Let's see the effect on brain function of the perpetual protein (and other derivatives) -overload: of a diet of way-too-much dead cow, most often processed into 'food-like-substances', thus containing additives which appear to amplify the debilitation -- a complex process of degeneration ,whose final result all can see:
Re-selection of GW Bush, against all logic and Reason.
QED? (as to causality: dead cows ==> dimimished brain function. Probably.)
Rest case.