Anemia, or a low red blood cell count, frequently accompanies colorectal cancer. Because tumors may cause chronic bleeding inside the digestive tract, individuals can slowly lose blood over time without realizing it. This gradual blood loss leads to fatigue, weakness, and pale skin. Many people are surprised to learn that their anemia is not simply due to iron deficiency but rather a symptom of an underlying malignancy. Blood tests revealing low iron levels or unexplained anemia should therefore prompt further gastrointestinal investigation.
