btw, recent anthropological, linguistic and genetic data alludes to the bulk of so-called "han chinese" having its origins in SE asia, somewhere in the thai penninsula. and they, in turn, having originated from sub-saharan east africa via multiple routes of migration (either via the indian ocean and/or the long way through the sinai, then the indian subcontinent). most pacific islander people of so-called "polynesian" background are similarly of SE asian extraction, not necessarily through china.
as for chinese longevity (though it depends on region - china is a vast country), i believe it's mainly attributable to the "eat less, live longer" hypothesis, along with high intake of leafy vegetables. with the japanese, it's similar but high seafood and O3 intake probably helps too. not to mention that both have green tea, herbs, etc. regardless, these examples are based on agricultural, ie, post-
neolithic society and thus not pre-agriculture/paleo.
for the record, i don't think paleo is the optimal diet for the bodybuilder. but then again, humans didn't evolve to be muscleheads either
and thus, nor did we evolve genetically for agriculture. we evolved to be very opportunistic and to be able to eat almost anything that came our way - it just so happens that we chanced upon agriculture and animal husbandry. the rest, literally, is history.
for hunter-gatherers (well, we were really more "scavenger" than "hunter", but it doesn't sound as nice
), organ meats, bone marrow, and tallow were highly prized because of nutrient and fat content. the problem with trying to "go paleo" today is that most livestock is now grain-fed in a feedlot and therefore have little to no omega-3's. meanwhile game meats or pasture-finished meats are much more expensive.
"eating lots of meat" is a big modern distortion of the "caveman's" diet. aaronf is more correct in indicating paleo humans' opportunism: "whatever... you could scavenge up" it was high fiber - lots of nuts, seeds, leafy plants, root vegetables, tubers, and fruit. not to mention the grubs, insects and organ meats/bone marrow again...
(for the record, i happen to like liver, chitterlings, sweetbreads and marrow myself, hehe)
for a more thorough treatment of the topic, i've found
www.beyondveg.com and the work of ward nicholson to be quite insightful. not that i agree with everything they say, and as i said earlier, i don't think paleo is optimal for someone whose goal is to bodybuild, but nonetheless i feel they cover and interpret the research on this much better than most other sources i've come across.