Suspect You Might Have Colorectal Cancer? Here Are the Four Early Warning Signs You Shouldn’t Ignore!
Colorectal cancer is one of the most common cancers in Hong Kong, with incidence rates remaining high for many years. Because early symptoms are often subtle or unnoticeable, many people are diagnosed at a later stage. Recognizing early warning signs and seeking timely medical evaluation can significantly improve recovery outcomes and overall well-being.
How Colorectal Cancer Develops and Its Early Warning Signs
Colorectal cancer usually begins as small growths called polyps on the lining of the colon or rectum. Over time — typically 5 to 10 years — some polyps can gradually develop into cancer.
During these early stages, the body often sends out mild but noticeable signals. Being aware of them can help with early detection and intervention.
Four Common Early Symptoms
- Changes in Bowel Habits
Persistent constipation, diarrhea, or alternating between the two without a clear cause (such as diet or stress) may indicate a problem.
You might also feel as though your bowels do not empty completely or notice an increase in bowel movement frequency — both are warning signs of colon irritation. - Blood in Stool or Unusual Stool Color
Dark red or black stools may suggest bleeding in the lower digestive tract.
Although hemorrhoids can also cause bleeding, persistent or increasing blood in stool should be checked through a fecal occult blood test or colonoscopy. - Abdominal Pain and Bloating
A tumor in the intestine may block the passage of gas or stool, causing bloating, cramping, or dull abdominal pain.
If these symptoms occur alongside loss of appetite or unexplained weight loss, you should seek medical advice promptly. - Unexplained Weight Loss and Fatigue
Losing more than 5% of body weight unintentionally over a short period, or feeling constantly tired and pale, may be due to chronic bleeding or poor nutrient absorption.
When Should You Get Checked?
You should consider screening if:
- Symptoms persist for more than two weeks without improvement;
- There is unexplained blood in the stool;
- You have a family history of colorectal cancer or polyps;
- You are over 50 and have never had a colonoscopy.
In any of these cases, consult a healthcare professional for a fecal occult blood test or colonoscopy to rule out potential risks.
Frequently Asked Questions (Q&A)
Q1: Does blood in stool always mean colorectal cancer?
Not necessarily. Conditions such as hemorrhoids, colitis, or benign polyps can also cause bleeding. However, darker blood or blood mixed with stool warrants further investigation.
Q2: Can early-stage colorectal cancer be fully cured?
When detected early and managed appropriately, the five-year survival rate exceeds 90%. The key is regular screening and early detection.
Q3: Do I need a colonoscopy if I have no symptoms?
Yes. People aged 50 or above should have a colonoscopy every 10 years, even if they feel fine. Those with a family history of colorectal cancer should consider starting as early as age 40—or even earlier if advised by a doctor.
Summary：Early detection is the most effective way to combat colorectal cancer.
Do not ignore subtle changes in your body.
Maintaining a balanced diet, regular exercise, avoiding smoking and alcohol, and undergoing routine checkups are the best strategies to protect your colon health.
Disclaimer：
The information provided in this article is for educational and informational purposes only. It is not intended to diagnose, treat, cure, or prevent any disease, nor should it replace professional medical advice. Readers are encouraged to consult with a qualified healthcare provider or integrative oncology specialist before making any changes to their diet, treatment plan, or lifestyle based on the content herein. Therapies and tests mentioned, including immune or integrative treatments, should always be…
All product names, test references, and therapy mentions are for informational context only and do not constitute endorsement. Results and experiences may vary among individuals.