7 Foods To Avoid in a Colon Cancer Diet Colorectal cancer is one of the most dangerous forms of cancer, with the highest fatality rate of all the cancers. Colon cancer is the most common form of cancer, with around 135,000 new cases being reported each year and 50,000 of those succumbing to the disease. Colon cancer is a serious disease and eating certain types of food can make it worse. If you want to learn more about eating a diet for colon cancer, this blog will help. Cancer is a life-threatening disease that needs to be treated at the earliest. Read more about colon cancer and colon cancer treatment.