Cordain isn't asserting that Carbs are NOT needed, he is asserting from both the Archaelogical and Ethnographic(study of tribes on first contact diet) that their diet was animal based as far as CALORIES. This is only a problem to understand when one considers animal based as meat and doesn't consider it was animal mono and poly unsaturated fat based, which I realized on my own, even though it had already been published by Cordain earlier.

So basically the assertation is that we evolved on Marrow a monounsaturated fat, as well as Brain a polyunsaturated fat for the majority of our calories. This doesn't eliminate that carbs were eaten or even necessary.

Although the archaelogical and ethnographic evidence may support this, it still needs to be verified in BIOCHEMISTRY to see if it is ideal to generate ATP(the energy molecule of life) from a diet of mainly marrow/brain as the base of their diet vs vegetation (roots/grains/even fruits etc)


The key question still is, is ATP best generated from Marrow/Brain or from Euro root vegetables(salsify/carb dense chestnut/carrot/etc), or from grains or fruit even.