Myths and facts about IBS and the FODMAP diet

Irritable bowel syndrome (IBS) is a common digestive disorder that affects millions of people worldwide. The FODMAP diet is an evidence-based nutritional strategy that has proven helpful in relieving symptoms for many sufferers. Despite its increasing popularity, there are many myths and misconceptions surrounding IBS and the FODMAP diet. In this article we will clear up some of these myths and get the facts straight.

Myth 1: IBS is just a psychological disorder

Fact: Although stress and psychological factors can make IBS symptoms worse, it is not a purely psychological disorder. IBS is a recognised digestive disorder in which disturbed gut function and altered gut flora play a role. It is important to consider both the physical and psychological aspects of IBS to ensure effective treatment.

Myth 2: The FODMAP diet is a gluten-free diet

Fact: Although many foods that contain gluten are also rich in FODMAPs (e.g. wheat, rye and barley), the FODMAP diet is not the same as a gluten-free diet. The FODMAP diet focuses on reducing the intake of fermentable carbohydrates, whereas a gluten-free diet specifically eliminates the protein gluten. Some gluten-free products may even be high in FODMAPs, so it is important to understand the differences between the two diets.

Myth 3: The FODMAP diet is for everyone

Fact: The FODMAP diet is specifically designed for people with IBS and similar digestive conditions. It is not necessarily suitable for everyone and may even lead to inadequate absorption of certain nutrients in some people. Before starting the FODMAP diet, it is important to seek the guidance of a healthcare professional or dietitian to ensure it is suitable for your individual needs.

Myth 4: The FODMAP diet is a lifelong diet

Fact: The FODMAP diet is usually a short-term approach consisting of three phases: elimination phase, reintroduction phase and Personalised FODMAP diet. The aim is to determine the individual's tolerance to different FODMAPs and to develop a long-term balanced diet that takes into account the specific needs of the individual. Permanent strict FODMAP elimination is not recommended as it can affect the gut flora and limit quality of life.

Myth 5: A low FODMAP diet cures IBS

Fact: The FODMAP diet can help relieve symptoms in many people with IBS, but it is not a cure. IBS is a chronic condition and symptoms can vary over time. However, an individualised FODMAP diet can help to improve quality of life and better manage symptoms.

Myth 6: All FODMAP-rich foods are bad for people with IBS

Fact: Not all people with IBS react to all FODMAPs equally. Individual tolerance can vary from person to person and from FODMAP to FODMAP. During the reintroduction phase of the FODMAP diet, you can find out which FODMAPs are problematic for you and which you can tolerate in moderation. It is important to maintain a balanced diet that takes into account individual needs and tolerances.


IBS and the FODMAP diet are complex issues and it is important to be well informed to make informed decisions about treatment and diet. If you have any questions or concerns, please contact your doctor or dietitian for individually tailored advice and support.

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