If you've seen Mat's AHS11 presentation or watched his interview with EvolutionTVOL, there's not much new in this one. His basic issues with paleo claims:
Just because our genes are identical
to paleolithic man’s does not mean
our diet should be identical. How
those genes have been expressed
(epigenetics) are considerably
different today and that makes a
difference.
Lack of grains/dairy and freedom from
diseases of civilization is an
observation … correlation is not
causality.
Just because a food wasn’t available
before the agricultural age doesn’t
mean we’re not able to tolerate that
food. Rather “there’s been
insufficient time and insufficient
evolutionary pressure for complete
adaptation to seed consumption to
arise in homo sapiens and as a
result, individuals that tolerate
grains and legumes should be
considered the minority, not the
majority.”
One new bit of info in this presentation was Mat's diet. His old diet used to consist of a large Japanese yam for breakfast, meat and veggies (some starchy) for lunch, and a can of sardines after workout. (Wow.)
He changed his diet after he started suffering from low blood sugar before lunch. (Also wow.) His new diet is 2 hard-boiled eggs for breakfast, meat and veggies (some starchy) for lunch, and a sweet potato after workout. The deal with the carbs-only dinner is similar to Paul Jaminet's neo-Agutak meal. Providing calories but not protein promotes autophagy.
On the weekend, he eats a pound of bacon or sausage for breakfast with 4 duck eggs with a snack late in the day if necessary. This monster protein/fat load helps (according to Mat) avoid metabolism slow-downs from what is essentially caloric restriction during the week.
Not the approach I would have guessed!