When most people think of coeliac disease, they picture a child or a young adult struggling with digestive symptoms. But the reality is quite different. Research consistently shows that coeliac disease can be diagnosed at any age — and an increasing number of people are receiving their diagnosis in their 50s, 60s, and beyond. In Ireland, where coeliac disease rates are among the highest in Europe, this matters more than ever.
If you have been experiencing unexplained fatigue, digestive changes, or other persistent symptoms, coeliac disease might not be the first thing your GP considers. But it should be on the radar. Here is what you need to know.
TL;DR
- Coeliac disease can be diagnosed at any age — diagnosis rates in over-50s are rising, and Ireland has one of the highest prevalence rates in Europe.
- Symptoms in older adults are often atypical: anaemia, osteoporosis, fatigue, and neurological issues rather than classic digestive complaints.
- Diagnosis involves a simple blood test (tTG-IgA) followed by endoscopy — do not start a gluten-free diet before testing.
- A strict, lifelong gluten-free diet is the only treatment, and the gut can heal well even when diagnosed later in life.
- The Coeliac Society of Ireland and HSE CDM Programme provide practical support, dietary guidance, and community connection.
What Is Coeliac Disease?
Coeliac disease is an autoimmune condition where the body’s immune system attacks the lining of the small intestine when gluten is consumed. Gluten is a protein found in wheat, barley, and rye — which means it is in bread, pasta, cereals, biscuits, and many processed foods.
Over time, this immune response damages the tiny finger-like projections (villi) that line the small intestine, reducing the body’s ability to absorb nutrients from food. Left untreated, coeliac disease can lead to serious complications including osteoporosis, anaemia, and an increased risk of certain cancers.
It is important to understand that coeliac disease is not an allergy or a food intolerance — it is a lifelong autoimmune condition that requires medical diagnosis and management.
Why Is Late Diagnosis So Common?
One of the biggest challenges with coeliac disease in older adults is that symptoms can look very different from the textbook presentation. Younger people often present with classic digestive symptoms — diarrhoea, bloating, and weight loss. But in people over 50, the picture is frequently more subtle.
Common presentations in older adults include:
- Iron-deficiency anaemia that does not respond well to supplements
- Unexplained osteoporosis or osteopenia — sometimes the first clue
- Persistent fatigue that cannot be explained by other causes
- Neurological symptoms such as tingling, numbness, or balance difficulties
- Mouth ulcers, dental enamel problems, or dry mouth
- Unexplained liver enzyme elevations
- Depression or brain fog
Because these symptoms overlap with many other conditions — and because coeliac disease has historically been seen as a childhood condition — many older adults wait years before receiving the correct diagnosis. Research from TILDA (The Irish Longitudinal Study on Ageing) highlights that conditions like anaemia and osteoporosis in older adults warrant investigation for underlying causes, including coeliac disease.
Getting Diagnosed
If you or your GP suspects coeliac disease, the diagnostic process is straightforward:
- Blood test: The first step is a blood test for tissue transglutaminase antibodies (tTG-IgA). This is a reliable screening test and is available through your GP.
- Endoscopy and biopsy: If the blood test is positive, you will be referred for a gastroscopy, where small samples of your intestinal lining are taken to confirm the diagnosis.
Crucially, you must continue eating gluten before and during testing. If you remove gluten from your diet before being tested, the results may come back falsely negative. This is one of the most common mistakes, and it can delay diagnosis by months or even years.
Under the HSE’s Chronic Disease Management (CDM) Programme, your GP can coordinate much of this care, including referrals and ongoing monitoring, at no extra charge if you have a medical card or GP visit card.
Treatment: The Gluten-Free Diet
There is currently no medication for coeliac disease. The only treatment is a strict, lifelong gluten-free diet. This means completely eliminating wheat, barley, and rye from your diet — including hidden sources in sauces, processed foods, medications, and even some supplements.
The good news? The gut can heal remarkably well, even when diagnosis comes later in life. Most people notice an improvement in symptoms within weeks of going gluten-free, though full intestinal healing can take 12 to 24 months in older adults.
Practical Tips for Going Gluten-Free After 50
- See a dietitian: Ask your GP to refer you to an INDI-registered dietitian who specialises in coeliac disease. They can help you plan balanced meals and identify hidden sources of gluten. Many HSE Community Dietitian services accept referrals for newly diagnosed coeliac patients.
- Read every label: EU food labelling law requires that gluten-containing ingredients are highlighted in bold on packaging. Look for the crossed grain symbol on certified gluten-free products.
- Watch for cross-contamination: If you share a kitchen, use separate toasters, chopping boards, and butter dishes. Even small amounts of gluten can cause damage.
- Stock your cupboard: Naturally gluten-free foods include rice, potatoes, oats (certified gluten-free), quinoa, meat, fish, eggs, fruit, vegetables, and dairy. Building meals around these makes things simpler.
- Eating out: Many Irish restaurants now offer gluten-free options and are trained in allergen awareness under the EU Food Information for Consumers Regulation. Do not be afraid to ask questions — your health depends on it.
Monitoring Your Health After Diagnosis
Once diagnosed, your GP and specialist team should arrange regular follow-up, typically including:
- Annual blood tests — tTG-IgA levels to check dietary compliance and gut healing, plus full blood count, iron, vitamin D, calcium, folate, and B12
- Bone density scan (DEXA) — particularly important if you were diagnosed after 50, as untreated coeliac disease significantly increases the risk of osteoporosis
- Thyroid function tests — coeliac disease is associated with other autoimmune conditions, including thyroid disease, which is common in older adults
- Dietary review — an annual check-in with a dietitian ensures you are maintaining nutritional adequacy on a gluten-free diet
Under the CDM Programme, structured reviews with your GP are covered for patients with chronic conditions, making ongoing management more accessible.
The Nutritional Challenges of Going Gluten-Free After 50
Removing gluten from your diet can sometimes mean missing out on nutrients that are commonly found in fortified wheat products, such as B vitamins, iron, and fibre. This is particularly important for older adults who may already be at risk of nutritional deficiencies.
Key nutrients to focus on include:
- Calcium and vitamin D — essential for bone health, especially given the osteoporosis risk. The HSE recommends vitamin D supplementation for all adults over 65 in Ireland.
- Iron and B12 — monitor regularly, particularly in the first year after diagnosis
- Fibre — many gluten-free products are lower in fibre. Compensate with fruit, vegetables, legumes, and certified gluten-free oats.
Support and Resources in Ireland
You are not alone in navigating this diagnosis. Ireland has excellent support networks for people with coeliac disease:
- The Coeliac Society of Ireland (coeliac.ie) — Ireland’s dedicated coeliac organisation, offering a food list, dining guide, local support groups, and a helpline. Membership gives you access to their regularly updated directory of gluten-free products available in Irish shops.
- HSE CDM Programme — your GP can provide structured chronic disease management reviews, including coordinating blood tests and specialist referrals
- INDI (Irish Nutrition and Dietetic Institute) — to find a registered dietitian near you
- Active Retirement Ireland — many local groups are aware of dietary needs for social events and meals
At Críonna Health, we believe that a new diagnosis at any age is an opportunity to take charge of your health. Coeliac disease, once identified, is one of the most manageable autoimmune conditions — and with the right support, you can continue to eat well, feel well, and live fully.
When to Talk to Your GP
If you have been experiencing any of the following, it is worth asking your GP about coeliac screening:
- Persistent or unexplained fatigue
- Iron-deficiency anaemia that is not improving with supplements
- Unexpected bone density loss (osteoporosis or osteopenia)
- Ongoing digestive symptoms — bloating, diarrhoea, or discomfort
- A family history of coeliac disease (first-degree relatives have a 1 in 10 chance)
- Another autoimmune condition, such as type 1 diabetes or thyroid disease
A simple blood test is all it takes to start the conversation. And if you are over 50, remember — it is never too late for a diagnosis to change your life for the better.
📷 Photo by Margarita Zueva (@margzu) on Unsplash
