Bowel Cancer on the Rise in Younger People: What You Need to Know

A boy having bowel cancer symptoms

Bowel cancer, often associated with older adults, is now increasingly being diagnosed in younger individuals. Over the past two decades, there has been a sharp rise in cases among people under 50, particularly rectal cancer. While the exact causes are still under investigation, lifestyle factors such as poor diet, sedentary habits, obesity, and rising rates of alcohol consumption and smoking are believed to play a role. Additionally, advancements in screening methods may be contributing to earlier and more frequent detection in younger demographics.

Symptoms of Bowel Cancer

It's critical for younger individuals to recognize potential signs of bowel cancer and act quickly. Symptoms include:

  • Rectal bleeding or blood in the stool.
  • Persistent changes in bowel habits (diarrhea, constipation, or narrow stools).
  • Unexplained weight loss or fatigue (possibly linked to anemia caused by blood loss).
  • Abdominal pain or discomfort.

Early detection dramatically improves outcomes. Unfortunately, many younger patients delay seeking medical advice, attributing symptoms to less serious conditions like hemorrhoids or stress-related digestive issues.

Why the Increase?

The rise in bowel cancer cases among younger people may be linked to changes in diet and lifestyle over the last few decades. Increased consumption of processed foods, low fiber diets, and higher rates of obesity have likely contributed. Genetic predisposition may also be a factor, though research is still uncovering new hereditary links to colorectal cancer. Some experts have also pointed to environmental factors and disruptions to gut microbiota as potential contributors.

The Importance of a Bowel Cancer Screening

For younger individuals with symptoms or a family history of bowel cancer, consulting a doctor is crucial. Screening methods, like colonoscopies, help detect precancerous polyps and early-stage cancers, potentially saving lives. If you experience rectal bleeding, persistent bowel changes, or any unexplained gastrointestinal issues, don't ignore them.

By staying informed about symptoms and taking preventive measures, including a healthy diet and regular exercise, young people can reduce their risk of bowel cancer. 

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Dr Teresha Jayawardena

Dr. Teresha Jayawardena (MBChB, MRCGP, MSc, DRCOG) is a private GP with specialist expertise in women's and sexual health. With extensive postgraduate training and experience across multiple medical disciplines, she is dedicated to delivering compassionate, evidence-based care tailored to her patients' needs.

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