You May Have Colon Cancer If You Notice These Signs
Having one of these symptoms does not mean you have colon cancer. Many can be caused by hemorrhoids, infections, inflammatory bowel disease, dietary changes, or other conditions. But persistent or unexplained changes should be evaluated.
1. Blood in Your Stool
Blood may appear bright red or make stool look dark or tar-like. Any unexplained rectal bleeding deserves medical attention, especially if it keeps happening.
2. A Persistent Change in Bowel Habits
Watch for a new change that lasts, such as:
-
Persistent diarrhea
-
Constipation
-
Alternating diarrhea and constipation
-
Stools becoming unusually narrow
-
Feeling that you haven’t completely emptied your bowel
3. Unexplained Weight Loss
Losing weight without intentionally changing your diet or activity level can have many causes, but unexplained weight loss should be investigated.
4. Persistent Abdominal Discomfort
Ongoing cramps, abdominal pain, bloating, or a feeling of fullness can occur with colon cancer, although these symptoms are much more commonly caused by other digestive problems.
5. Unusual Tiredness or Weakness
Colon tumors can sometimes bleed slowly, causing iron-deficiency anemia. This may result in fatigue, weakness, dizziness, or shortness of breath.
6. Iron-Deficiency Anemia Without an Obvious Cause
This is particularly important because chronic bleeding from the digestive tract may not be visible in the stool. A doctor may recommend further testing to determine why iron levels are low.
🚨 When to Get Checked
Don’t wait for symptoms to become severe. Speak with a healthcare professional if you have persistent bowel changes, unexplained weight loss, blood in your stool, or unexplained iron-deficiency anemia.
Screening is also important because colorectal cancer can develop without symptoms. The appropriate screening age and test depend on your age, personal and family history, and risk factors.
Sudden heavy rectal bleeding, black/tarry stools, severe abdominal pain, persistent vomiting, or fainting requires urgent medical attention.
The good news is that colorectal cancer is often more treatable when detected early, which is why persistent symptoms and recommended screening shouldn’t be ignored.

