Still, certain laboratory-resolved relationships in rats are unsettling, to say the least. Give a rat a high fat diet, and tumors proliferate. In humans, the relationship between dietary fat and cancer is not quite so clear cut. Still, the correlation is strong. Increased fat intake increases the risk of certain kinds of cancer.
Colorectal cancer is a given.
The breast cancer connection is more tenuous. Even though the cause of most breast cancers is unclear, the evidence places considerable blame on fat consumption. There are, however, exceptions. The most notable is palm oil. Sylvester gets his palm oil in big tins straight from the Palm Oil Research Institute of Malaysia.