Do I Need Colorectal Screening If I Have No Symptoms?

Breast Care Clinic
February 17, 2026

Many people assume that if they feel well, there is no need for screening.
However, early colorectal cancer often causes no symptoms at all.

This article explains why screening is recommended even when you feel completely healthy, and who in Singapore should consider it.

Can You Have Colorectal Cancer Without Symptoms?

Yes. Early colorectal cancer and pre-cancerous polyps often cause no noticeable symptoms.

In its early stages:

There may be no pain
No change in bowel habits
No visible bleeding
No weight loss

By the time symptoms appear, the condition may already be more advanced.

This is why screening focuses on detecting:

Polyps (which may become cancerous over time)
Early-stage cancers before symptoms develop

Early detection improves treatment options and outcomes.

Why Is Colorectal Screening Recommended Even If You Feel Well?

Colorectal screening is designed to:

Detect pre-cancerous polyps
Identify early-stage colorectal cancer
Reduce the risk of advanced disease
Lower colorectal cancer mortality

Screening is preventive, not reactive.

In Singapore, colorectal cancer is one of the most common cancers. Regular screening helps reduce risk at a population level.

Who Should Undergo Colorectal Screening in Singapore?

Average-Risk Individuals

You may be considered average risk if:

You have no symptoms
No personal history of colorectal polyps or cancer
No strong family history

Screening is generally recommended starting from age 50 (or earlier depending on updated guidelines).

Higher-Risk Individuals

You may need earlier or more frequent screening if you have:

A first-degree relative with colorectal cancer
A personal history of polyps
Inflammatory bowel disease
Certain genetic syndromes

An individualised assessment is recommended.

What Are the Screening Options If I Have No Symptoms?

Faecal Immunochemical Test (FIT)

Detects hidden blood in stool
Usually done yearly
Non-invasive
If positive, a colonoscopy is recommended

Colonoscopy

Direct visual examination of the colon
Can remove polyps during the same procedure
Typically repeated every 5–10 years depending on findings

The most appropriate option depends on age, risk profile, and medical history.

What Symptoms Should Not Be Ignored?

Even if you are undergoing screening, seek medical attention if you notice:

Persistent change in bowel habits
Blood in stool
Unexplained weight loss
Persistent abdominal pain
Iron deficiency anaemia

These symptoms require medical evaluation regardless of screening status.

Key Takeaways

Colorectal cancer can develop without symptoms.
Screening aims to detect disease early, before symptoms appear.
Age and family history influence screening recommendations.
FIT and colonoscopy are common screening options.
Individualised medical advice is important.

Frequently Asked Questions (FAQs)

1. Is colorectal screening necessary if I feel completely fine?

Yes. Screening is recommended because early colorectal cancer often causes no symptoms. Detecting polyps or early cancer improves treatment outcomes.

2. At what age should I start colorectal screening in Singapore?

For average-risk individuals, screening is generally recommended starting at age 50. Those with higher risk may require earlier screening.

3. If my FIT test is normal, does that mean I don’t need further tests?

A normal FIT test reduces the likelihood of significant bleeding at that time. However, repeat testing is usually recommended annually as part of ongoing screening.

4. Is colonoscopy only done if there are symptoms?

No. Colonoscopy is often used as a screening tool in individuals without symptoms, especially those at higher risk.

5. How do I know which screening test is suitable for me?

The choice depends on your age, risk factors, family history, and overall health. A medical consultation can help determine the most appropriate approach.

When Should You See a Doctor?

You should consider medical evaluation if:

You are 50 years and above and have not been screened.
You have a family history of colorectal cancer.
You notice new or persistent bowel symptoms.
You are unsure about your personal risk level.

If you would like to understand your personal risk for colorectal cancer or discuss appropriate screening options, you may arrange a consultation with our surgical team.

An individualised assessment allows for informed decision-making based on your medical history and risk factors.

Early evaluation supports preventive care and timely management where necessary.

Consultation & Screening at Radhika Breast & General Surgery

If you would like to discuss colorectal screening options or undergo an individualised assessment, you may arrange a consultation at Radhika Breast & General Surgery.

We can help you understand: