Your child hasn't been gaining weight well lately. Their belly is bloated, their stools are loose, and they seem more lethargic than usual. Could it be celiac disease?
Celiac disease is an autoimmune condition where the body reacts to gluten — a protein found in wheat, barley, and rye. In children, it is often identified when gluten is introduced into the diet. Left untreated, celiac disease can affect growth and development, but with the right diet, children with celiac disease live completely normal lives.
What Is Celiac Disease?
In celiac disease, gluten proteins damage the villi in the small intestine. Villi are small, finger-shaped projections that absorb nutrients from food. When they are damaged, absorption of important nutrients — including iron, calcium, vitamins, and energy — is reduced.
Celiac disease has a genetic component. If a parent or sibling has celiac disease, the child's risk is higher. Approximately 1% of the global population has celiac disease, but many are undiagnosed.
Celiac disease is not the same as gluten sensitivity. In celiac disease, measurable damage to the intestine occurs. In non-celiac gluten sensitivity, a person experiences discomfort without detectable intestinal damage. The treatment is the same (a gluten-free diet), but celiac disease requires medical follow-up.
Symptoms in Children
The symptoms of celiac disease vary with age and can be surprisingly different from child to child. Some have clear gastrointestinal symptoms, while others have vague complaints that are difficult to link to food.
Common Symptoms in Babies and Toddlers
- Poor growth and weight gain — the child is not following their growth curve
- Bloated, distended belly
- Diarrhea — chronic, pale, and foul-smelling stools
- Irritability and fussiness — the child seems uncomfortable
- Poor appetite — eats little and resists food
- Pale skin and fatigue — may indicate iron deficiency
Symptoms in Older Children
- Abdominal pain and nausea
- Constipation (yes, celiac disease can cause constipation, not just diarrhea)
- Delayed puberty
- Short stature compared to peers
- Dental enamel defects (permanent teeth)
- Recurrent mouth sores
- Concentration difficulties and fatigue
Contact your doctor if your child: Has chronic diarrhea, unexplained poor weight gain, a bloated belly, or seems unusually tired and pale over time. Early diagnosis is important to avoid nutritional deficiencies and ensure normal growth.
When Do Symptoms Appear?
Celiac disease can appear at any age, but is often identified:
- 6-24 months: After gluten-containing foods (cereals, bread, pasta) are introduced
- School age: Milder symptoms that were difficult to notice earlier
- Adulthood: Many people only receive a diagnosis as adults
Use a food introduction tracker to monitor how your baby responds to new foods, including gluten-containing ones.
How Is the Diagnosis Made?
The workup for celiac disease follows a standard procedure:
1. Blood Test
Your doctor orders a blood test measuring antibodies against tissue transglutaminase (anti-tTG) and total IgA. This test has high accuracy.
Important: The child must be eating a gluten-containing diet for at least 6 weeks before the blood test. If you have already removed gluten, tell the doctor. The result may be falsely negative without gluten intake.
2. Endoscopy with Biopsy
If the blood test is positive, the child is referred for an upper endoscopy. A thin tube with a camera is passed into the small intestine, and small tissue samples (biopsies) are taken and examined under a microscope.
The biopsy shows whether the villi are damaged, and to what degree. This is the gold standard for celiac disease diagnosis.
3. Confirmation
The diagnosis is confirmed when:
- Blood tests show elevated antibodies
- Biopsy shows villous atrophy
- Symptoms improve on a gluten-free diet
Who should be tested? The AAP recommends testing children with persistent gastrointestinal symptoms, unexplained poor growth, iron deficiency anemia, or first-degree relatives with celiac disease. Talk to your pediatrician.
Treatment: A Gluten-Free Diet
The treatment is simple in principle, but requires precision in practice. The child must eat completely gluten-free — for life.
What Contains Gluten?
- Wheat (all forms: flour, semolina, bulgur, couscous)
- Barley (including barley flour and malted barley)
- Rye (rye bread, rye flour)
- Spelt (a wheat variety that contains gluten)
What Is Naturally Gluten-Free?
- Rice, corn, buckwheat, millet, quinoa
- Potatoes, root vegetables
- All fruits and vegetables
- Meat, fish, eggs
- Milk and dairy products
- Beans, lentils, peas
- Nuts and seeds
- Oats (labeled gluten-free — pure oats without contamination)
Gluten-Free Daily Life with Children
The first few weeks require adjustment, but it quickly becomes a natural part of everyday life.
At home:
- Use gluten-free flour for baking (many good blends are available)
- Rice, potatoes, and gluten-free pasta as alternatives
- Separate cutting boards and toasters to avoid cross-contamination
- Read all ingredient labels carefully — gluten hides in many products
At daycare or school:
- Facilities are generally required to accommodate children with celiac disease
- Give notice early and collaborate on meal planning
- Create a simple overview of what the child can and cannot eat
- Make sure staff understand cross-contamination
Visiting and traveling:
- Inform hosts about the child's needs in advance
- Have gluten-free snacks available
- Check restaurant menus in advance
Practical tip: Use a shopping list to keep track of gluten-free staples the family needs. Track your child's growth to confirm that the gluten-free diet is working well.
Follow-Up Care
Children with celiac disease are followed by a specialist — typically a pediatric gastroenterologist.
Typical follow-up includes:
- Blood test check 3-6 months after starting a gluten-free diet (antibodies should decrease)
- Annual check-ups with blood tests, growth, and wellbeing assessment
- Guidance from a registered dietitian — especially important at the start
- Repeat biopsy after 1-2 years (to confirm intestinal healing)
Most children experience clear improvement within weeks of starting a gluten-free diet. The belly settles, energy increases, and growth picks up.
Can Your Child Live Normally?
Yes, absolutely. Children with celiac disease who follow a gluten-free diet live completely normal lives. Intestinal damage heals, nutrient absorption normalizes, and the child grows and develops as expected.
The range of gluten-free products in grocery stores is better than ever. Most recipes can be adapted, and an increasing number of restaurants and food establishments have good gluten-free options.
Organizations like the Celiac Disease Foundation and Beyond Celiac are valuable resources with recipes, product guides, and connections with other families in the same situation.
Frequently Asked Questions
Can a child grow out of celiac disease?
No. Celiac disease is a lifelong condition. The child will always react to gluten, even if symptoms may become milder over time. A gluten-free diet is necessary for life.
Is oat safe for children with celiac disease?
Pure, gluten-free oats (labeled with a gluten-free symbol) are safe for most people with celiac disease. A small number may still react to oats and should avoid them. Ask your doctor about gradually trying certified gluten-free oats.
Can I prevent celiac disease?
There is no known way to prevent celiac disease. Current guidelines recommend introducing gluten into the baby's diet from around 6 months of age, as part of normal food introduction. Delaying introduction does not provide protection.
Are siblings at higher risk?
Yes. First-degree relatives (parents and siblings) have a 5-15% risk of celiac disease. Screening blood tests are recommended for close family members when a diagnosis is made.
Summary
- Celiac disease affects approximately 1% of children globally and has a genetic component
- Typical signs include poor growth, bloated belly, diarrhea, and fatigue
- Diagnosis is made with blood tests and endoscopy with biopsy
- Treatment is a strict, lifelong gluten-free diet
- With the right diet, children with celiac disease live completely normal lives
Read More
- Food Introduction for Babies — when and how to start solids
- Allergens for Babies — safe introduction of allergenic foods
- Growth and Percentiles in Children — understanding your child's growth curve
Sources: Celiac Disease Foundation, AAP — Celiac Disease, WHO — Nutrition, Beyond Celiac
Last updated: March 2026