Thanks for that link. It's an excellent analysis of the actual data from the study. I'm part way into reading it and right away the author has thrashed some of the claims of the original study. It appears that even some of the basic claims of correlation aren't even correct.

Added: Schistosomiasis infection is such a huge cofounder for colorectal cancer rates that it is ridiculous to have claimed dietary cholesterol from animal sources as the cause.