3. Unexplained Weight Loss
Unintentional weight loss of more than 5% of your body weight over six months can be an early sign of colon cancer. Tumors may cause metabolic changes, leading to muscle wasting and fat loss. Additionally, cancer can reduce appetite and alter digestion, contributing to weight loss.
This symptom is more concerning when it occurs alongside other gastrointestinal signs like changes in bowel habits or abdominal discomfort. Because weight loss can result from many conditions, including infections and other cancers, it requires thorough medical evaluation.
4. Abdominal Pain or Cramps
Abdominal pain or cramps are often overlooked as a sign of colon cancer because they can be vague or intermittent. However, persistent or worsening abdominal discomfort, especially if localized to the lower abdomen, should raise concern.
These pains may be caused by the tumor pressing on the bowel wall or causing partial obstruction. The pain can vary in intensity and may be accompanied by bloating, gas, or changes in bowel movement rhythm.
Because abdominal pain has many potential causes—from benign gastrointestinal issues to serious conditions—persistent symptoms warrant medical assessment, including imaging and endoscopic studies.
5. Fatigue and Weakness
Fatigue is a common but subtle symptom that can be an early warning sign of colon cancer. Chronic blood loss from the tumor can lead to anemia, resulting in tiredness, weakness, and reduced exercise tolerance.
Fatigue in colon cancer may also be caused by the body’s inflammatory response to the tumor or nutritional deficiencies due to impaired digestion and absorption. If persistent fatigue is unexplained by lifestyle or other medical conditions, it is important to discuss it with your doctor and consider appropriate blood tests, including a complete blood count.
