Published 10 Nov 2025
From Constipation to Feeling âFullâ Too Soon: Top Doctor Warns Against 6 Colon Cancer Red Flags
A leading doctor warns that early symptoms of colon cancer are often ignored. Constant constipation, feeling full too quickly, unexplained weight loss, and blood in stool are key red flags that should not be overlooked.

Introduction
A senior oncologist has issued a strong warning about early signs of colon cancer, saying most patients ignore the symptoms until the disease reaches an advanced stage.
Colon cancer, also known as colorectal cancer, is rising among adults under 45 globally â something doctors are now calling âa hidden epidemic.â
The doctor pointed out that common digestive problems may actually be early warning signs if they persist for weeks.
6 Warning Signs You Should Never Ignore
1. Constipation that doesnât go away
If your bowel movements remain irregular for weeks or you constantly feel the need to pass stool but nothing happens, it could indicate a blockage in the colon.
2. Feeling âfullâ very quickly
When the stomach feels full after eating very little, it may be due to swelling or obstruction in the intestine.
3. Blood in the stool
Many people assume it is due to piles, but doctors warn that blood in stool should always be checked.
4. Sudden change in bowel habits
Frequent diarrhea, thin pencil-like stool, or alternating constipation and diarrhea can signal changes in the colon.
5. Unexplained weight loss
Losing weight without any diet or exercise changes is a major red flag and could indicate cancer activity.
6. Constant abdominal pain or discomfort
Long-term cramps, gas, or a feeling of pressure that doesnât go away should be examined.
The doctor says these symptoms are often dismissed as âdigestive issues,â which delays diagnosis.
Colon Cancer Is Rising in Younger Adults
Earlier, colon cancer was largely seen in older people.
Now, doctors say more cases are being found in those in their 20s, 30s, and early 40s.
Reasons behind this increase may include:
- Low-fiber diets
- Processed and junk food consumption
- Lack of exercise
- Smoking and alcohol use
The doctor added that awareness is the first step to prevention.
When Should You See a Doctor?
You should immediately seek medical attention if:
- Symptoms last longer than two weeks
- There is blood during bowel movements
- You notice a sudden change in appetite or energy levels
Doctors suggest getting tested if you have a family history of cancer or digestive diseases.
A simple screening test, colonoscopy, can help detect cancer early, when it is most treatable.
Conclusion
Digestive discomfort may look normal, but if symptoms remain consistent, it could be signaling something more serious.
Recognizing the early signs of colon cancer can save lives.
The doctorâs message is clear:
đ âDo not ignore changes in your bowel habits. Early detection is the best protection.â

Dr Sudheer Pandey
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