IBS, or Irritable Bowel Syndrome – what to eat and what to avoid?

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IBS, or Irritable Bowel Syndrome – what to eat and what to avoid?

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Irritable Bowel Syndrome (IBS) is a chronic digestive system disorder characterised by abdominal pain and bowel movement irregularities. The key to alleviating symptoms can be an appropriate diet and a lifestyle change. Find out what a person with IBS should eat.

Irritable Bowel Syndrome (IBS) is an increasingly common digestive system disorder. Although this condition is not considered a serious health threat, it can significantly lower the quality of life of those affected. A proper diet plays a pivotal role in controlling IBS symptoms. Do you know what to eat and what to avoid if you have IBS?

What is Irritable Bowel Syndrome?

It’s a chronic disease of the small and large intestine, primarily presenting with abdominal pain and bowel movement disorders. The causes of IBS still need to be fully understood. Genetic, environmental, and factors related to the functioning of the intestines and nervous system influence its development.


IBS can manifest in various forms, depending on which the symptoms also differ:

  1. Diarrhoea predominant: The most common symptoms are diarrhoea, sudden bowel urgency, and abdominal pain.
  2. Constipation predominant: Constipation, a feeling of incomplete bowel movement, and abdominal pain are dominant.
  3. Mixed: Patients experience both diarrhoea and constipation.

Diet in IBS

The main treatment for IBS is maintaining an appropriate diet. Dieticians and gastroenterologists recommend the low FODMAP diet as one of the best ways to control IBS symptoms. FODMAP stands for fermentable oligo-, di-, mono-saccharides, and polyols, which can trigger symptoms in those with IBS. The low FODMAP diet involves excluding or significantly limiting products containing them.

Which products to avoid in IBS?

  • Products rich in fructose e.g., apples, pears, mangoes, honey, dried fruits, citrus
  • Products rich in lactose e.g., milk, yogurt, cottage cheese
  • Fructans: garlic, onion, leek, wheat
  • Galactans: beans, lentils, chickpeas, Brussels sprouts
  • Polyols: xylitol, maltitol, and other sweeteners
  • Highly processed products e.g., fast food

Dietary recommendations for people with IBS:

  • Implement the low FODMAP diet under specialist supervision.
  • Drink at least 2 litres of water daily.
  • Limit the intake of fatty foods.
  • Eat smaller meals at regular intervals.
  • Limit the consumption of coffee and other caffeine-containing beverages.
  • Avoid alcohol and carbonated drinks.
  • Monitor fibre intake. It’s necessary, but too much can cause adverse symptoms.
  • Include probiotic supplementation with strains studied for IBS e.g., Lactiplantibacillus (formerly Lactobacillus) plantarum 299v.

Other actions helpful in IBS

While diet is the most crucial factor influencing the health and well-being of people with IBS, actions aren’t limited to it. Moderate physical activity and the ability to cope with stress or anxiety can also significantly reduce symptoms. In this area, consultation with a psychologist or psychotherapist is recommended.

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  1. Halmos, E.P., Power, V.A., Shepherd, S.J., Gibson, P.R. and Muir, J.G., 2014. A diet low in FODMAPs reduces symptoms of irritable bowel syndrome. Gastroenterology, 146(1), pp.67-75.e5.
  2. Chey, W.D., Kurlander, J. and Eswaran, S., 2015. Irritable bowel syndrome: a clinical review. JAMA, 313(9), pp.949-958.
  3. E. (2017) Low-FODMAP Diet Improves Irritable Bowel Syndrome Symptoms: A Meta-Analysis, Nutrients; 9(9): 940.

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