Sudden weight loss
Unexpected weight loss is often a symptom of several types of cancer, including colon cancer. Sudden weight loss is the loss of 10 pounds or more in six months or less without knowing the reason. Colorectal cancer can lead to unexplained weight loss in a variety of ways. Cancer cells use up a lot of the body’s energy supply, and the immune system also uses energy as it works hard to fight the disease. Cancer cells can release substances into the body that change the way food is converted to energy, which can cause weight loss.
Additionally, if a tumor in the colon gets large enough, it could block the colon. This blockage can affect a person’s bowel habits, which can then lead to unexplained weight loss.
Abdominal Cramps
Many people have abdominal pain at some point in their lives, and like many symptoms, it can seem minor. It is a common symptom of noncancerous conditions, such as hemorrhoids and irritable bowel syndrome. However, abdominal pain that began recently and is severe and long-lasting can be a sign of cancer.
Colon cancer occurs in the large intestine, which can affect bowel habits. This change in bowel habits can lead to cramping, bloating and abdominal pain and could be an indicator of colon cancer.