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Colorectal Cancer

Colorectal Cancer in Young Adults: Signs Not to Ignore

Written by Dr. Varadharajan V, Surgical Oncologist, Chennai

Published · Updated · Medically reviewed by Dr. Varadharajan V · Last reviewed: · 4 min read

Young office worker pausing at his desk with abdominal discomfort

Quick Answer

Warning signs include rectal bleeding, change in bowel habits, abdominal pain, unexplained weight loss, tiredness from anaemia and a feeling of incomplete emptying. Young adults with these symptoms, especially if they persist for more than a few weeks, should see a doctor. A colonoscopy may be advised to find the cause.

Colorectal cancer is often thought of as a disease of older adults, but cases in people under 50 have been increasing in many countries. Young adults are more likely to dismiss symptoms as piles, stress or stomach upset, which can delay diagnosis. Recognising warning signs and getting checked early can make a big difference.

Why Is It Increasing in Young People?

The exact reasons are not fully known. Possible contributors include:

  • Diets high in processed and red meat
  • Low fibre intake
  • Obesity
  • Physical inactivity
  • Sugary drinks
  • Changes in gut bacteria
  • Smoking and alcohol

Genetics also play a role in some cases.

Warning Signs

  • Blood in stool or rectal bleeding
  • Change in bowel habits, such as diarrhoea, constipation or narrower stools
  • Abdominal pain or cramping
  • Feeling that the bowel does not empty fully
  • Unexplained weight loss
  • Fatigue or breathlessness from anaemia
  • Iron deficiency without clear cause

Who Is at Higher Risk?

  • Family history of colorectal cancer or polyps
  • Inherited conditions like Lynch syndrome or familial adenomatous polyposis
  • Inflammatory bowel disease such as ulcerative colitis or Crohn's disease
  • Obesity and sedentary lifestyle

Why Is Diagnosis Delayed?

  • Symptoms are blamed on piles or diet
  • Young people may avoid doctors
  • Doctors may not suspect cancer in younger patients
  • Embarrassment about bowel symptoms

How Is It Diagnosed?

  • Physical examination including rectal exam
  • Blood tests for anaemia
  • Colonoscopy with biopsy
  • CT scan to check spread if cancer is found

Is Treatment Different?

Treatment is based on stage, similar to older patients. It may include surgery, chemotherapy and radiation. Young patients may also need genetic testing and fertility counselling before treatment.

How to Lower Risk

  • Eat more fibre, vegetables, fruits and whole grains
  • Limit processed and red meat
  • Maintain a healthy weight
  • Stay active
  • Avoid smoking and limit alcohol
  • Know your family history

Key Takeaways

  • Colorectal cancer is rising in under-50s.
  • Rectal bleeding and bowel changes need attention.
  • Symptoms are often wrongly blamed on piles.
  • Family history increases risk.
  • Early evaluation leads to better outcomes.

Final Thoughts

Being young does not rule out colorectal cancer. Listening to your body and seeking help early is the best protection. For colorectal assessment, you can consult Dr. Varadharajan, a surgical oncologist in Chennai.

Discuss this with a specialist

If you or a family member is dealing with colorectal cancer, the safest next step is a personal evaluation. Book an appointment with Dr. Varadharajan to review your reports and options.

Find the clinic location, hours and directions at Iswarya Hospital, Tharamani, Chennai.

Frequently Asked Questions

Need answers? Find them here...

Part of the Colorectal Cancer guide

This article is part of our complete guide to colorectal cancer surgery, which explains the bigger picture and links to every related topic.

Related reading

About the Author

Dr. Varadharajan V, Surgical Oncology

Dr. Varadharajan V

Surgical Oncologist, Breast Oncologist, Head & Neck Oncologist

M.Ch Surgical Oncology, FIAGES, FALS, FMAS, M.S General Surgery, MBBS

Iswarya Hospital, Chennai

Dr. Varadharajan V is a highly trained Surgical Oncologist committed to delivering ethical, patient-centric, and evidence-based cancer care. With strong academic credentials and extensive hands-on experience across multiple oncological subspecialties, he is skilled in managing a wide spectrum of malignancies, including breast, gastrointestinal, gynecologic, and peritoneal surface cancers. His clinical foundation comes from institutions such as Sri Ramachandra Institute of Higher Education and Gleneagles Global Health City, where he has served in senior oncology roles.

Seek urgent medical care for severe bleeding, fever above 100.4 F, breathing difficulty, chest pain, uncontrolled vomiting, a wound that opens or leaks, or any sudden worsening after surgery.

This article is general medical information only. It is not a diagnosis and does not replace a consultation with your own oncologist or with Dr. Varadharajan V. Diagnosis, stage and fitness decide the right treatment for each person. In an emergency, go to the nearest hospital.

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