Concerning the evidence in Chart 4.7 [reflecting a well-designed and implemented, country to country study made by the late Kenneth K. Carroll, professor at the U of West Ontario, of the positive correlation between total fat intake and breast cancer], the solution seems obvious: if we eat less fat, then we'll lower our breast cancer risk. Most scientists made this conclusion and some surmised that dietary fat caused breast cancer. But that interpretation was too simple. Other charts (Charts 4.8 and 4.9) prepared by Professor Carroll were largely, almost totally, ignored (Charts 4.8 and 4.9). They show that breast cancer was associated with animal fat intake but not with plant fat.
-from The China Study at pages 84 and 85.