"Dana Carpender" > wrote
> Cite?

Eaton suggests that early primate diet was roughly 95% "plant foods". (see
associated citations)

....plant foods such as fruits, leaves, gums, and stalks probably comprised
at least 95% of their dietary intake with insects, eggs, and small animals
making up the remainder (Milton, 1993; Tutin & Fernandez, 1993). The general
nutritional parameters of an eating pattern along these lines can be
estimated with modest confidence, although certainly not with mathematical
exactitude. Protein would have contributed a greater proportion of total
energy than it does for most contemporary humans, but with much more from
vegetable sources than from animal. (Popovich, 1997) Simple carbohydrate
intake would have been strikingly below that now common, and, somewhat
counterintuitively, such diets would have provided only moderate levels of
starch and other complex carbohydrates so that the total carbohydrate
contribution to dietary energy would have been less, not more, than is
typical in contemporary affluent nations. Dietary fiber would have exceeded
current levels by an order of magnitude: 200 grams vs. 20 grams a day
(Milton, 1993): for some ancestral hominoids, colonic fiber fermentation may
have provided over 50% of total dietary energy. (Popovich, 1997) Daily
intake of vitamins and minerals is likely to have been considerably greater
than at present with the likely exception of iodine, consumption of which
would have varied with geographic location according to oceanic proximity,
volcanic activity, prevailing winds and rainfall. As it is for all other
free-living terrestrial mammals, sodium intake would have been only a
fraction of that currently common and would have been substantially less
than that of potassium. (Denton, 1995) Availability of phytochemicals, like
that of vitamins and most minerals would, in all likelihood, have been
substantially greater than for Americans and other Westerners.

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