[kzrdude]

A counter argument - billions of people subsisted on ok food for centuries, but somehow in the 20th and 21st centuries people got taller, smarter and had earlier puberties because of better nutrition.

Doesn't that mean there is a quality (and quantity) to nutrition and not just subsisting, that we need to examine? And the claim about meat is that it has a quality that is beneficial.

[tmotwu]

Certainly you have to look at causations for that holistically. People have cooked and eaten meat in the past as well. It needs to be further studied on the qualities that has driven our growth in the industrial age. I think we now have a better understanding of our bodies and how to gamify our growth, through a myriad of ways whether or not eating certain amounts of meat and balancing it with other foods.