It's not new, it's just different
Here's an interesting take on the Carnivore Diet and how it's been used to help power athletes perform better.
Dr. Anthony Gustin's Podcast
THE KETOGENIC DIET VS. THE CARNIVORE DIET AND REDISCOVERING NUTRITION ON THE ROAD TO SOBRIETY AND HEALTH – CHRIS BELLhttp://www.dranthonygustin.com/010-keto-vs-carnivore-diet/