If you feel lost try:
"Coming Home to the Pleistocene" by Paul Shepard (Island Press, 1998).
I just got my copy yesterday but it addresses the non-diet related issues
that my book only alludes to.
These philosophical issues may have more impact on long term happiness and
thus health than any esoteric issues of biochemistry.
Ray Audette
Author "NeanderThin"
http://www.neanderthin.com