As much as I advocate colon cancer screening, I think that scare tactics are a really bad thing. For instance, I have noticed how most internet websites that describe symptoms of colon cancer emphasize that the most important symptom that signals colon cancer is "narrow stool".
I experienced this symptom extensively, and the stool even got THINNER through time. I also had other hallmarks of colon cancer. I looked on the internet for alternative causes, but could not find anything. In fact, all evidence suggests a thin stool means colon cancer and a huge block. No one even mentioned IBS as a possibility.
I assumed that at age 23 it would be impossible to have colon cancer, but then I saw the posts of dozens of people who are my age who have Stage IV cancer. This frightened me and forced me to get a colonoscopy.
I recently underwent colonoscopy and the results were 100% normal: not even one polyp. This is great news for me. However, my opinion is that the literature needs to change which suggests narrow stools only indicate colon cancer. Scare tactics are not always appropriate.