Comment by bumby

That's a good point, but I feel like the linked article does a disservice by treating grain and animal products as largely interchangeable from a diet perspective. They are equating in terms of calories, but that's a bit of a false equivalency, considering one is used largely as a protein source while the other is not. The article disregards that people eat those sources for very different purposes. (I say this even as someone who is an advocate for vegetarian and vegan diets).