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5 symptoms of bowel cancer that are mistaken for common illnesses

TOI Lifestyle Desk
| ETimes.in | Last updated on - Jun 6, 2025, 08:22 IST
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​5 symptoms of bowel cancer that are mistaken for common illnesses​

Bowel cancer, also known as colorectal cancer, accounts for approximately 10% of all cancer cases. It is the second leading cause of cancer-related deaths worldwide. Bowel cancer predominantly affects older individuals. Early detection is crucial, as it significantly increases the chances of successful treatment and survival. In recent years, there has been a noticeable rise in cases among younger adults, and hence, awareness and screening are even more important across age groups. What makes this cancer dangerous is that it often has no symptoms in the early stages. And some of them often get mistaken for less serious conditions. Here are five symptoms of bowel cancer that one must not miss.


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Changes in bowel habits

A change in your normal bowel habit should not be ignored. Diarrhea or constipation lasting more than a few weeks can be a red flag. Though many tend to dismiss it as a result of changes in diet, stress, or medications, it could be more. Anything like diarrhea, constipation, or frequent toilet trips should be addressed seriously. A feeling that you need to poop, even after emptying the bowel warrants attention. A tumor may cause alternating bouts of diarrhea and constipation or a feeling that the bowel hasn’t fully emptied.

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Blood in stool

Blood in the poop is never a good sign. Bright red or dark blood in the stool is often mistaken for hemorrhoids or minor tears. Though these are common causes, rectal bleeding can also indicate bowel cancer, particularly if it recurs or is accompanied by pain or changes in bowel habits.

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Weight loss

Sudden, unexplained weight loss is often celebrated as a happy accident or tied to diet changes. Unexplained weight loss is not a good sign. Losing weight even without trying is a sign that should not be ignored. Bowel cancer can cause weight loss due to the body’s increased energy demands or reduced nutrient absorption.

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Weakness and fatigue

Yes, this could be surprising. Fatigue is a frequent complaint in modern life, often dismissed as stress, lack of sleep, or overwork. However, persistent exhaustion and weakness that doesn’t improve with rest can signal bowel cancer. The disease may cause internal bleeding, leading to anemia, which manifests as unrelenting tiredness.

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A lump in the tummy or back

A lump in the tummy (abdomen) or back passage (rectum) could be a sign. The lump, which often gets dismissed as swelling, could indicate a tumor in the colon or rectum caused by bowel cancer. If this symptom is persistent, it requires further investigation, such as imaging or a colonoscopy.

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Other symptoms include:

  • cramping pains in the abdomen

  • feeling bloated

  • constipation and being unable to pass wind

  • being sick

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Prioritize gut health

For a healthy and happy gut, eat a well-balanced and nutritious diet. Add gut-friendly foods such as prebiotics and probiotics.

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Don't panic

Colorectal cancer often shares symptoms with several common gastrointestinal (GI) conditions, such as hemorrhoids, irritable bowel syndrome (IBS), infections, or inflammatory bowel diseases (IBD) like Crohn’s disease and ulcerative colitis. These conditions can present with many of the same signs, making it difficult to distinguish between them.


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Consult your doctor

If any of these symptoms persist, especially for 3 weeks or more, it is important to see your doctor right away, so the cause can be found and treated, if needed. Regular screenings are important to catch the disease early and begin treatment.



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Diet

Eat a nutritious and well-balanced diet.

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Exercise

Exercise in general, can help reduce the risk of cancer.

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Stay safe

Stay healthy and safeWhat are uric acid stones?

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