Experts Revise Guidelines For Irritable Bowel Syndrome

Overview

Irritable bowel syndrome, usually called IBS, is a common, long-lasting condition that affects how your gut (your bowels) works. It causes tummy pain, bloating and changes in how often or how easily you poo. IBS is a 'functional' problem, which means the gut looks normal but does not work in the usual way. It is not cancer, it does not damage your gut, and it does not make your bowel more likely to become diseased later. Experts have recently updated their guidance for doctors on how to recognise and treat IBS. The main messages are: IBS can usually be diagnosed from your symptoms without lots of tests, and treatment should start with diet, lifestyle and support for stress — not just medicines.

Very common. Around 1 in 20 people in the UK and similar numbers worldwide live with IBS, and it is one of the most frequent reasons people visit their doctor about their digestion.

It can affect anyone, but it is more often seen in women and usually starts between the teenage years and the early 40s. Children and teenagers can get it too. It is less often diagnosed for the first time in people over 50, so new gut symptoms at that age are always checked carefully.

Symptoms

Common symptoms

• Tummy pain or cramping, often eased by going to the toilet
• Change in how often you poo — diarrhoea, constipation, or swinging between the two
• Bloating and a swollen, uncomfortable tummy
• Wind and gurgling
• Urgency — a sudden 'I need to go now' feeling
• A feeling of not fully emptying your bowels
• Mucus (clear jelly-like stuff) in your poo
• Symptoms that come and go in bouts, often worse during stressful times or around your period

Symptoms in children

• Recurring tummy pain, often around the belly button
• Pooing less often, or soiling (leakage) because of constipation
• Avoiding school or play because of tummy worry
• Eating less or being fussy about food
• Symptoms that flare up around exams, changes or stress

Symptoms in older adults

• Constipation is often the main problem
• Symptoms may overlap with other gut conditions, so doctors check more carefully
• New or changed bowel habits after age 50 are always looked into rather than assumed to be IBS
• Some medicines for other conditions can affect bowel habits, so a medicine review is helpful

Causes

Main causes

• The 'gut-brain connection': signals between your gut and brain are more sensitive, so normal digestion feels painful
• Changes in how quickly or slowly food moves through the bowel
• Differences in the balance of bacteria that live in the gut
• Extra-sensitive nerves in the bowel wall
• An infection in the gut in the past (called post-infectious IBS)
• Certain foods or drinks that trigger symptoms for you personally

Risk factors

• Being female
• A family history of IBS
• Stress, anxiety or low mood
• A recent bad bout of gastroenteritis (tummy bug)
• Long courses of antibiotics in the past
• Certain foods or eating patterns that your gut reacts to

When to see a doctor

See a doctor urgently if:

• Blood in your poo, or black tarry poo
• Severe or worsening tummy pain
• Unexplained weight loss or loss of appetite
• A fever with tummy symptoms
• Symptoms that wake you at night
• New bowel changes after age 50, or a family history of bowel or ovarian cancer

Book a routine appointment if:

• Gut symptoms lasting more than a few weeks that are affecting your daily life
• Symptoms that come with bloating, wind or urgency and are not settling
• Symptoms you are worried about, even if you think they are 'probably nothing'
• Symptoms that are making you avoid work, school, travel or social plans

Diagnosis

The updated guidance puts more weight on recognising IBS from a clear pattern of symptoms, rather than sending everyone for lots of tests. Your doctor will ask about your poo, pain, bloating and how symptoms affect your life. If your symptoms fit the typical pattern and you have no warning signs, IBS can often be diagnosed and treated without further tests. Blood and stool tests may be used to rule out other conditions such as coeliac disease (a reaction to gluten), inflammation in the bowel, or an infection.

Tests that may be done

• A full blood count to check for anaemia
• A blood test for coeliac disease
• A stool (poo) test to check for inflammation or infection
• Sometimes tests for thyroid problems or vitamin levels
• A camera test (colonoscopy) only if there are warning signs, or sometimes depending on your age and family history

What to expect at your appointment

Your appointment will be a conversation, not an examination first. It helps to keep a short diary of your symptoms, poo pattern and food for a couple of weeks before you go, and to bring a list of any medicines or supplements. Your doctor should explain what they think is going on and what the plan is. Ask questions — you are allowed to take your time.

Treatment

There is no single cure for IBS, but most people can get symptoms to a level that feels manageable. The new guidance puts diet changes, lifestyle support and stress management at the centre, with medicines used as a helping hand rather than the whole answer. Treatment is tailored to whether your symptoms are mainly diarrhoea, mainly constipation, or a mix.

Self-care at home

• Eat regular meals, take your time, and avoid skipping meals or eating very late
• Drink plenty of water, and cut back on fizzy drinks, alcohol and lots of caffeine
• Try reducing very fatty, fried and heavily spiced foods if they trigger you
• Keep a simple food and symptom diary for 2–4 weeks to spot patterns — don't cut out lots of foods on a guess
• Adjust your fibre: oats, linseeds and fruit are often gentler than bran, which can make bloating worse
• Move your body most days — a walk counts
• Work on sleep and stress: breathing exercises, gentle yoga, or a relaxation app can genuinely settle the gut
• Don't strain on the toilet; a footstool and unhurried time help
• Loose, comfortable clothes and peppermint tea or oil can ease cramping for some people

Medical treatments

Your doctor or pharmacist may suggest treatments based on your main symptom. Options include medicines that relax gut cramps, medicines that firm up loose stools, laxatives for constipation, and treatments that calm over-sensitive gut nerves. Some people are offered gut-directed talking therapy or hypnotherapy, which are well supported by evidence. If a low FODMAP diet (a short-term, structured eating plan that removes certain fermentable sugars) is being considered, it should be done with a trained dietitian and then foods reintroduced, so your diet stays balanced and nutritious. Always check with your doctor or pharmacist before starting anything new, including herbal remedies and supplements, because they can interact with other medicines.

When is surgery considered?

Surgery is not a treatment for IBS itself. It is only considered if tests show a separate problem that needs an operation. If anyone suggests surgery for IBS symptoms alone, it is very reasonable to ask for a second opinion.

Living with this condition

IBS comes and goes, so planning helps. Think about where the toilets are when you go out, keep spare underwear and wipes in your bag if that gives you peace of mind, and build in buffer time for journeys. Flare-ups often follow stress, poor sleep, travel or big changes, so knowing your own triggers is genuinely useful. Many people find their symptoms calm down over time, especially once they have a routine that works.

Lifestyle tips

• Keep a steady sleep routine — tiredness makes the gut more sensitive
• Build small, regular movement into your week rather than one big effort
• Try relaxation or breathing exercises before meals and before stressful events
• Be honest with your employer, school or family if you need flexibility — a private word to a manager or teacher can help
• Limit very heavy meals and large amounts of alcohol
• Review your medicines with your doctor or pharmacist — some can affect your bowels

Diet and exercise

Aim for regular meals with a mix of wholegrains, fruit, vegetables, beans, lean protein and dairy or dairy alternatives. Increase fibre gradually rather than all at once, and drink enough fluid alongside it. If you want to try a specific diet, ask for a referral to a dietitian — they can help you make changes safely without missing out on nutrients. For exercise, the goal is regular and gentle: brisk walking, swimming, cycling or dancing all help the gut and lift mood. Resistance or core exercises can also help bloating feel less bothersome.

Mental health and emotional wellbeing

IBS and mood are closely linked through the gut-brain connection — stress and anxiety can turn up the dial on gut symptoms, and gut symptoms can in turn cause worry, low mood or embarrassment. That is not a sign of weakness and it does not mean your symptoms are imagined. Talking therapies, especially ones focused on the gut, can improve both mood and symptoms. If you ever feel hopeless or have thoughts of harming yourself, please reach out for crisis support straight away — contact your local emergency number or a crisis line in your country, or tell someone you trust and ask them to stay with you.

Prevention

There is no proven way to prevent IBS, because it is linked to how your gut and brain communicate rather than to something you did wrong. What you can do is reduce flare-ups: manage stress, keep a steady routine, eat regularly, stay active and avoid trigger foods you have identified for yourself. Avoiding unnecessary antibiotics where possible may also help protect your gut bacteria — ask your doctor if an antibiotic is really needed.

Screening programmes

There is no screening test for IBS itself. Tests are used to rule out other conditions, and national bowel screening programmes exist for bowel cancer in many countries based on age — take part when invited. If IBS symptoms change, get worse, or new warning signs appear, speak to your doctor rather than assuming it is 'just IBS'.

Complications

If left untreated

• Symptoms can interfere with work, study, travel and relationships
• Anxiety and low mood are common alongside IBS and can make symptoms feel worse
• Long-term constipation can lead to piles (haemorrhoids) or small tears around the bottom
• Very restricted diets used without advice can lead to missing important nutrients
• Poor sleep and fatigue from ongoing discomfort
• A rare but serious condition can be missed if new warning signs are put down to IBS — this is why you should always report changes

Long-term outlook

The outlook is generally good. IBS does not damage your bowel or shorten your life, and most people find a combination of diet, lifestyle, stress support and occasional medicine that keeps symptoms manageable. Many people notice symptoms ease over the years. The updated guidance is good news because it means faster diagnosis, fewer unnecessary tests, and more focus on the things that actually help day to day.

Find support

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