Low carb diets are getting more mainstream. See Psychology Today article about brain health or as some call it “type III diabetes”.
And here is a discussion of the role of raising livestock. This picture summarizes the article nicely. I am interested to note the role in the environment being evaluated on a less simplistic basis.
And this article discusses the relationship of healthy soil, livestock and environmental consequences. Fractal, not linear relations, again.
The above, to me, just goes along with how evolution happened; and why we need, and therefore should eat, meat.