Man Corn by Christy G. Turner II (Score 1)

“Improperly cooked maize-based diets have been associated with higher rates of homicide, suicide and cannibalism in humans,” the researchers note.

This remindeds me of the book Man Corn by Christy G. Turner II

From Goodreads:

"Christy and Jacqueline Turner’s study of prehistoric violence, homicide, and cannibalism explodes the myth that the Anasazi and other Southwest Indians were simple, peaceful farmers. Using detailed osteological analyses and other lines of evidence the Turners show that warfare, violence, and their concomitant horrors were as common in the ancient Southwest as anywhere else in the world... The authors review several hypotheses for Southwest cannibalism: starvation, social pathology, and institutionalized violence and cannibalism. In the latter case, they present evidence for a potential Mexican connection and demonstrate that most of the known cannibalized series are located temporally and spatially near Chaco great houses."

It looks like Christy and Turner can add another reason for cannabalism among the Anasazi: a corn-based diet