14.09.2026

I don't have any symptoms—do I still need a colon cancer screening?

Colon cancer often goes undetected for a long time

Many people assume that a screening exam is only necessary when symptoms appear. But that is exactly what makes colorectal cancer so insidious: The disease often develops over the course of years without causing any noticeable symptoms.
People who have no symptoms feel healthy and often see no reason to get screened. In fact, colorectal cancer screening is specifically intended for people who have no symptoms. The goal is to detect precancerous changes or the disease itself before they cause problems.

Why Colorectal Cancer Is Often Detected Too Late

Colon cancer usually develops slowly from what are known as colon polyps. These benign precursors can grow over the course of years without causing any symptoms.

Symptoms may not appear until a later stage, such as:

Blood in the stool
Changes in bowel habits
Abdominal pain
Weight loss
Fatigue or decreased energy

If such signs appear, the disease may already be advanced. That is why early detection plays a crucial role.

Colonoscopy: The Most Effective Form of Screening

A colonoscopy is considered the gold standard for colorectal cancer screening. It not only allows for the detection of polyps and early-stage cancer, but also enables their immediate removal during the same procedure.
As a result, colorectal cancer can even be prevented in many cases before it develops.

Who is eligible to participate in the preventive health program in the Canton of Bern?

People aged 50 to 74

Residence in the Canton of Bern

No current intestinal symptoms

Planning ahead means peace of mind

Many people feel healthy and keep putting off getting screened. But precisely because colorectal cancer often causes no symptoms for a long time, it’s important to take advantage of screening programs. The earlier changes are detected, the better the treatment options and the greater the chance of preventing the disease entirely.

Conclusion

The absence of symptoms does not automatically mean there are no risks. People without symptoms, in particular, benefit from regular colorectal cancer screening. Anyone between the ages of 50 and 74 should learn about the options for early detection and take advantage of the screening services available.

Would you like to learn more?

If you have any questions, please feel free to contact Dr. André Kugener, a board-certified gastroenterologist (FMH).

Learn more about our medical center: Ostermundigen Medical Center

Watch the video here: Colorectal Cancer Screening: Why Participating Saves Lives #Prevention - YouTube

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