Here's an interesting case study (tl;dr It's more complicated than that): http://inhumanexperiment.blogspot.com/2009/09/two-brave-men-who-ate-nothing-but-meat.

Here's an interesting case study (tl;dr It's more complicated than that): http://inhumanexperiment.blogspot.com/2009/09/two-brave-men-who-ate-nothing-but-meat.html http://inhumanexperiment.blogspot.com/2009/09/two-brave-men-...