Irritable Bowel Syndrome

Abdominal pain, unpredictable bowel habits (either diarrhoea or constipation) and bloating that disrupts your daily life may indicate Irritable Bowel Syndrome (IBS). This common digestive condition affects millions worldwide and can significantly impact your quality of life if left untreated.

Richmond Gastroenterology Centre
Dr. John Hsiang
Senior Consultant Gastroenterologist, Hepatologist & Endoscopist

MBChB (NZ), FRACP (Australasia), MD (Doctorate), FRCP (Edinburgh), FAMS (Gastro)

Dr. John Hsiang is a distinguished gastroenterologist in Singapore with extensive training and experience in digestive health. He obtained his Fellowship of the Royal Australasian College of Physicians in Gastroenterology in 2012 and holds a PhD in viral hepatitis and fatty liver disease research.

He provides care for a broad range of digestive and liver concerns, combining thorough evaluation with tailored management to support patients’ long-term well-being.

Dr Hsiang is skilled in performing gastroscopy (upper endoscopy) and colonoscopy to investigate symptoms, detect stomach and colon cancers at an early stage, and provide timely treatment options.

With a commitment to individualised care, he applies an evidence-based approach that prioritises accuracy, effectiveness and patient comfort at every stage of diagnosis and treatment.

Languages Spoken:

English, Mandarin and Hokkien

Fellowship Trained Specialist

20+ Years of Clinical Experience

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What is Irritable Bowel Syndrome?

IBS is a chronic digestive disorder causing abdominal pain and bowel habit changes without intestinal damage. Unlike inflammatory bowel diseases, IBS doesn’t cause permanent harm but disrupts normal gut function through irregular muscle movements and increased sensitivity to food and stress. IBS affects 10-15% of people worldwide, with women twice as likely to develop it. In Singapore, stress and dietary habits make IBS a leading reason for gastroenterology visits. There are different types of IBS:
  • IBS-D: Mainly diarrhoea
  • IBS-C: Mainly constipation
  • IBS-M: Mixed (alternating between both)

What Causes IBS?

IBS arises from a complex interplay of factors. An oversensitive gut-brain connection transforms normal digestion into a painful experience, while stress and emotions amplify symptoms. Certain foods—including fatty foods, dairy, wheat and artificial sweeteners—act as triggers, and imbalanced gut bacteria further disrupt digestive harmony.

Recognising IBS Symptoms

Common Symptoms

IBS symptoms vary between people but typically include:

Stomach Pain and Cramping – Usually in the lower belly, often relieved after going to the bathroom. The pain rarely happens during sleep.

Changed Bowel Habits:

  • Frequent loose stools with urgency (IBS-D)
  • Hard, infrequent stools with straining (IBS-C)
  • Alternating between both patterns (IBS-M)

Bloating – Uncomfortable swelling that often worsens throughout the day, making clothes feel tight.

Gas and Wind – Excessive gas production and difficulty passing gas.

Feeling of Incomplete Emptying – The sensation that you haven’t fully emptied your bowels.

Other Possible Signs

With proper diagnosis and treatment, most IBS patients achieve excellent symptom control and return to comfortable daily living. That’s why it is important to consult an experienced gastroenterologist if you suspect you may have IBS.

Other Symptoms may include:

  • Mucus in Stools
  • Nausea
  • Heartburn
  • Fatigue
  • Anxiety/Stress Related Symptoms

Why Proper Diagnosis Matters

Getting the right diagnosis is crucial because many conditions can mimic IBS symptoms. We need to rule out more serious conditions like inflammatory bowel disease, coeliac disease, and colorectal cancer.

Certain warning signs require immediate medical attention, including blood in stools, unexplained weight loss, symptoms starting after age 50, severe nighttime symptoms and a family history of bowel cancer.

At Richmond Gastroenterology Centre, Dr. John Hsiang uses international guidelines to diagnose IBS accurately while ensuring nothing serious is missed.

Treating Irritable Bowel Syndrome

We treat IBS using a comprehensive approach that combines dietary changes (identifying trigger foods, low FODMAP diet, smaller meals), lifestyle modifications (stress management, exercise, sleep), medications (antispasmodics, probiotics, targeted treatments) and support through counselling or gut-directed therapies when needed.

1 in 10

Prevalence in Singapore
About 10% of Singapore’s adult population has IBS -roughly one in every ten people – based on multiple local health sources such as NUHS and SingaporeDoc (NUH, HealthXchange). Prevalence is highest among individuals in their 20s through 40s, and unlike Western populations, there’s no strong female predominance in IBS rates in Singapore .

2.5 & 2.9

Cultural Differences

Globally and in Asian populations, psychological stress and anxiety are consistently associated with IBS, with odds ratios for stress and anxiety in IBS patients of approximately 2.5 and 2.9, respectively, as shown in large meta-analyses and Mendelian randomisation studies. However, Singapore-specific studies have not identified stress or anxiety as independent risk factors in multivariate models, possibly reflecting cultural or methodological differences.

What to Expect During Treatment

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Make an Appointment
Contact our clinic at 65179958 to schedule your evaluation. We'll discuss your symptoms, review your medical history and conduct a physical examination to guide our diagnostic approach.
2
Comprehensive Testing and Diagnosis
Targeted tests, if needed, to confirm IBS and rule out other conditions.
3
Personalised Treatment Development
Once diagnosed, we'll work together to develop a treatment strategy tailored to your specific needs and health goals.
4
Ongoing Care and Support
We provide continuous monitoring, treatment adjustments and support to ensure optimal outcomes and quality of life over time.

Patient Information

How is IBS different from occasional stomach upset?
IBS involves persistent symptoms that significantly impact daily life and require medical management, unlike normal occasional digestive issues.
Will I need to avoid certain foods forever?
Not necessarily. We help identify your specific triggers and many patients can reintroduce foods once symptoms are controlled.
Can stress really cause physical IBS symptoms?
Yes. The gut-brain connection means emotional stress directly affects digestive function and managing stress often significantly improves symptoms.
How long before I see improvement?
Many patients notice improvements within 2-4 weeks of starting treatment, though finding your optimal management approach may take longer.
Is IBS a serious condition?
While IBS doesn't cause permanent intestinal damage or increase cancer risk, it can severely impact quality of life without proper treatment.
Will I need surgery for IBS?
No. IBS is managed with dietary changes, medications and lifestyle modifications—surgery is not needed.
Are there natural treatments for IBS?
Yes. Natural approaches like peppermint oil, probiotics and stress reduction can be very effective as part of comprehensive treatment.
Can IBS symptoms change over time?
Yes. Symptoms can fluctuate with stress, hormonal changes, diet and other factors. Regular monitoring helps adjust treatment as needed.
Discover Our Gastrointestinal Expertise & Patient-Focused Care

Consult Our Specialist

Experiencing digestive symptoms or discomfort? Speak to our gastroenterologist for a clearer understanding of your condition and treatment options.

You may book an appointment using our contact form or call the clinic at 6517 9958

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