I don't know about more protein. And how long ago? Wheat's been around a while.
Farming Origins Gain 10,000 Years
BBC | 6-23-2004
Posted on 06/23/2004 7:42:34 PM EDT by blam
http://www.freerepublic.com/focus/f-news/1158957/posts
also possibly of interest:
Atkins diet beats low-fat fare
MSNBC | 11-18-02 | AP
Posted on 11/18/2002 8:32:27 PM EST by Paradox
http://www.freerepublic.com/focus/news/791475/posts
Dental Detectives Reveal Diet If Ancient Human Ancestors
National Geographic | 11-9-2006 | Sean Markey
Posted on 11/09/2006 7:59:40 PM EST by blam
http://www.freerepublic.com/focus/f-news/1735933/posts
Early human relative ate prehistoric smorgasbord
Reuters | Thu Nov 9, 2006 | Will Dunham
Posted on 11/09/2006 7:22:34 PM EST by Pharmboy
http://www.freerepublic.com/focus/f-chat/1735900/posts