Some of you might be interested in some relevant literature by a bloke called Ross Horne - a Qantas pilot that stirred up a bit of a hornet's nest.
Lots of dietary stuff in there, probably a bit like what Joe Friel's on about with his Paleo stuff.
There's online copies of his books but I've never been able to sit in front of the pooter fer that long without wanting to shove pencils in my eyes.

The Health Revolution

Health and Survival in the 21st Century

Interesting stuff...