Irritable bowel syndrome (IBS) is a functional bowel disorder characterised by abdominal pain, bloating, cramps and changes in bowel habits – diarrhoea, constipation or a combination of the two. No detectable organic lesions are found at the time of diagnosis, yet the symptoms significantly impair patients’ quality of life. IBS affects 10–20% of the population and is more common among women. Although the exact cause of the condition is not fully understood, the factors involved in its development are complex, including genetic predisposition, disruption of communication along the gut-brain axis, abnormalities in intestinal motility and an imbalance in the gut microbiota.
As IBS is a chronic condition characterised by fluctuating symptoms, prevention is key to prolonging symptom-free periods and avoiding flare-ups. This article provides a detailed guide to practical advice on preventing IBS, including dietary changes, lifestyle factors and stress management techniques that can help control symptoms. It is important to emphasise that consultation with a specialist, such as a Endomedix Gastroenterology Centre specialists.
Possible risk factors for the development of IBS
To understand the prevention strategies for IBS, it is important to review the factors that may contribute to the development of the condition or the worsening of symptoms. Although no single specific cause can be identified, research has highlighted several areas.
- Genetic and epigenetic factors: The fact that IBS runs in families suggests that genetic predisposition may also play a role in its development.
- Communication disorder in the gut-brain axis: A disruption in the two-way communication between the gut and the brain can lead to increased sensitivity to pain (visceral hyperalgesia) and abnormalities in bowel movements.
- Intestinal motility disorders: Bowel movements can be too rapid (causing diarrhoea) or too slow (leading to constipation).
- Inflammatory processes: Although IBS is not an inflammatory bowel disease (IBD), low-grade, chronic inflammation can be detected in the intestinal mucosa in some patients.
- Changes to the gut flora (microbiome): Changes in the composition and balance of beneficial bacteria in the gut (dysbiosis) may contribute to the symptoms. Bacteria overgrowing in the small intestine (SIBO) can also cause IBS-like symptoms, such as bloating, abdominal pain and diarrhoea. The prevalence of SIBO among patients with IBS can range from 30 to 85%.
- Infections (post-infectious IBS): Following a gastrointestinal infection (gastroenteritis), some patients may continue to experience symptoms of IBS.
- Psychosocial factors: Chronic stress, anxiety, depression and past negative life events are closely linked to the onset and worsening of IBS symptoms.
Dietary advice for preventing IBS
Diet plays a key role in the management of IBS and in preventing symptoms. As individual sensitivities vary, it is most important to develop a personalised diet, for which it is advisable to seek the help of a dietitian or gastroenterologist.
Adjusting fibre intake
The effect of fibre may vary depending on the type of IBS. It is important to distinguish between soluble and insoluble fibre.
- Soluble fibres: These fibres absorb water, forming a gel-like substance which helps to normalise stool consistency. They can be beneficial in cases of both diarrhoea and constipation. They should be introduced gradually, starting with a low dose (3–4 grams a day), to avoid bloating.
- Good sources: Oats, barley, psyllium (plantain husks), apples, carrots, citrus fruits.
- Insoluble fibres: These fibres increase the bulk of the stool and speed up bowel movements. Although they may help with constipation, in many people with IBS they can make bloating and abdominal pain worse.
- Sources to be avoided may include: Wheat bran, wholemeal cereal products, nuts, cauliflower, green beans.
Low-FODMAP diet
FODMAP is an acronym that stands for fermentable oligo-, di- and monosaccharides and polyols. These are short-chain carbohydrates that the small intestine finds difficult to digest, or cannot digest at all. Once they reach the large intestine, they are fermented by gut bacteria, which can lead to gas, bloating, abdominal pain and diarrhoea.
The low-FODMAP diet is a diagnostic diet which is generally recommended to be followed for 4–8 weeks under the supervision of a healthcare professional. Its aim is to eliminate foods high in FODMAPs and, if symptoms improve, to gradually reintroduce them one at a time to determine individual tolerance. This is not a lifelong diet.
Foods high in FODMAPs (examples):
- Fructose (fruit sugar): Apples, pears, mangoes, cherries, honey, high-fructose maize syrup.
- Lactose (milk sugar): Milk, yoghurt, soft cheeses.
- Fructans: Wheat, rye, onions, garlic, artichokes.
- Galactans: Pulses (beans, lentils, chickpeas).
- Polyols (sugar alcohols): Plums, apricots, cauliflower, mushrooms, and artificial sweeteners (sorbitol, mannitol, xylitol).
Considering a gluten-free diet
Although ruling out coeliac disease (gluten sensitivity) is essential, some patients with IBS may experience an improvement in their symptoms following a gluten-free diet, even if they do not have coeliac disease. This is known as non-coeliac gluten sensitivity (NCGS). The reason for this improvement may be that cereals containing gluten (e.g. wheat) are also high in fructans, which are a type of FODMAP. In general, a gluten-free diet is not recommended for all IBS patients, only where clinically indicated.
Other dietary recommendations
- Regular meals: Eat smaller portions, but more frequently (4–5 times a day). Don’t skip meals.
- Eat slowly: Take your time when eating, and chew your food thoroughly to aid digestion.
- Avoiding fatty, spicy foods: Foods that are high in fat and heavily spiced can make symptoms worse.
- Fluid consumption: Make sure you drink enough fluids, particularly water (at least 1.5–2 litres a day). Avoid fizzy, sugary soft drinks.
- Caffeine and alcohol: These substances can irritate the digestive system, so it is advisable to limit or avoid consuming them.
Lifestyle changes and stress management
There is a close link between the symptoms of IBS and stress. Stress management and regular exercise are essential for prevention.
Regular physical activity
Physical activity stimulates bowel movements, reduces stress and improves general well-being. Regular, moderate-intensity exercise, such as walking, jogging, swimming or yoga, is particularly recommended for the constipation-predominant (IBS-C) type. The aim is to achieve at least 150 minutes of moderate-intensity physical activity per week.
Stress management techniques
Reducing stress is key to restoring the harmonious functioning of the gut-brain axis.
- Mindfulness and meditation: Mindfulness-based stress reduction (MBSR) has been shown to alleviate the symptoms of IBS, reduce pain and improve quality of life.
- Yoga and tai chi: These forms of exercise combine physical activity with relaxation and breathing exercises.
- Cognitive behavioural therapy (CBT): This psychotherapeutic approach helps to identify and change the negative thought patterns and behaviours that contribute to the worsening of symptoms.
- Gut-specific hypnotherapy: A relaxation technique led by a specially trained therapist, designed to influence bowel function, which has been shown to be effective in alleviating the symptoms of IBS.
- Adequate sleep: Seven to eight hours of restful sleep a day is essential for the body to recover and to reduce stress levels.
When should we see a doctor?
Although IBS is not a life-threatening condition, the symptoms can significantly impair quality of life, and it is important to rule out other, more serious conditions. Consult a gastroenterologist if your symptoms are new, persistent, or if you experience any of the following „warning signs”:
- Symptoms beginning in people aged 50 and over
- Significant, unintentional weight loss
- Diarrhoea or pain occurring at night that wakes you from sleep
- Blood in the stool
- Iron deficiency anaemia
- A family history of inflammatory bowel disease (IBD) or bowel cancer
- A palpable abdominal mass
In order to make an accurate diagnosis, the doctor will take a detailed medical history, carry out a physical examination and, if necessary, may recommend further tests (blood tests, stool tests, breath tests, endoscopic examination). The Endomedix Gastroenterology Centre With modern diagnostic equipment and experienced specialists, we are able to provide an accurate diagnosis and draw up a personalised treatment plan.
Summary: The path to prevention
Preventing irritable bowel syndrome requires a complex, personalised approach based on the three pillars of diet, lifestyle and stress management. There is no single solution that works for everyone, so the key is self-monitoring and paying attention to your body’s signals. Keeping a symptom diary can help you identify trigger foods and situations.
The most important steps in prevention are as follows:
- A personalised diet: The gradual introduction of soluble fibre and the avoidance of foods that cause individual intolerance, such as those high in FODMAPs.
- Regular physical activity: Physical activity helps to regulate bowel function and relieve stress.
- Effective stress management: Relaxation techniques, psychotherapy and adequate sleep are essential for maintaining the balance of the gut-brain axis.
- Specialist consultation: Cooperation with a gastroenterologist is essential to ensure an accurate diagnosis and appropriate treatment.
IBS is a chronic condition that can be managed effectively with patience and a healthy lifestyle. By consistently following preventive strategies, it is possible to achieve long-term remission and a better quality of life.
