Colorectal cancer can be a preventable disease thanks to screenings like colonoscopies. This test is able to detect polyps in the colon and test them in order to see if they’re benign or malignant.

Unfortunately, colorectal cancer often has no symptoms, making the importance of a colonoscopy even more important. In the event that symptoms do occur they may include the following:

  • Rectal bleeding or blood in the stool.
  • A change in bowel habits (such as diarrhea, constipation, or narrowing of the stool) that lasts for more than a few days.
  • Abdominal pain.
  • A continuous feeling that you need to have a bowel movement, which does not resolve after passing stool.
  • Weakness.

Some of these symptoms may be caused by other conditions, but you should see your doctor if they persist. Any incidence of rectal bleeding or blood in the stool should be brought to your doctor's attention as soon as possible.