After gastric sleeve (stomach reduction) surgery, constipation may occur in some patients. Because the nutritional regimen changes, fluid intake decreases and the stomach volume is reduced, bowel movements may slow down. This situation can create physical discomfort and reduce your quality of life. In this process, drinking enough water is critically important for preventing constipation and for the metabolism to work properly. Consuming water in small sips throughout the day helps soften the stool and makes it easier to go to the toilet.
However, recent scientific research shows that just saying “eat fibre‑rich foods, drink lots of water” is not enough to ease constipation. Especially the fruit kiwi has emerged as a natural and effective support for patients who experience constipation after gastric sleeve surgery.
Kiwi: A Gut‑Friendly Fruit
In a guide prepared by experts at King’s College London in London, it is stated that consuming 2 kiwis per day increases bowel movements and softens stool, making going to the toilet easier. Kiwi is rich in both soluble and insoluble fibre. It also increases the water content in the intestines, helping the digestive system to function regularly.
Even if consumed without the peel, kiwi contains fibre; when eaten with the peel, it gives the extra benefit of additional fibre. Therefore, if your digestive system allows, you may also consume it with the peel.
In addition to kiwi, dried prunes also show a positive effect on the digestive system. Eating 8‑10 dried prunes per day can support bowel movements. Whole grain products like rye bread also increase daily fibre intake and provide a similar benefit.
Role of Probiotics
Probiotic supplements may be beneficial in some patients; however, not every probiotic shows the same effect. Therefore, if you are considering using probiotics after gastric sleeve surgery, it is best to determine which type is suitable for you with your dietician or physician.
Conclusion: Small Steps, Big Relief
Constipation after gastric sleeve surgery is a common but manageable condition. Drinking plenty of water, moving enough, and adding natural fibre sources such as kiwi and dried prunes into your diet can rebalance your digestive system. Remember: drinking sufficient amounts of water throughout the day keeps the intestines moist and enhances the effect of fibre‑rich foods. This small habit can make a big difference for making toilet habits easier.
Remember: Every individual’s metabolism is different. Therefore, planning your diet in collaboration with the healthcare team monitoring your surgery is the most correct and safe way.
References
BBC Turkish. “Constipation’s new recipe: Kiwi.” https://www.bbc.com/turkce/articles/cjd051j7mzpo
Dimidi, E., et al. (2025). “New dietary approaches for constipation management.” Journal of Human Nutrition & Dietetics.
