Colorectal Cancer: What You Need to Know
- MedReport Foundation
- Jun 2
- 2 min read
Colorectal cancer is one of the most common cancers worldwide. Despite its prevalence, it is also one of the most preventable and treatable forms of cancer when detected early. It affects the colon and rectum, key parts of the digestive system, and often develops silently (1). That’s why awareness about its risks, symptoms, and screening options isn’t just important, it can be lifesaving.
What Is Colorectal Cancer?
Colorectal cancer develops when abnormal cells grow uncontrollably in the lining of the colon or rectum. It often begins as small growths called polyps, which may become cancerous over time if not removed.
Common symptoms include persistent changes in bowel habits, blood in the stool, abdominal discomfort, and unexplained weight loss. However, early stages may not present noticeable symptoms, making regular screening crucial (2,3).
Risk Factors and Prevention
While anyone can develop colorectal cancer, certain factors increase risk, including age (especially over 50), family history, genetic conditions, poor diet, physical inactivity, smoking, and excessive alcohol use.
The good news? Many of these risks are modifiable.
You can lower your risk by maintaining a healthy diet rich in fibre, fruits, and vegetables, exercising regularly, avoiding tobacco, and limiting alcohol intake. Screening tests such as colonoscopies can detect and remove precancerous polyps before they develop into cancer (4).
Screening and Early Detection
Screening plays a vital role in reducing colorectal cancer deaths. Common screening methods include stool-based tests and colonoscopy procedures. Many health organisations recommend that individuals begin regular screening at age 50, or earlier if they have higher risk factors.
Early detection significantly improves survival rates, as treatment is more effective when the cancer is found in its initial stages (5)
Treatment and Advances
Treatment options for colorectal cancer depend on the stage and may include surgery, chemotherapy, radiation therapy, and targeted therapies. Advances in medical research have improved treatment outcomes, with more personalized approaches and better survival rates than in the past (6).
Ongoing research continues to explore new therapies, offering hope for more effective and less invasive treatments.
Conclusion
Colorectal cancer is a serious disease, but it is not unbeatable. With the right knowledge, healthy lifestyle choices, and regular screening, many cases can be prevented or detected early.
Awareness saves lives. Screening saves lives. Action saves lives.
References:
(1) World Health Organization. Colorectal cancer [Internet]. Geneva: World Health Organization; 2023 [cited 2026 Apr 9]. Available from: https://www.who.int/news room/fact-sheets/detail/colorectal-cancer
(2) Duan B. Colorectal Cancer: An Overview [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 [cited 2026 Apr 9]. Available from:
(3) Oregon Health & Science University (OHSU). Colon cancer signs and symptoms [Internet]. Portland (OR): OHSU Knight Cancer Institute; [cited 2026 Apr 9]. Available from: https://www.ohsu.edu/knight-cancer-institute/colon-cancer-signs-and symptoms
(4) Roshandel G, Ghasemi-Kebria F, Malekzadeh R. Colorectal cancer: epidemiology, risk factors, and prevention. Cancers (Basel). 2024;16(8):1530.
doi:10.3390/cancers16081530. PMID: 38672612.
(5) Bowel Cancer UK. Updated guidance for people who have an increased risk of bowel cancer [Internet]. London: Bowel Cancer UK; 2020 [cited 2026 Apr 9]. Available from: https://www.bowelcanceruk.org.uk/news-and-blogs/research-blog/updated guidance-for-people-who-have-an-increased-risk-of-bowel-cancer/
(6) Adebayo AS, Agbaje K, Adesina SK, Olajubutu O. Colorectal cancer: disease process, current treatment options, and future perspectives. Pharmaceutics. 2023;15(11):2620.
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