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5 Common Causes of Constipation in IBS

Are you tired of dealing with the discomfort and frustration of constipation associated with Irritable Bowel Syndrome (IBS)? You're not alone. Many individuals with IBS struggle with sluggish or slow bowel movements. In this quick guide, we'll explore the most common causes of constipation in IBS.

Consumption of FODMAPs

FODMAPs, short for Fermentable Oligosaccharides, Disaccharides, Monosaccharides, and Polyols, are a group of carbohydrates and sugar alcohols found in various foods. Among individuals with IBS, certain types of FODMAPs, such as fructans and galactooligosaccharides (GOS), have been identified as common triggers for constipation. These substances can ferment in the gut, leading to gas accumulation and delayed bowel movements.

Lack of Physical Activity

Sedentary lifestyle can significantly contribute to constipation. Insufficient physical activity can slow down intestinal motility, making it harder for stool to pass through the colon. Regular exercise is crucial for maintaining healthy bowel function, as it stimulates muscle contractions in the intestines, promoting more regular bowel movements.

Inadequate Fluid Intake

Dehydration can exacerbate constipation in individuals with IBS. When the body lacks sufficient fluids, stool can become hard and difficult to pass. Adequate hydration is essential for keeping the digestive system functioning smoothly. Water, herbal teas, and other non-caffeinated beverages can help maintain proper hydration levels and support regular bowel movements.

Low Fibre Intake

Fibre plays a vital role in promoting bowel regularity and preventing constipation. However, many individuals with IBS may not consume enough fibre in their diets, leading to sluggish bowel movements. Insoluble fibre adds bulk to stool, while soluble fibre absorbs water and helps soften stool, making it easier to pass. Incorporating a variety of fibre-rich foods, such as fruits, vegetables, whole grains, nuts, and seeds, can help alleviate constipation symptoms.

Kiwi Fruits: Research suggests that kiwi fruits may offer potential benefits for individuals with constipation, including those with IBS. Green kiwi fruits, in particular, are rich in fibre and contain an enzyme called actinidin, which may aid in digestion and promote regular bowel movements. Adding kiwi fruits to the diet may help alleviate constipation symptoms and improve overall digestive health.

Poor Toilet Routine

Neglecting proper toilet habits can exacerbate constipation issues in individuals with IBS. The human body is naturally designed to eliminate waste in the squatting position, which straightens the colon for smoother evacuation. Adopting a correct toilet posture, including elevating the knees slightly higher than the hips and leaning forward, can promote more effective bowel movements.


Constipation poses a significant challenge for individuals managing Irritable Bowel Syndrome (IBS), impacting daily comfort and quality of life. By identifying and addressing the underlying causes of constipation, such as FODMAP consumption, physical inactivity, inadequate fluid intake, low fibre intake, and poor toilet habits, you can take proactive steps to manage your symptoms effectively. Incorporating targeted dietary and lifestyle modifications can help alleviate constipation and improve overall digestive well-being. In the next blog post, I will share effective strategies to get relief from constipation quickly.

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