Irritable bowel syndrome (IBS) affects an estimated 15 per cent of people worldwide, yet its symptoms vary so widely between individuals that diagnosis and treatment can be challenging. New patient guidance sets out a clear pathway for people experiencing ongoing digestive symptoms, emphasising the importance of medical assessment before any dietary changes are made, and highlighting dietary approaches that may help some people manage their symptoms.
Background
IBS is described as a functional gut disorder. This means it affects how the gut works, causing symptoms such as abdominal pain, bloating, wind, and changes in bowel habits, without any visible damage or inflammation in the bowel itself. Because its symptoms can overlap with other conditions, including coeliac disease, inflammatory bowel disease, and in some cases gynaecological or bowel conditions, guidance stresses that a GP assessment should always come first.
Getting a diagnosis
Doctors typically ask about symptoms that need urgent attention, such as blood in the stool, unexplained weight loss, night-time symptoms, or a family history of bowel cancer. These help rule out more serious conditions before IBS is considered. People who have already cut out wheat or gluten before testing are advised to tell their doctor, since gluten usually needs to remain in the diet for coeliac disease testing to be accurate.
The role of diet
According to the guidance, diet is one of the most common triggers reported by people with IBS. A diet low in FODMAPs, a group of fermentable carbohydrates found in foods such as wheat, onions, garlic, certain fruits, and dairy products, is described internationally as a leading dietary approach for managing IBS symptoms. These carbohydrates can draw fluid into the bowel and are broken down by gut bacteria, producing gas that may contribute to bloating, pain, and altered bowel habits in sensitive individuals.
The guidance points to a study conducted in Melbourne, Australia, in which most participants educated about a low-FODMAP approach reported a meaningful improvement in their symptoms. A separate study referenced from Scandinavia found that a majority of people with IBS linked their symptoms to specific foods. The low-FODMAP approach is described as involving a temporary elimination phase, followed by gradually reintroducing foods to identify individual tolerance levels, so unnecessary long-term restriction can be avoided.
Stress and the gut-brain connection
The guidance also highlights the link between the gut and the nervous system, sometimes called the gut-brain connection, where stress and anxiety can make symptoms feel worse. Techniques such as relaxation, regular sleep, and in some cases talking therapies are mentioned as supportive strategies alongside dietary management.
Why this matters
For patients, this guidance reinforces that IBS, while uncomfortable and sometimes disruptive to daily life, is different from conditions involving ongoing bowel damage or inflammation. It also underlines that self-directed dietary changes, particularly cutting out gluten or wheat without testing for coeliac disease first, could complicate diagnosis.
What to keep in mind
- Any persistent digestive symptoms should be discussed with a GP before starting dietary changes.
- Dietary approaches such as low-FODMAP eating are generally recommended under the guidance of a dietitian, to avoid unnecessary nutrient gaps.
- The studies referenced relate to specific groups of patients, and individual results may vary.
- Further research continues into the causes of IBS and how best to manage it long-term.
Reference
This article is based on patient guidance published by Healthy Food Guide (Healthy Food Guide, “Managing IBS: A step-by-step guide to gut comfort”, first published October 2026). The specific peer-reviewed studies mentioned regarding low-FODMAP outcomes in Melbourne and food-related symptoms in Scandinavia were not fully cited with authors, journal, or publication details in the source material, so the original research could not be independently verified or referenced here.
This article is a journalistic summary for informational purposes only. It does not constitute clinical advice or a recommendation to alter treatment decisions.