6 Subtle Changes That Could Be Signs of Colon Cancer

Colon cancer (colorectal cancer) often develops quietly without causing major symptoms in its early stages. However, paying attention to these 6 subtle changes in your body can help with early detection:

1. Changes in Bowel Habits

This is one of the most common early signs. It includes persistent diarrhea, constipation, or a change in the consistency of your stool (such as narrower, pencil-thin stools) that lasts for more than a few days or weeks.

2. Rectal Bleeding or Blood in the Stool

You might notice bright red blood in the toilet bowl or on your toilet paper. Sometimes, the blood is dark or tarry, which indicates it is coming from higher up in the colon. In many cases, the blood is hidden (occult blood) and can only be detected through a stool test.

3. Persistent Abdominal Discomfort

Subtle but frequent stomach issues can be a warning sign. This includes ongoing cramps, gas, bloating, or a feeling of fullness and pain in the abdomen that doesn't seem to go away.

4. A Feeling That Your Bowel Doesn't Empty Completely

Even after having a bowel movement, you might feel an urge to go again or feel a sensation that your bowel isn't completely empty (tenesmus). This can happen if a tumor near the end of the colon creates a blockage.

5. Unexplained Weight Loss

Losing weight without trying is a common sign of various cancers, including colon cancer. Cancer cells consume energy, and the immune system uses more energy fighting the disease, which can lead to unexpected weight loss.

6. Unexplained Fatigue and Weakness

If you feel constantly exhausted despite getting enough rest, it could be a sign. Colon tumors can bleed slowly over time, leading to a shortage of red blood cells, a condition known as iron-deficiency anemia, which causes chronic fatigue.

When to See a Doctor

If you notice any of these symptoms lasting for more than a couple of weeks, it is important to consult a healthcare professional. While these signs can also be caused by less serious conditions like hemorrhoids, irritable bowel syndrome (IBS), or infections, getting screened is the best way to rule out colon cancer.