People usually use the opposite argument: if we've been eating meat for so long, how could it be bad?
A food we've evolved with can have a negative impact on us because the evolutionary trade-off is to optimize for reproductive age. Something like high cholesterol, for example, didn't stop our ancestors from siring children in their teens and 20s.
On the other hand, foods we started eating recently including novel foods don't have this antagonist pleiotropic effect.
But we did evolve with meat.
biorach
The point is the _amount_, not whether we co-evolved or not
A food we've evolved with can have a negative impact on us because the evolutionary trade-off is to optimize for reproductive age. Something like high cholesterol, for example, didn't stop our ancestors from siring children in their teens and 20s.
On the other hand, foods we started eating recently including novel foods don't have this antagonist pleiotropic effect.
But we did evolve with meat.