitoring, and children are seen through pediatric celiac care. To start the workup in the right order, book a consultation.
Frequently asked questions
Celiac disease is an autoimmune condition that damages the intestine and is confirmed with blood tests and biopsy. Non-celiac gluten sensitivity causes similar symptoms without that intestinal damage and has no specific diagnostic test — it's diagnosed by ruling out celiac disease and wheat allergy first.
It's better to get tested first. Stopping gluten before testing can cause a false-negative result, making it harder to get a clear diagnosis later — which matters for long-term monitoring and for screening family members.
There's no cure, but it's very manageable — a strict, lifelong gluten-free diet allows the intestine to heal and prevents ongoing damage in the large majority of patients.
Diagnostic testing and consultations are generally covered under standard health insurance; dietary counseling and specialty gluten-free products are typically not. Our team can help clarify what's covered during consultation.
No — celiac disease is lifelong. Children diagnosed with it need the same ongoing gluten-free management as adults, ideally with pediatric dietitian support.
This is common and usually traces back to hidden sources of gluten or cross-contamination rather than treatment failure. A dietitian review often identifies the source; persistent symptoms despite genuinely strict avoidance need specialist re-evaluation.
Yes — first-degree relatives have a meaningfully higher risk and may be worth testing, even without symptoms, given how variable the presentation can be.
Yes — unexplained anemia, fatigue, bone or joint pain, and growth delay in children can all be presentations of celiac disease, sometimes without any digestive symptoms at all.
A wheat allergy is an immune (IgE) reaction that can cause immediate allergic symptoms and is diagnosed with allergy testing. Celiac disease is a distinct autoimmune process causing gradual intestinal damage, confirmed with antibody testing and biopsy rather than allergy testing.
Often, yes — particularly if symptoms or blood tests haven't fully normalized, to confirm the intestinal lining has actually healed rather than assuming it based on feeling better.
Book a consultation at KAGE
Speak to a KAGE gastroenterologist about your symptoms, your diagnosis, or a second opinion.