As a food source, pecans are a natural choice for preagricultural society.

Fiber intake in preagricultural diets is thought to have exceeded 100 g/day.

Supporters also point to several potentially therapeutic nutritional characteristics of preagricultural diets.

But over the past several years experts have come to realize that an earlier "preagricultural revolution" by prehistoric hunter-gatherers was at least as important.

The preagricultural foragers developed what amounted to banking systems, in which food surpluses were stored, with some people owning more than others.

They are clearly affiliated to the mausoleums and therefore not necessarily attributable to the preagricultural millennial societies in that area.

The notion that preagricultural hunter-gatherers would have typically consumed a diet relatively low in carbohydrate and high in protein has been questioned.

Based upon commonly available modern foods, it includes cultivated plants and domesticated animal meat as an alternative to the wild sources of the original preagricultural diet.

Since preagricultural times, the report said, the world has lost about one-fifth of all its forests, from more than 12 billion acres to under 10 billion acres.

Furthermore, preagricultural hunter-gatherers may have generally consumed large quantities of carbohydrates in the form of carbohydrate-rich tubers (plant underground storage organs).

Yet it argued for an intruder far more sophisticated than the precomputerized, preindustrial, preagricultural Midgwins, as well as for Kirk's inexplicable awareness that the intruder was, in fact, so sophisticated.

The paleolithic diet is a modern dietary regimen that seeks to mimic the diet of preagricultural hunter-gatherers, one that corresponds to what was available in any of the ecological niches of Paleolithic humans.

One of the most frequent criticisms of the Paleolithic diet is that it is unlikely that preagricultural hunter-gatherers suffered from the diseases of modern civilization simply because they did not live long enough to develop these illnesses, which are typically associated with old age.

In response to this argument, advocates of the paleodiet state that while Paleolithic hunter-gatherers did have a short average life expectancy, modern human populations with lifestyles resembling that of our preagricultural ancestors have little or no diseases of affluence, despite sufficient numbers of elderly.

More than 70% of the total daily energy consumed by all people in the United States comes from foods such as dairy products, cereals, refined sugars, refined vegetable oils and alcohol, that advocates of the Paleolithic diet assert contributed little or none of the energy in the typical preagricultural hominin diet.