Silver Book Fact
The incidence of colorectal cancer is more than 50 times higher in people ages 60-79 than in those under 40. 91% of new cases and 94% of deaths from colorectal cancer occur in individuals 50 and older.
American Cancer Society. Colorectal Cancer Facts & Figures, Special Edition 2005. Atlanta, GA: American Cancer Society; 2005. http://www.cancer.org/acs/groups/content/@nho/documents/document/caff2005cr4pwsecuredpdf.pdf