I am saying that mammalian research models have predictive power, and that shifting to a fully corn based diet without any of the livestock based foods we'd raise on corn could have unintended side effects. Not everything happens as a first order outcome.
Every creature in the logistical food chain is performing different nutrient accumulations for the next one in the chain. If you think about bioaccumulation as a mechanism, that research should have you realizimg that "You are what you eat" has a terrifyingly poignant meaning, in the sense that if we end up seeing a smaller creature fed on a single having potential in the wild population management problems, the same thing could happen to us. By the time we realized what was going on, the damage to the ecosystem could realistically already be done.
I mean, scoff if you like. Me? I'm trying to figure out how to companion farm. Better for the ecosystem as a whole, and I like the plethora of wildlife that end up benefitting as result too.
On another note, I don't remember making this posting twice? Did I pocket post somehow? Hrrm.