"Of the four dietary groupings, only the junk food category showed any link with a different risk for developing colon tumors. Of the 160 people who scored low on the junk food diet, 17 developed tumors, while 18 out of the 160 people who ate the most junk food developed tumors. The numbers initially seemed similar, but after taking into account smoking and other risk factors, the researchers determined that those in the high junk food group were twice as likely to develop colon tumors." - Lit