Gluten sensitivity – that is, symptoms linked to gluten consumption – is affecting an increasing number of people, and there are many misconceptions surrounding the topic. Many people start a gluten-free diet based on a self-diagnosis, whilst others are unsure whether their symptoms are actually caused by gluten. In this article, we set the record straight: from an expert’s perspective and based on scientific facts, we cover everything worth knowing about gluten sensitivity, thereby helping you find the right path.
Gluten is a protein complex found in wheat and other cereals (barley, rye) that gives dough its elasticity and stretchiness. Whilst consumption does not cause problems for most people, it can trigger digestive and other symptoms in certain individuals. It is important to understand that „gluten sensitivity” is an umbrella term that encompasses several conditions with different underlying mechanisms.
An accurate diagnosis of these conditions is essential, as their treatment and long-term consequences vary. An inappropriate diet or a misdiagnosis can not only lead to unnecessary restrictions, but may also mask other, more serious conditions, delaying their proper treatment. The Endomedix Gastroenterology Centre Its specialists are committed to providing accurate diagnoses and personalised treatment so that patients can regain their well-being and quality of life.
Conditions associated with gluten: Not all cases of gluten sensitivity!
When someone experiences unpleasant symptoms after consuming gluten, three main conditions may arise, which must be distinguished from one another. These are coeliac disease, wheat allergy and non-coeliac gluten sensitivity.
Coeliac disease (celiac disease)
Coeliac disease is an autoimmune disorder that develops in genetically susceptible individuals in response to gluten. Consuming gluten triggers an abnormal immune response in the body, leading to damage to the lining of the small intestine and the destruction of the villi. This damage causes malabsorption, meaning the body is unable to absorb essential nutrients.
- Symptoms: The symptoms of coeliac disease can vary enormously. In childhood, diarrhoea, abdominal bloating, delayed growth and iron-deficiency anaemia are common. In adulthood, alongside the classic digestive complaints (diarrhoea, abdominal pain, bloating), extraintestinal symptoms are also common, such as chronic fatigue, osteoporosis, reproductive disorders, mouth ulcers or a itchy skin rash known as dermatitis herpetiformis.
- Diagnosis: Making a diagnosis is a complex process. First, a blood test is carried out to check for the presence of specific autoantibodies (tissue transglutaminase – tTG, endomysium – EMA). It is important that the patient does not follow a gluten-free diet prior to the blood test, as this may result in a false-negative result. If the serological test is positive, the diagnosis is confirmed by a small bowel biopsy taken during a gastroscopy, which reveals damage to the intestinal villi. In certain cases, genetic testing (HLA-DQ2/DQ8) may also be helpful, as the absence of these genes almost completely rules out the possibility of coeliac disease.
- Treatment: The only effective treatment for coeliac disease is a strict, lifelong gluten-free diet. This not only alleviates symptoms, but also allows the intestinal lining to heal and prevents the development of serious complications, such as small bowel lymphoma.
Wheat allergy
A wheat allergy is a classic food allergy in which the immune system produces IgE-type antibodies against one of the proteins in wheat (not exclusively gluten). Symptoms usually appear minutes or hours after consuming wheat.
- Symptoms: The range of symptoms is wide: from bloating, diarrhoea and abdominal cramps to skin rashes (hives), swelling of the lips and tongue, right through to severe, life-threatening anaphylactic shock.
- Diagnosis: The diagnosis is made using allergological tests, such as a skin test (prick test) or the detection of specific IgE antibodies in the blood.
- Treatment: Treatment involves completely avoiding wheat and foods containing wheat. It is important to note that, unlike people with coeliac disease, those with a wheat allergy do not need to avoid other gluten-containing grains (such as rye and barley).
Non-coeliac gluten sensitivity (NCGS)
This is the least well-understood and most controversial category. NCGS is a condition in which, following the consumption of foods containing gluten, the patient experiences symptoms reminiscent of both coeliac disease and IBS (irritable bowel syndrome), however, coeliac disease and wheat allergy can be definitively ruled out in such patients.
- Symptoms: Symptoms usually occur hours or days after consuming gluten. Typical symptoms include abdominal pain, bloating, diarrhoea or constipation, but non-gastrointestinal symptoms are also common, such as headaches, migraines, chronic fatigue, „brain fog” (difficulty concentrating), and joint and muscle pain.
- Diagnosis: The diagnosis of NCGS is a process of elimination. There is no specific biomarker or test to detect it. A diagnosis can be made if the patient’s symptoms improve in response to a gluten-free diet and then worsen again when gluten is reintroduced, whilst coeliac disease and wheat allergy have already been ruled out by appropriate tests. This process must always be carried out under medical supervision.
- Treatment: Treatment involves a gluten-free diet, although in many cases it does not need to be as strict as in the case of coeliac disease. The extent and duration of the diet should be determined on an individual basis, with the help of a gastroenterologist and a dietitian.
Common misconceptions about gluten sensitivity
- Myth: „A gluten-free diet is healthier for everyone.”
Fact: There is no scientific evidence to suggest that a gluten-free diet is healthier for people who do not have coeliac disease, a wheat allergy or NCGS. In fact, gluten-free products often contain less fibre, vitamins and minerals, whilst containing more sugar and fat to achieve the right texture. An unwarranted diet can lead to nutrient deficiencies and unnecessary costs.
- Misconception: „If bread makes me feel bloated, I must be gluten-intolerant.”
Fact: There can be a number of causes behind bloating and abdominal discomfort. The symptoms of irritable bowel syndrome (IBS), for example, can be very similar. In such cases, it is not necessarily gluten but other components found in cereals, known as FODMAPs (fermentable oligo-, di- and monosaccharides and polyols), that cause the symptoms. The FODMAP diet can be effective for IBS. In addition, lactose intolerance, fructose malabsorption or other food intolerances can also cause similar symptoms.
- Myth: „A home test is enough to detect gluten sensitivity.”
Fact: The reliability of rapid tests available online and in pharmacies is extremely low. They are no substitute for a specialist medical examination. A detailed medical history, a physical examination, specific blood tests and, where necessary, a gastroscopy are essential for diagnosis. Self-diagnosis is dangerous, as serious illnesses may remain undetected.
- Myth: „I can start a gluten-free diet at any time if I suspect I might have an intolerance.”
Fact: This is one of the most common and dangerous mistakes. The antibodies required to diagnose coeliac disease and the damage to the villi can only be detected if the patient regularly consumes gluten. If someone starts a gluten-free diet before the test, the results may be false negatives, which makes it difficult or even impossible to reach the correct diagnosis. The test is always the first step!
- Myth: „NCGS is just a made-up, trendy illness.”
Fact: Although the mechanism underlying NCGS is not yet fully understood, it is increasingly recognised by the scientific community as a genuine clinical condition. Numerous double-blind, placebo-controlled trials have confirmed that, in certain individuals, gluten does indeed trigger symptoms, even if they do not have coeliac disease or a wheat allergy. The exact causes are currently the subject of intensive research.
The right approach: What should you do about your symptoms?
If you suspect that your symptoms are caused by gluten, the most important thing is not to start a diet or experiment on your own. The first and most important step is to consult a specialist gastroenterologist.
From Endomedix Gastroenterology Centre Their specialists help to pinpoint the exact cause of the symptoms. During the examination:
- A detailed medical history is taken, by asking about symptoms, family medical history and eating habits.
- Laboratory tests are ordered to detect antibodies specific to coeliac disease and any nutrient deficiencies (e.g. iron deficiency), and to rule out a wheat allergy.
- If necessary, a gastroscopy is carried out, during which a sample is taken from the small intestine for histological examination of the condition of the villi. This is the gold standard for the diagnosis of coeliac disease.
- Other possible causes are ruled out, such as IBS, lactose intolerance or other digestive disorders.
Only with an accurate diagnosis can effective and safe treatment be recommended, whether that be a strict gluten-free diet for coeliac disease or a less restrictive diet for NCGS. Don’t let misconceptions or uncertainty dictate your health! A professional medical assessment is the only reliable path to a symptom-free life.
Summary and next steps
Gluten-related symptoms present a complex set of issues, in which coeliac disease, wheat allergy and non-coeliac gluten sensitivity must be carefully distinguished from one another. Incorrect self-diagnosis and an unwarranted gluten-free diet are not only unnecessary but may even be harmful, and can make it more difficult to identify the actual causes.
If you are experiencing digestive or other symptoms linked to gluten consumption, take the first and most important step: seek help from a specialist. The Endomedix Gastroenterology Centre Our highly trained team, equipped with modern diagnostic tools and up-to-date expertise, is on hand to provide an accurate diagnosis and find a personalised solution to your problem.
Don’t let your doubts hold you back any longer! Book an appointment for a consultation today and set out on the path to greater well-being and freedom from symptoms, guided by our experts.
