1. Meta-Analysis Of Animal Fat Or Animal Protein Intake And Colorectal Cancer
This one was funded by the US National Cattlemen's Beef Association and the US National Pork Board. It looks like the engineering consulting firm Exponent was contracted to run the numbers. It was not an original study, but a meta-analysis, a reanalysis of data obtained from previously conducted studies.
It found no association:
"The available epidemiologic evidence does not appear to support an independent association between animal fat intake or animal protein intake and colorectal cancer."
2. Heterocyclic Aromatic Amine Intake Increases Colorectal Adenoma Risk: Findings From A Prospective European Cohort Study
This one was funded by the Kurt-Eberhard-Bode-Foundation (promotes medical and science research), the European Commission, and German Cancer Aid. It was an original epidemiological study of a German subset (25,540 participants) of the European EPIC prospective cohort.
It found an association. Compounds in cooked meat raised the risk of colon cancer:
"The results support data from case-control studies of a positive association between HCA intake and colorectal adenoma risk." (HCAs are Heterocyclic Aromatic Amines that come from cooking meat or fish at high temperatures.)
"Adenoma risk also increased with the consumption of strongly or extremely browned meat."