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Digestive Condition

IBS (Irritable Bowel Syndrome)
What's Actually Happening and Why It Keeps Coming Back

IBS is one of the most common gut conditions in India, affecting somewhere between 4 and 20 percent of the population depending on how it's measured. And it's one of the most frustrating to live with, partly because it's chronic, partly because it waxes and wanes unpredictably, and partly because the standard advice (manage stress, avoid trigger foods, take antispasmodics) helps at the margins but rarely resolves anything. If you've been managing IBS for years without it improving, there's a reason for that, and it's worth understanding.

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Dr. Chhavi Bansal IBS Treatment
Dr. Chhavi Bansal
Homeopathic Physician · HomeoSure
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Quick Answer

IBS is a functional gut disorder, meaning the gut's structure looks normal but its function is abnormal. The core mechanisms include altered gut-brain signalling (visceral hypersensitivity), dysfunctional gut motility, changes in the gut microbiome, and in some cases low-grade gut inflammation or increased intestinal permeability. It's not anxiety in disguise, though stress worsens it. And it's not just about diet, though diet significantly affects symptoms. Effective treatment addresses the underlying dysfunction, not just symptom suppression.

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IBS managed for years without improvement usually means the underlying mechanism hasn't been identified. Book a consultation with Dr. Chhavi Bansal today.

What IBS Actually Is

The term "functional" often gets used dismissively, as if it means the problem isn't real. That's wrong. Functional means the structure looks normal on imaging and endoscopy, but the function is genuinely abnormal. In IBS, gut motility is dysregulated, pain perception in the gut is amplified, the gut microbiome is altered, and gut-brain communication is disrupted. These are real physiological changes. They're just not visible on a colonoscopy.

The gut has its own nervous system (the enteric nervous system, sometimes called the second brain) containing more nerve cells than the spinal cord. The gut-brain axis connects this system to the central brain via the vagus nerve and neurochemicals including serotonin, of which about 90 percent is produced in the gut. When this signalling goes wrong, pain perception amplifies and bowel function becomes unpredictable.

Common Symptoms

🤕 Recurring abdominal pain or cramping, often relieved by defecation
💨 Bloating and visible abdominal distension, typically worse through the day
💩 Diarrhoea, constipation, or alternating between both
🔄 Changes in stool consistency and frequency
😰 Urgency, especially in IBS-D subtypes
😔 Mucus in stool (common and not alarming in IBS)
😣 Feeling of incomplete evacuation after defecation
😓 Symptoms significantly worsened by stress or anxiety

The Post-Infectious IBS Pattern

One of the most clinically important patterns in IBS is post-infectious IBS, or PI-IBS. This occurs when IBS begins following a significant gut infection (bacterial gastroenteritis, giardia, amoeba). Studies suggest that around 10 to 20 percent of people who have a severe gut infection go on to develop IBS.

The mechanism involves persistent changes in gut motility (mediated partly by bile acid malabsorption), low-grade inflammation, changes in intestinal permeability, and altered microbiome composition. PI-IBS tends to be IBS-D predominant. And it has a better prognosis than other subtypes because the trigger is identifiable and some of the mechanisms can be specifically addressed.

If your IBS started after an episode of food poisoning or a gut infection, that history is diagnostically important and worth telling your treating physician explicitly.

What Standard Treatment Gets Right and Wrong

Standard IBS management focuses on symptom relief: antispasmodics for pain, loperamide for diarrhoea, laxatives for constipation, low-FODMAP diet for bloating. These work reasonably well for managing day-to-day symptoms.

What standard treatment typically doesn't address: the gut microbiome composition, intestinal permeability, visceral hypersensitivity at a root level, or the post-infectious changes that may be driving the whole picture. So symptoms are managed but the underlying dysfunction persists. This is why IBS tends to continue for years despite treatment, rather than resolving.

What a Complete IBS Workup Looks Like
  • Rome IV symptom criteria assessment and subtype classification
  • Complete blood count, CRP and ESR (to assess inflammation)
  • Coeliac serology (anti-tTG IgA) to rule out gluten enteropathy
  • Thyroid function (hypothyroidism causes constipation, hyperthyroidism causes diarrhoea)
  • Stool examination for infections and parasites
  • Colonoscopy with biopsy if red flag symptoms or age over 45
  • Detailed symptom and trigger food diary
  • History of prior gut infections (PI-IBS pattern)
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Patient Story

A Real Recovery Story

"

Ravi had been dealing with IBS for six years. He'd tried multiple elimination diets, two rounds of rifaximin, and three gastroenterologists. His colonoscopy was clean. He was told to manage stress and avoid spicy food. What hadn't been investigated was his gut microbiome composition, or his history of a severe gastroenteritis episode five years earlier that seemed to trigger the whole thing. Treatment that addressed the post-infectious component and gut barrier function made a significant difference within four months. He still watches what he eats, but the daily unpredictability is gone."

R
Ravi S.
Patient · Bangalore · treated at HomeoSure
★★★★★
Common Questions

Frequently Asked Questions: IBS

IBS doesn't have a single cause, which is one reason it's hard to treat with a single approach. The key mechanisms include: gut-brain axis dysfunction (the communication between gut and brain is dysregulated, leading to visceral hypersensitivity where normal gut sensations feel painful), altered gut motility (the gut contracts too fast or too slow depending on the IBS subtype), microbiome dysbiosis (imbalanced gut bacterial populations), intestinal permeability changes (the gut lining lets things through that it shouldn't), and in some cases post-infectious changes (IBS that begins after a gut infection, called post-infectious IBS, is a well-recognised pattern). Stress doesn't cause IBS but powerfully amplifies every one of these mechanisms through the gut-brain axis.
IBS is categorised by predominant bowel habit: IBS-C (constipation-predominant), IBS-D (diarrhoea-predominant), IBS-M (mixed, alternating between both), and IBS-U (unclassified, where the pattern doesn't fit the others). The subtype matters for treatment because the mechanisms differ. IBS-D often has faster gut transit, more visceral hypersensitivity, and more microbiome involvement. IBS-C tends to involve slower transit and different microbiome patterns. Most people's symptoms shift between subtypes over time, which is part of what makes IBS so variable.
IBS is diagnosed using the Rome IV criteria, which require recurrent abdominal pain (at least one day per week on average) associated with at least two of: change in bowel frequency, change in stool appearance, or pain that improves with defecation. Diagnosis also involves ruling out other conditions: colonoscopy and biopsy to exclude IBD and microscopic colitis, coeliac serology, thyroid function (since hypothyroidism causes constipation and hyperthyroidism causes diarrhoea), complete blood count and inflammatory markers. A diagnosis of IBS should be a positive diagnosis based on symptom pattern, not just a 'nothing else found' conclusion.
No, and the distinction matters. IBS is a functional disorder: the gut structure is normal but function is abnormal. IBD (inflammatory bowel disease, which includes Crohn's disease and ulcerative colitis) involves actual structural inflammation and damage to the gut lining. IBD shows up on colonoscopy and biopsy. IBS doesn't. IBD carries risks of complications including strictures, fistulas, and colorectal cancer. IBS doesn't cause structural damage. But their symptoms overlap significantly, which is why colonoscopy is part of IBS investigation, and why the question of 'which is this?' matters.
Yes, substantially, but diet alone rarely resolves IBS. The low-FODMAP diet (reducing fermentable carbohydrates that feed gut bacteria and produce gas) is the most evidence-backed dietary approach and helps around 70 percent of people during the restriction phase. But it's not a permanent solution: the goal is to identify specific trigger foods through systematic reintroduction, not to stay on a restricted diet indefinitely. Other patterns that help include smaller, more frequent meals, reducing alcohol and caffeine, and identifying personal trigger foods (which vary significantly between individuals). Diet manages symptoms; it doesn't correct the underlying gut dysfunction.
IBS is a chronic condition, but 'chronic' doesn't mean fixed and unchanging. A significant proportion of people with IBS see their symptoms substantially improve or resolve over years, particularly when the underlying mechanisms are addressed. Post-infectious IBS has a better prognosis than other subtypes and often improves meaningfully over 2-5 years. IBS-D responds well to microbiome-targeted approaches in many cases. The honest answer is that IBS cannot usually be cured in the sense of a single treatment that makes it disappear, but it can be significantly reduced in severity to the point where it no longer meaningfully affects daily life.
The gut-brain axis runs in both directions. Anxiety genuinely amplifies gut symptoms through the autonomic nervous system: stress hormones change gut motility, increase visceral sensitivity, and alter the gut microbiome. But the reverse is also true: gut inflammation and microbiome imbalance can drive anxiety through the same axis. So in many IBS patients, the gut and the brain are amplifying each other. This means treating only the anxiety or only the gut usually produces partial results. Both deserve attention. It also means IBS is emphatically not 'just anxiety' or 'psychosomatic', which is a reductive and unhelpful framing that many patients encounter.

Dealing with IBS that doesn't seem to improve?

Ongoing IBS without improvement usually means the underlying mechanism hasn't been addressed. Book a consultation to get a complete picture and a treatment approach that targets what's actually happening.

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