Coeliac disease in children under-five: What parents need to know

Coeliac disease is an autoimmune condition where eating gluten – a protein found in wheat, barley, and rye – causes the body to damage its own gut. Unmanaged, it can lead to serious long-term health issues, including nutrient deficiencies, weakened bones, and intestinal complications.

Discovering that your child has coeliac disease can evoke both relief and apprehension. While a diagnosis brings clarity and reassurance that the condition isn’t more severe, it also brings significant, lasting changes.

Later-life problems, missed experiences, or the challenges of preventing cross-contamination will consume your thoughts. You’ll worry about birthday parties, playdates, or nursery snack times, agonising over whether your child will be excluded, how they might feel, and whether you will ever trust others to manage food around them.

This guide is designed to take the edge off the anxiety, making symptoms and everyday life manageable.

At a glance

Coeliac disease definition: Coeliac disease is a lifelong autoimmune condition. When you eat gluten, the body attacks the small intestine, which stops proper nutrient absorption. It is not an allergy or a choice. Managing it requires a strict gluten-free diet.

Symptoms of coeliac disease in children: In young children, common symptoms include stomach aches, bloating, fatigue, vomiting, and problems with growth or weight gain. If you suspect coeliac disease, consult a GP before changing their diet. Children must keep eating gluten until testing is complete.

Managing coeliac disease: After diagnosis, work with a dietitian, learn to spot gluten on labels, and prevent cross-contamination in the kitchen by using separate utensils, storage, and appliances.

Supporting your child: Communicate openly with nurseries and schools to ensure a safe environment. Use positive, age-appropriate language to help your child understand their condition and normalise their dietary needs.

What is coeliac disease?

Coeliac disease is a lifelong condition where the body’s immune system attacks the small intestine when you eat gluten. This stops the body from absorbing nutrients needed for energy, growth, healing, and overall health. It is not an allergy, a food intolerance, a fad, or a choice.  The only treatment is a strict gluten-free diet.

What are the symptoms of coeliac disease in young children?

Affecting approximately 1 in 100 people (though Coeliac UK reports that only 36% of those are diagnosed), symptoms vary:

• Stomach aches, bloating or constipation
• Pale, clay-coloured, or foul-smelling stools
• Flatulence or diarrhoea
• Feeling poorly, irritable, tired, or vomiting
• Difficulty gaining weight, weight loss, or slow growth.

Because children often experience these symptoms as they grow, recognising how often they happen is key. If you are concerned, speak to your GP rather than attempting self-diagnosis.

How is coeliac disease tested for in children?

Testing for coeliac disease begins with a blood test for the following antibodies – immunoglobulin A (IgA) and IgA tissue transglutaminase (tTGA). If results are positive, a specialist will guide you through any next steps. Sometimes a biopsy is needed, but not always.

• Keep eating gluten: Your child needs to eat gluten in more than one meal per day for at least six weeks before testing. Otherwise, the results may not be accurate.
• Don’t go gluten-free: Wait until a specialist confirms coeliac disease before removing gluten from your child’s diet.

What should I do after my child is diagnosed with coeliac disease?

First, don’t focus on the negatives. Eliza, who was diagnosed with coeliac disease when she was five, sums it up perfectly by saying: “I’ve got a normal life, just like a normal person, just with a tiny, tiny little twist.” Use this checklist for the first few months:

• Specialist: Ask your healthcare team for a children’s dietitian. They’ll help you make sure your child gets everything they need on a gluten-free diet.
• Food: Choose naturally gluten-free foods like fruit, vegetables, meat, fish, and rice. Learn safe swaps for bread, pasta, and cereals.
• Labels: Always check for gluten in ingredient lists. Look for the “gluten-free” label or crossed grain symbol.
• Kitchen: Keep gluten-free foods and utensils separate. Don’t share butter, knives, or spoons.
• Support network: Make sure all caregivers know your child’s needs and how to avoid cross-contamination.
• Follow-ups: Go to all appointments to monitor your child’s growth and nutrient levels.

Take it one meal and one day at a time. You don’t need to be an expert right away.

What can a child with coeliac disease eat?

In short, a lot. Many foods are naturally gluten-free, but packaged or processed foods can carry a risk of cross-contamination depending on where they are manufactured. For example, your favourite chocolate bar might be gluten-free, but the same bar in a multipack manufactured elsewhere might not be.

• Check the labels: Thanks to food labelling laws, barley, rye, wheat, and oats are major allergens and will be identifiable in bold, underlined, or italicised text. Watch for ‘may contain’ warnings, highlighting the risk of cross-contamination. Always read the labels, even on familiar items, as recipes change.
• Download an app: Navigate food shops with a trusted, regularly updated barcode scanning app – such as Coeliac UK’s Live Well app.
• Ask: When eating out locally, always inform staff about your child’s coeliac disease when you arrive to ensure safe kitchen practices. Social media groups are also great for trusted travel recommendations.

Can you get gluten-free food on prescription?

Some UK residents are entitled to gluten-free staple foods on prescription, but rules vary by region. Scotland, Wales, and Northern Ireland offer broader access, whereas many areas in England do not. Often, only people under 25 are eligible, and in most areas, you might have to pay NHS prescription charges unless exempt.

How can I prevent gluten cross-contamination?

When it comes to coeliac disease, cross-contamination is, without question, the most misunderstood. Accidental exposure can sometimes trigger a delayed reaction – from mild tummy pains to severe sickness – making every crumb feel like a high-stakes roll of the dice.

• Gluten-free zone: Keep a separate cupboard and high fridge shelf just for gluten-free products to prevent mix-ups.
• Toaster: Use a separate toaster for gluten-free bread, or toaster bags. A toaster can trap hidden crumbs.
• Spreads: Use separate, labelled products. Never share with anyone who eats gluten containing foods.
• Utensils: Use separate equipment and avoid wooden spoons and boards; use stainless steel or plastic instead.
• Sieve and strain: Never share pasta water or colanders.
• Cooking: Wipe down surfaces and cook gluten-free meals first, keeping them covered and away from airborne flour.

What should I tell my child’s nursery?

Starting nursery or school is a big milestone, but with planning and open communication, you can help your child settle in safely and happily.

• Meet the team: Meet staff and catering before your child starts providing clear guidance and lists of safe/unsafe foods.
• Explain the condition: Ensure staff understand coeliac disease isn’t contagious and know your child’s specific exposure symptoms.
• Stay vigilant: Remind staff about shared items like playdough, dried pasta, or accidental food swaps. Hands need to be clean – not an easy feat at nursery.
• Ensure inclusion: Pack safe lunchboxes, snacks, and party alternatives so your child never feels left out.

In the early days of a diagnosis, trusting other people will be difficult. Starting nursery, school, going to parties, or eating out can feel daunting, but open communication is key.

What happens if my child accidentally eats gluten?

Symptoms vary, from tummy pain, vomiting, and lethargy to no visible signs at all, but internal harm still occurs. Of course, accidents happen, so try not to feel guilty. If an accident happens, stay calm, give fluids, and comfort your child. Contact your healthcare team if symptoms are severe, frequent, or if you need advice.

How can I help my young child understand coeliac disease?

While it’s never easy to tell a child that they can’t have a certain food when everyone else is, talking to them openly, teaching them about their diet step by step, and focusing on praise and encouragement rather than fear will help.

• Healthy habits: Teach the “Ask first” rule, always checking with an adult they trust before eating something new.
• Choose words carefully: Try not to say things such as “disease” or “normal bread”. Coeliac disease might be the clinical term, but to a child, the word disease can sound frightening, while the word normal could suggest they are missing out or that they, themselves, are not normal.
• Inclusion: At parties, ask the host if you can bring a gluten-free treat so your child is included, and check what other food will be served so you can match the items with gluten-free alternatives. Party food boxes are popular, so don’t be afraid to ask the host for one.
• Normalisation: Remind your child that everyone is different. Some children have allergies, some need glasses, and some need special food to stay healthy.

Will my child’s health and growth be monitored?

Yes. Your child’s health and growth will be monitored with regular blood tests and check-ups. These reviews track height, weight, and development to make sure your child is thriving on a gluten-free diet.