Gastrointestinal Disorders
6 min read
Irritable Bowel Syndrome: Understanding the Gut-Brain Axis
By Dr. Navaneeth K. Unni•Published on 2026-08-08•Patient Group: Adults
Clinical Overview & Pathophysiology
Irritable Bowel Syndrome (IBS) is a common functional gastrointestinal disorder characterized by recurrent abdominal pain, cramping, bloating, and altered bowel habits (diarrhea, constipation, or both). Rather than a structural disease, IBS is a disorder of gut-brain communication, where stress and dietary factors lead to hyper-reactive gut motility.
Key Clinical Facts & Indicators
- Abdominal Cramps: Pain in the lower abdomen, often relieved temporarily after passing stool.
- Altered Bowel Patterns: Alternating between loose stools (IBS-D), hard constipation (IBS-C), or a mixed pattern (IBS-M).
- Mucus in Stool: Passing clear or white mucus along with stool, without blood.
- Post-Meal Bloating: Visually noticeable abdominal swelling and flatulence shortly after eating.
Lifestyle & Nutritional Guidelines
Manage IBS by identifying food triggers using a food diary. Minimize high-FODMAP foods (onions, wheat, dairy) during flares. Support gut health with soluble fibers and probiotics. Manage stress using deep breathing and yoga. Plan balanced gut-friendly meals using our Diet Planner.
Frequently Asked Questions
Q: Can stress trigger IBS attacks?Yes, the gut contains millions of nerves (enteric nervous system) that communicate directly with the brain, so anxiety and stress can trigger intestinal spasms.
Q: Is IBS the same as IBD?No, IBS is a functional disorder without gut inflammation, whereas Inflammatory Bowel Disease (IBD, like Crohn's) involves chronic structural inflammation.
✓Medically reviewed by Dr. Navaneeth K. Unni
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