Colon cancer is one of the most common cancers, but the good news is that it’s also one of the most preventable. When caught early, treatment is often highly effective. However, many people overlook the warning signs, dismissing them as minor digestive issues. Knowing what to watch for can make a significant difference in early detection and successful treatment.

If you notice any of the following symptoms, don’t ignore them—talk to your doctor as soon as possible.

Unexplained Changes in Bowel Habits

A sudden shift in your usual bathroom routine can be an early warning sign of colon cancer. Pay attention if you experience:

• Persistent diarrhea or constipation that lasts more than a few days
• Narrow or thin stools that are different from your usual shape
• Feeling like you still need to go even after a bowel movement

These changes may indicate a blockage or irregularities in your colon, especially if they persist.

Blood in Your Stool or Rectal Bleeding

One of the most well-known symptoms of colon cancer is blood in the stool. It may appear as:

• Bright red blood in the toilet or on toilet paper
• Dark or black stools that indicate digested blood
• Blood mixed into stool, making it appear maroon or tarry

While blood in the stool can be caused by hemorrhoids or other conditions, it should always be checked by a doctor to rule out more serious issues.

Unexplained Weight Loss

Losing weight without trying can be a red flag for several health conditions, including colon cancer. If you notice:

• A sudden drop in weight over a short period
• Loss of appetite with no clear reason
• Feeling full quickly when eating small amounts

These signs could indicate that your body is not absorbing nutrients properly or that a tumor is interfering with digestion.

Abdominal Pain, Cramping, or Discomfort

Occasional bloating or stomach pain is common, but persistent or severe discomfort should not be ignored. Watch for:

• Frequent cramping or gas pain that doesn’t go away
• A feeling of fullness or bloating unrelated to meals
• Ongoing discomfort in the lower abdomen

If pain lasts for more than a few weeks or worsens over time, schedule an appointment with your doctor.

Fatigue and Weakness

Colon cancer can cause internal bleeding, which may lead to iron deficiency anemia. This can result in:

• Chronic fatigue or a feeling of exhaustion that doesn’t improve with rest
• Shortness of breath even with mild activity
• Pale skin or feeling lightheaded

If you’re feeling unusually tired for no reason, especially along with other symptoms, it’s worth investigating.

A Persistent Feeling That Something Isn’t Right

Many people diagnosed with colon cancer say they had a gut feeling that something wasn’t right before their diagnosis. If you experience multiple symptoms that persist or feel different from your normal health, listen to your body and seek medical advice.

When to See a Doctor

If you notice any of these symptoms lasting more than two weeks, schedule an appointment with your doctor. Even if the cause isn’t cancer, it’s important to rule out serious conditions and address any underlying issues.

Regular colon cancer screenings are also essential, even if you don’t have symptoms. The American Cancer Society recommends that adults at average risk begin screening at age 45, and sooner if you have risk factors such as:

• A family history of colon cancer
• A personal history of polyps or inflammatory bowel disease (IBD)
• A sedentary lifestyle, obesity, or a diet high in processed foods
• Smoking or heavy alcohol use

The Importance of Early Detection

Colon cancer often develops without noticeable symptoms in its early stages, which is why screenings like colonoscopy and stool-based tests are so important. When detected early, colon cancer is highly treatable, with a survival rate of over 90% in the early stages.

Taking action at the first sign of symptoms can help catch potential problems before they become more serious.

Protect Your Health: Take the Next Step

Your health is in your hands. If you’re experiencing symptoms or if you’re due for a colon cancer screening, don’t wait—schedule an appointment with your doctor today. A simple conversation could save your life.

By staying informed and proactive, you can protect yourself and those you love from the dangers of colon cancer. Be sure to schedule an appointment with your primary care provider to make sure you are screened regularly. Not part of our patient family yet? Click here to find a center near you and take a tour.