The Warning Signs Too Many People Ignore
For decades, colon cancer was widely considered a disease of older adults. That is no longer the full picture.
While colorectal cancer is still more common with age, cases are rising among adults under 50. Because of this shift, screening guidelines now recommend that average-risk adults begin screening at age 45.
One of the biggest challenges in younger patients is delayed diagnosis. Symptoms are often dismissed or attributed to hemorrhoids, stress, diet, or irritable bowel syndrome. Many people assume they are too young for colon cancer, which can delay testing and diagnosis.
Most colon cancers develop slowly over time, often beginning with abnormal growths in the lining of the colon called polyps. Some polyps can become cancerous if they are not detected and removed. This long window is why screening matters. When colon cancer is found early, it is often highly treatable and can sometimes be prevented entirely.
Who Is at Higher Risk?
Several factors can increase the risk of colon cancer, including:
- Family history of colon cancer or advanced polyps, especially in a first-degree relative
• Inflammatory bowel disease such as Crohn’s disease or ulcerative colitis
• Obesity
• Sedentary lifestyle
• Smoking
• Heavy alcohol use
• Diets high in processed foods and red meat
• Low fiber intake
• Type 2 diabetes
However, some younger adults diagnosed with colon cancer have no obvious risk factors. That is why persistent symptoms should never be ignored.
Symptoms You Should Not Ignore
Warning signs can vary, but several symptoms should always prompt medical evaluation:
- Rectal bleeding or blood in the stool
• A persistent change in bowel habits
• New constipation or diarrhea
• A feeling that the bowel is not fully emptying
• Abdominal pain, cramping, or bloating that continues or recurs
• Unexplained fatigue, especially from iron deficiency anemia
• Unintentional weight loss
Hemorrhoids are common, but persistent or recurrent bleeding, especially when combined with fatigue, bowel changes, or weight loss, should always be evaluated.
What Screening Actually Looks Like
For adults at average risk, screening begins at age 45.
Colonoscopy is considered the most comprehensive screening test because it allows physicians to examine the colon directly and remove precancerous polyps during the same procedure.
Other screening options include stool-based tests that can be completed at home. The FIT test checks for hidden blood in the stool, while stool DNA tests such as Cologuard look for both blood and certain abnormal DNA markers.
These tests can be effective screening tools, particularly for people who might otherwise avoid testing. However, if a stool test is positive, a colonoscopy is still required for further evaluation.
If you have a family history of colon cancer or another high-risk condition, screening may need to begin earlier than age 45.
When GI Appointments Take Too Long
Access to gastrointestinal specialists can sometimes take time. If you cannot get a GI appointment quickly, start with your primary care provider.
Your doctor may order blood work, including a complete blood count and iron studies, especially if fatigue or bleeding is present. A stool-based screening test may also be recommended while waiting for a specialist appointment.
If symptoms become severe, including heavy bleeding, severe abdominal pain, vomiting, dizziness, fainting, or signs of bowel obstruction, urgent medical evaluation should be sought.
Lowering Your Risk
While not every risk factor can be controlled, certain daily habits can help lower the risk of colon cancer.
Getting screened at the recommended age is the most important step. Eating more fiber-rich foods, maintaining a healthy weight, exercising regularly, avoiding smoking, and limiting alcohol intake can also support colon health.
Most importantly, persistent symptoms should never be ignored. Rectal bleeding, ongoing bowel changes, or unexplained fatigue deserve medical attention.
Colon cancer is no longer something younger adults can assume is too early to worry about. Paying attention to symptoms and staying up to date with screening can make a life-saving difference.
Pull quote:
Double board certified gastroenterologist, Dr. Natalie Pavelock of Digestive Disease Medicine of CNY shares, “Rates of colorectal cancer in adults under 50 have been steadily increasing over the past two decades, yet many younger patients experience delays in diagnosis because symptoms like rectal bleeding, abdominal pain, or changes in bowel habits are often attributed to benign conditions such as hemorrhoids or IBS. That’s why awareness is so important—these symptoms should never be ignored simply because someone is young.
Screening plays a critical role in prevention and early detection. At-home stool tests like Cologuard can detect abnormal DNA and blood in the stool and are a convenient first step for average-risk patients. However, a colonoscopy remains the gold standard because it not only detects cancer but also allows physicians to remove precancerous polyps during the same procedure, preventing cancer from developing in the first place. Early screening and prompt evaluation of symptoms can truly save lives.”
