12 signs you might need to go gluten free

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Do you need to go gluten free? The 12 little-known signs – including depression and nausea – that signal you might have coeliac disease

  • Approximately one per cent of people in the UK may have the condition
  • Less obvious symptoms include depression, miscarriages and tooth loss
  • This year’s Coeliac Awareness Week runs from 14 – 20 May 

For this year’s Coeliac Awareness Week which runs from the 14th to the 20th of May, an expert has revealed the twelve signs and symptoms of the disease which should never be ignored.

Head to Instagram and you’ll find over 14 million #glutenfree posts.

This is no surprise when you realise that over 500,000 people in the UK alone are believed to suffer from coeliac disease without knowing it.

Coeliac disease is an autoimmune condition which means your body decides that healthy cells are foreign and so it sends antibodies out to ‘protect’ your body.

When someone has coeliac disease their body triggers an immune response to gluten entering their systems. 

During this process, antibodies are released that damage the lining of their gut and can cause a number of unpleasant symptoms, which aren’t all tummy-related.

The problem with coeliac disease, director of Coeliac UK, Norma McGough, tells Healthista, is that it often goes undiagnosed or misdiagnosed.

Coeliac disease is an autoimmune condition which causes the body to trigger an immune response to gluten when it is eaten, which damages the lining of the small intestine

Ms McGough explains: ‘It’s a common disease with a prevalence of about one in 100 in the UK but we’ve only got one-quarter of those people currently medically diagnosed.’ 

This means that there are still around half a million people in the UK who have coeliac disease but don’t know it.

So what does having this condition mean? According to McGough, coeliac disease can be hugely detrimental if left untreated.

‘It can result in children missing school, adults missing work and having days off for various reason,’ she says.

‘There are links with depression and I think in terms of your ongoing health, coeliac disease can have a big impact on an individual’s life.’

But it’s not all bad. Unlike other autoimmune diseases, there is a simple treatment for coeliac disease that works – sticking to a gluten-free diet. 

‘Symptoms can be reversed by identifying what the problem is and treating it properly by cutting gluten entirely from the diet.’ 

Coeliac disease is a problem that affects the gut and so we often associate the condition with gastrointestinal symptoms. 

However, the range of symptoms that coeliac disease is thought to cause is hugely varied. 

Here are some of the signs and symptoms to look out for:

1. Gastrointestinal problems 

‘Symptoms are very often gut-related,’ said McGough. ‘Nausea, diarrhoea, stomach pains and even constipation.’ 

While these are the symptoms that most people associate with the condition, they often go misdiagnosed as IBS. 

Research has shown that 11 per cent of the population globally has IBS but this diagnosis can lead coeliacs to live untreated and as such their symptoms will not disappear.

McGough revealed that one in four of those diagnosed with coeliac disease had been previously wrongly diagnosed with IBS.

2. Mouth ulcers 

Mouth ulcers can be a symptom of coeliac disease because they indicate the immune system is run down more generally

While this is a symptom that might not spring to mind when we think of gut problems, mouth ulcers are a common symptom of coeliac disease. 

In fact, they’re a common symptom of autoimmune problems such as coeliac disease because they indicate a generally rundown system.

The dietician revealed that this is a symptom to be particularly aware of, especially if they’re serious. 

‘I’m talking about mouth ulcers that have a particularly detrimental impact because the whole mouth is covered. 

‘They’re particularly large and sore and its an ongoing problem for coeliac undiagnosed, not just the odd mouth ulcer.’

3. Tiredness 

‘One of the problems with the under-diagnosis of coeliac disease is many of the symptoms are what you might class as every day and can be associated with other things.’ 

Tiredness is one example of this. 

Extreme fatigue can be a result of the other symptoms such as when your body isn’t getting the right nutrients because of the reaction its having to gluten.

If you find that you have extreme tiredness, Coeliac UK recommends you contact your GP so that they can test your blood and whether gluten is causing these issues.


Coeliac disease is a genetic autoimmune disorder where the ingestion of gluten leads to damage in the small intestine.

These attacks damage the villi, small finger-like projections that line the small intestine that promote nutrient absorption.

It is estimated to affect one in 100 people worldwide. 

One percent – or three million Americans – are living with coeliac disease.

There are more than 200 symptoms of coeliac disease but the more common ones are:

  • Abdominal bloating and pain
  • Chronic diarrhea
  • Vomiting
  • Constipation
  • Pale, foul-smelling, or fatty stool
  • Weight loss
  • Fatigue 

The only treatment for the disease and is a strict gluten-free diet. 

Only foods and beverages with a gluten content less than 20 parts per million are allowed.

 Source: Celiac Disease Foundation

4. Skin rashes 

Or more specifically dermatitis herpetiformis, often referred to as ‘DH’, a skin condition linked to coeliac disease. 

‘It’s an auto immune condition and causes tiny little blisters to develop. They occur mostly on the elbows and knees but can be anywhere,’ says McGough.

Both itchy and stinging at the same time DH responds to a gluten-free diet often by clearing up.

Diagnosis of DH is confirmed by a simple skin biopsy test and if you’re found positive you’ll be referred to a gut specialist.

5. Anaemia and vitamin B deficiencies 

Coeliac disease damages the lining of your gut which can mean your body doesn’t properly absorb the vitamins and nutrients that it needs from the foods you eat.

Anaemia can occur when your body doesn’t absorb the right amount of iron in particular, which can lead to anaemia. 

But while not everyone with anaemia will have coeliac disease, it can often be a key giveaway as can deficiencies in B vitamins. 

While you would have to have a blood test to know whether or not you’re anaemic, signs to look out for are tiredness, shortness of breath, paleness and a tingling along with a crawling feeling in the legs. 

McGough says: ‘Nutritional deficiencies such as in iron and vitamin B are due to gut damage which then results in malabsorption of nutrients from the food you eat.’

6. Poor coordination and balance 

Neurological problems such as a condition called ataxia are another surprising symptom that your body simply can’t do gluten. 

According to the NHS, ataxia is a term for a group of disorders that affect coordination, balance and speech and can result in problems with balance and walking, vision and even speaking and swallowing.

‘It’s an interesting area because neurological problems associated with coeliac disease highlight the wide range of manifestations and symptoms that can be triggered by gluten,’ said McGough.

While of course not all neurological problems can be treated with a gluten-free diet, ‘there is some evidence and work ongoing at the moment which shows that some individuals with problems like ataxia can be treated with a gluten-free diet if the problem is caught early enough. This is known as gluten ataxia.’

7. Weak bones and osteoporosis 

Osteoporosis is a condition that weakens bones making them fragile and more likely to break.

It’s a common condition that according to the NHS affects over three million people in the UK and more than 500,000 people in this country receive hospital treatment for fragility fractures.

While for many people osteoporosis is not related to coeliac disease it can be a long-term complication of the disease if it goes untreate.

‘Once established on the gluten free diet and sticking strictly to it, that can make a huge difference to bone health and bone density,’ McGough asserts.

8. Depression 

According to coeliac UK depression is another symptom of coeliac disease that it could be important not to ignore. 

Experts are still uncertain about the exact relation of depression and the autoimmune disease.

McGough said: ‘If you’re unwell physically but you can’t put your finger on exactly what’s wrong and you’ve been back and forth to the doctor and they haven’t either then there is a potential for you to be feeling depressed.’

But while there are many individual studies highlighting the risk of depression for coeliacs, McGough asserted that there is still a lot of work to be done.

9. Multiple miscarriages 

This is a symptom that might shock some people, and again McGough states that we are still not fully sure of the reasons for this association.

‘It’s certainly something that there should be awareness of,’ said McGough.

‘In the case of repeated miscarriages and problems with infertility that have been checked out then certainly it’s worth screening for coeliac disease.’

‘There are studies that indicate that in undiagnosed, untreated coeliac disease there is this link with infertility problems.

‘Therefore it’s certainly prudent to do a blood test for coeliac disease.’

10. Sudden weight loss 

If you lose weight suddenly and without explanation it could be because coeliac disease is preventing you from properly absorbing nutrients from your diet

You might wonder how sudden weight loss can occur from a life-long condition but McGough explained that much like some of the other symptoms this is related to the autoimmune nature of this condition.

While the disease can be triggered in childhood, certain symptoms may not manifest until adulthood. 

‘We used to think this was a disease of childhood and we didn’t realise that people were going through their lives with undiagnosed coeliac disease.

‘Today the peak diagnosis age is around 50.’

‘It’s possible that if you have undiagnosed coeliac disease and feel particularly stressed or had some other unrelated illness it might weaken your immune system and then exacerbate the symptoms.’ 

‘This could result in more malabsorption of nutrients in your gut and result in unexpected weight loss.‘

11. Hair loss 

Autoimmune diseases can result in the loss of hair. 

‘In undiagnosed coeliac, disease alopecia [the medical term for hair loss] might be something that occurs but it may just be patchy hair loss as opposed to significant loss.’

While it isn’t a symptom that is as typical as gut problems, mouth ulcers, anaemia and tiredness it is listed as something to be aware of on Coeliac UK’s website.

12. Tooth loss 

Again this symptom is a little rarer than most and is typically identified in children. 

‘Tooth damage from undiagnosed coeliac disease a particular sort of discolouration and grooving of the enamel.‘ 

And while you might not be able to easily notice it in yourself it is something that your dentist would be able to identify.

‘Coeliac UK has had links trying to raise awareness of coeliac disease to health care professionals in order to try to address this,’ said McGough.

What do I do if I think I have coeliac disease? 

‘The most important piece of advice I can give you is not to change your diet and see if it makes a difference,’ McGough says. 

‘You should go to your GP or doctor and have a test. If you stop eating gluten and then go and have a test the results can come back false.

‘The screening test is the first step on the journey to diagnosis and you have to be on the gluten-containing diet when you have that test because otherwise, it’s a complete waste of time.’ 

Then to confirm your diagnosis you will be referred for an endoscopy which will determine whether or not you have the disease.

‘The gluten damages the lining of the gut and starts to cause the symptoms of coeliac disease.

‘When you have an endoscopy a tiny, tiny piece of the lining of the gut will be sampled and that can be analysed and the appearance of that can confirm diagnosis of coeliac disease.’

Coeliac UK has created a quiz that you can take to see if you might have coeliac disease. Click here to take the quiz.

This article originally appeared on Healthista and has been reproduced with their permission.

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