Warning Signs of Colon Cancer (Colorectal Cancer)

→ Tiredness that doesn’t improve with rest

→ Often due to slow blood loss → anemia → reduced oxygen delivery to body tissues

→ People may notice low stamina, weakness, breathlessness on stairs, or palpitations

→ Pale skin and dizziness

→ These can occur if anemia becomes significant

  Iron Deficiency Anemia (A Silent but Strong Clue, especially in Adults)

→ Low hemoglobin or low ferritin without a clear cause

→ In adults, especially men and post-menopausal women, iron deficiency is often due to blood loss until proven otherwise

→ Colon cancer can cause slow internal bleeding that you cannot see

 9) Nausea, Vomiting, and Severe Constipation (Late / Emergency Signs)

→ Nausea or vomiting with abdominal swelling

→ Can occur if the colon becomes significantly blocked

→ Suggests bowel obstruction, which needs urgent medical care

→ Inability to pass stool or gas

→ A strong warning sign of obstruction—go to emergency care

 10) Mucus in Stool (Sometimes Overlooked)

→ Mucus mixed with stool

→ The colon lining produces mucus when irritated

→ If mucus is persistent and paired with blood, pain, or bowel habit change, evaluation is needed

 Who Is at Higher Risk (So Symptoms Matter Even More)

→ Age 45+ (risk increases with age)

→ Family history of colon cancer or polyps

→ History of colon polyps

→ Long-standing inflammatory bowel disease (ulcerative colitis / Crohn’s colitis)

→ Obesity, smoking, heavy alcohol intake

→ Diet high in processed/red meats and low in fiber

 When You Should See a Doctor Without Delay

→ Any rectal bleeding that repeats or doesn’t clearly resolve

→ Change in bowel habits lasting more than 2–3 weeks

→ Persistent abdominal pain/bloating with weight loss

→ Unexplained anemia, fatigue, or weakness

→ Symptoms plus family history of colon cancer/polyps

 Key Takeaway

→ Colon cancer can look like “simple digestion issues” at first

→ Persistent bowel habit change + bleeding + weight loss or anemia are major red flags

→ Early detection saves lives—if symptoms persist, evaluation (and screening when appropriate) is the safest approach

 Medical disclaimer: This information is for education only and not a substitute for medical diagnosis. If you have any red-flag symptoms (bleeding, persistent bowel changes, weight loss, severe pain), please consult a doctor promptly.