IBS in Canada: Symptoms, Triggers, and Management

Irritable bowel syndrome (IBS) affects between 13 and 20% of Canadians - one of the highest rates globally. Despite its prevalence, IBS is often misunderstood and underdiagnosed. IBS is a functional gastrointestinal disorder, meaning the digestive system looks normal but does not function properly. Common symptoms include abdominal pain or cramping (often relieved by bowel movements), bloating and gas, diarrhea, constipation, or alternating between both, and mucus in the stool. IBS is classified by predominant bowel habit: IBS-D (diarrhea), IBS-C (constipation), or IBS-M (mixed). Diagnosis is typically based on symptom patterns using the Rome IV criteria, after excluding other conditions. Triggers vary by individual but commonly include certain foods (dairy, gluten, high-FODMAP foods), stress and anxiety, hormonal changes (many women report worsening around menstruation), and irregular eating patterns. Management approaches include dietary modifications (a low-FODMAP diet has strong evidence for symptom reduction), stress management techniques, regular physical activity, medications (antispasmodics, laxatives for IBS-C, or loperamide for IBS-D as directed), and working with a registered dietitian. IBS is a chronic condition, but most people find significant relief through lifestyle modifications and appropriate treatment. A physician can help develop a management plan. *This article is for informational purposes only.*

This article is for informational purposes only and does not constitute medical advice. Content reviewed by licensed Canadian physicians. Last updated February 2026.