Coeliac disease living in older adults

Overview

Coeliac disease is a condition where your immune system reacts badly to a protein called gluten, which is found in wheat, barley, and rye. This reaction damages the lining of your small intestine and stops it from absorbing nutrients properly. For older adults, coeliac disease can sometimes be harder to spot because the symptoms might be mistaken for other age-related problems.

Coeliac disease is fairly common, affecting about 1 in 100 people worldwide. However, many people — especially older adults — may have it without knowing, because symptoms can be mild or mistaken for other conditions.

Coeliac disease can affect anyone at any age. It is more common in people who have a family history of the condition, and it is also linked to other autoimmune disorders such as type 1 diabetes. Older adults may develop symptoms for the first time later in life, even if they have eaten gluten safely for years.

Symptoms

Common symptoms

• Diarrhoea or constipation
• Feeling very tired all the time (fatigue)
• Bloating and tummy pain
• Unexpected weight loss
• Anaemia (low iron, causing tiredness and pale skin)

Symptoms in children

• Failure to grow at the expected rate
• Chronic diarrhoea or foul-smelling stools
• Delayed puberty
• Irritability and poor concentration

Symptoms in older adults

• Bone pain or frequent fractures (due to weak bones from poor calcium absorption)
• Vitamin deficiencies (especially B12, folate, vitamin D) leading to nerve problems or mouth ulcers
• Unexplained fatigue and weakness
• Mood changes, such as depression or anxiety
• Rash (dermatitis herpetiformis – an itchy, blistering skin rash on elbows, knees, or buttocks)

Causes

Main causes

• Coeliac disease is caused by a combination of genetic and environmental factors. You need to have certain genes (HLA-DQ2 or HLA-DQ8) to develop it, but not everyone with these genes gets the condition.
• Eating gluten triggers the immune system to attack the lining of the small intestine, leading to damage over time.

Risk factors

• Having a close family member (parent, sibling, child) with coeliac disease
• Having another autoimmune condition such as type 1 diabetes, autoimmune thyroid disease, or Addison's disease
• Having certain genetic syndromes like Down syndrome or Turner syndrome
• In older adults, a history of gastrointestinal infections or surgeries may increase risk, but this is not fully understood.

When to see a doctor

See a doctor urgently if:

• If you have severe abdominal pain that does not settle
• If you are passing blood or black stools
• If you feel very weak, dizzy, or have fainted – this could be a sign of severe anaemia

Book a routine appointment if:

• If you have ongoing digestive problems like diarrhoea, bloating, or tummy pain that last for more than a few weeks
• If you feel unusually tired or have unexplained weight loss
• If you have bone pain or fractures without a clear cause
• If you have a persistent itchy rash on your elbows, knees, or buttocks

Diagnosis

Coeliac disease is diagnosed with blood tests and a biopsy (a small sample of tissue) of your small intestine. It is very important that you keep eating gluten (for example, at least one piece of bread per day for six weeks) before these tests, otherwise the results may be wrong.

Tests that may be done

• Blood test: looks for antibodies (proteins the body makes) that are high when you have coeliac disease.
• Endoscopy and biopsy: a thin tube with a camera is passed through your mouth into your small intestine while you are sedated. The doctor takes tiny samples to check for damage.

What to expect at your appointment

The tests are usually done in a clinic or hospital. The blood test is quick and simple. The endoscopy takes about 15–30 minutes, and you will be given medication to help you relax. Most people go home the same day. Your doctor will explain the results and what they mean for you.

Treatment

The main treatment for coeliac disease is a strict, lifelong gluten-free diet. This allows your intestine to heal and prevents further damage. Once you remove gluten, most people start to feel better within weeks, though full healing can take months or even up to a year in older adults.

Self-care at home

• Learn to read food labels carefully – gluten is hidden in many processed foods, sauces, and even some medications.
• Avoid cross-contamination: use separate toasters, chopping boards, and cooking utensils for gluten-free foods.
• Build a support network: join a local or online support group for coeliac disease.
• Speak with a dietitian who specialises in coeliac disease to help you plan nutritious, gluten-free meals.

Medical treatments

Your doctor may recommend supplements (such as iron, calcium, vitamin D, or B vitamins) to correct any deficiencies. They might also refer you to a dietitian for personalised advice. In some cases, if symptoms are severe or diet is not enough, your doctor might prescribe medications that help manage symptoms, but these are not a cure. Always follow your doctor's guidance – never take supplements or medications without checking they are gluten-free.

When is surgery considered?

Surgery is not needed for coeliac disease. Very rarely, if complications such as a blockage or perforation of the bowel occur, surgery may be required, but this is extremely uncommon and would be managed by a specialist.

Living with this condition

Living with coeliac disease as an older adult means being careful about everything you eat. But with planning, it is very manageable. You will need to check ingredient lists, ask about food when eating out, and bring your own food to parties or events if needed. Many supermarkets have clear gluten-free sections.

Lifestyle tips

• Carry gluten-free snacks with you when you are out, in case there is nothing safe to eat.
• Inform family and friends about your diet so they can support you.
• Consider carrying a food allergy card or chef card that explains coeliac disease when eating out.
• Keep a food diary to track how you feel and identify any accidental gluten exposure.

Diet and exercise

A gluten-free diet can be healthy and balanced. Focus on naturally gluten-free foods like fruits, vegetables, meat, fish, eggs, rice, potatoes, and gluten-free oats. Include foods rich in calcium (such as dairy or fortified alternatives) and vitamin D. Regular exercise, such as walking or gentle strength training, helps maintain bone density and overall health. Your doctor or dietitian can give you personalised advice.

Mental health and emotional wellbeing

Adjusting to a new diet can be frustrating and isolating. Some older adults feel anxious about eating out or worry about accidental gluten. It is normal to feel down at times. If you feel very sad, anxious, or overwhelmed, talk to your doctor or a counsellor. Remember, you are not alone – many people successfully manage coeliac disease and live full lives. In a crisis, please reach out to a mental health helpline or your local emergency services.

Prevention

There is no known way to prevent coeliac disease because it is largely genetic. Eating gluten does not cause the disease; it only triggers it in people who are genetically susceptible. Avoiding gluten before developing the disease does not prevent it from starting.

Screening programmes

Screening (testing people without symptoms) for coeliac disease is not recommended for the general public. However, if you have a close family member with coeliac disease, or another autoimmune condition, talk to your doctor about whether testing might be a good idea.

Complications

If left untreated

• Osteoporosis (weak, brittle bones) due to poor absorption of calcium and vitamin D
• Anaemia (low iron), which can cause severe tiredness and shortness of breath
• Vitamin deficiencies that can lead to nerve damage (tingling, numbness, or trouble walking)
• Increased risk of certain types of cancer, especially lymphoma of the small intestine, though this is rare and the risk decreases with a gluten-free diet
• Infertility or miscarriage in younger women, though this also improves with treatment

Long-term outlook

The outlook for people with coeliac disease is very good when they follow a strict gluten-free diet. The intestine heals, symptoms improve, and the risk of complications drops greatly. Although it takes effort, most people adapt well and live full, healthy lives. It is never too late to start – even if you are diagnosed later in life, your body will benefit from removing gluten.

Find support

International organisations

• Coeliac UK ↗
• Beyond Celiac ↗

Local organisations

• NHS (National Health Service) – coeliac disease information ↗ · United Kingdom

External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.