Although symptoms often do not appear in the early stages of cancer, it is important to know which signs to pay attention to, said Dr. Jon Reich, a gastroenterologist at Essentia Health. "If you recognize the signs of colorectal cancer, you can report them to your doctor earlier, get a diagnosis faster, and increase the chances of successful treatment," he said. Symptoms of colorectal cancer can vary from person to person, and some people have no symptoms at all. However, for those who do experience symptoms, they are most often related to the digestive system. "Colorectal tumors grow in the colon, which can affect the way you digest food and have bowel movements. It is important to emphasize that other health conditions can cause similar symptoms, so a doctor is the only person who can assess the condition and make an accurate diagnosis," said Dr. Reich. Below are the most common signs of colorectal cancer that you should report to your doctor if you notice them: 1. Changes in bowel habits One of the early signs of colorectal cancer is changes in the frequency and consistency of stool. This includes: Blood in the stool can appear in various forms: Contact your doctor immediately if you notice blood in your stool. Although it may not always mean cancer, it could be due to hemorrhoids or other conditions, and medical examination is always necessary. In some cases, blood is not visible to the naked eye and is detected through a stool test. 3. Persistent feeling of fullness or bloating A feeling of fullness or bloating, especially after small meals, can be a sign of a problem in the digestive system and should be checked by a doctor. 4. Cramps and persistent abdominal pain Occasional abdominal pain is not uncommon, but long-lasting or worsening pain can be a warning sign. Symptoms may include: 5. Unexplained weight loss Consult your doctor if you are losing weight without changes in diet or physical activity. Causes may include: 6. Fatigue and exhaustion Pronounced and prolonged fatigue can be a result of anemia or the impact of the disease on the body. Although fatigue itself is not a specific sign, in combination with other symptoms, it requires a doctor's examination, especially if it interferes with daily activities.