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Understanding Post-Surgical Digestive Changes
March 31st, 2026

Is It Normal to Have Diarrhea After Surgery?

Yes, diarrhea after surgery is common and affects approximately 20-30% of patients. Anesthesia medications, antibiotics, and changes in gut bacteria during hospitalization frequently disrupt normal digestive function. Pain medications, particularly opioids, can initially cause constipation followed by loose stools as the body adjusts. Surgical stress also affects the nervous system that controls bowel movements. Most post-surgical diarrhea resolves within 3-7 days as your digestive system returns to normal. However, persistent diarrhea lasting more than a week, severe dehydration, or bloody stools warrant immediate medical attention as these may indicate complications requiring treatment.

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