What are the early symptoms and signs of colon cancer

Early symptoms and signs of colon cancer may include changes in bowel habits, blood in the stool, abdominal pain, weight loss, etc. Early detection and treatment are the key to improving survival rates, and regular screening is recommended, especially for high-risk groups.

1. Changes in bowel habits

One of the most common early symptoms of colon cancer is a change in bowel habits. Patients may experience constipation, diarrhea, or both, with a significant increase or decrease in bowel movements. This change may be related to the tumor blocking the intestine or affecting intestinal peristalsis. If bowel habits remain abnormal for more than two weeks, it is recommended to see a doctor as soon as possible.

2. Bloody or black stools

Blood in the stool is one of the typical symptoms of colon cancer. The blood may be bright red or dark red, and sometimes appear as black stool. This is caused by ruptured blood vessels or ulcers on the surface of the tumor. Hemorrhoids may also cause blood in the stool, but blood in the stool caused by colon cancer is usually accompanied by other symptoms, such as abdominal pain or weight loss.

3. Abdominal pain or discomfort

Patients with colon cancer often feel dull pain, bloating or discomfort in the abdomen. The location of the pain may be related to the location of the tumor. As the tumor grows, the pain may gradually worsen, and even symptoms of intestinal obstruction may occur, such as severe abdominal pain and vomiting. If the abdominal pain persists or worsens, you should seek medical attention immediately.

4. Weight loss and fatigue

Unexplained weight loss and fatigue may be early signs of colon cancer. Tumors consume nutrients in the body, causing loss of appetite and malabsorption, which in turn leads to weight loss and fatigue. If weight loss is significant in a short period of time and there is no other obvious reason, you should be alert to the possibility of colon cancer.

5. Anemia

Colon cancer may cause chronic blood loss, which can lead to anemia. Patients may experience symptoms such as paleness, dizziness, and fatigue. Anemia is often associated with blood in the stool, but sometimes the blood in the stool is not obvious and can be easily overlooked. A routine blood test during a regular physical examination can help detect anemia.

The early symptoms of colon cancer may not be obvious and can be easily overlooked, but early detection and treatment are crucial. It is recommended that people over 40 years old undergo regular colonoscopy examinations, especially those at high risk with a family history of colon cancer. Maintaining a healthy lifestyle, such as a balanced diet, moderate exercise, quitting smoking and limiting alcohol consumption, can also help reduce the risk of colon cancer. If the above symptoms occur, you should seek medical attention in a timely manner and undergo a detailed examination for early diagnosis and treatment.