Sm. Garn, FROM THE MIOCENE TO OLESTRA - A HISTORICAL-PERSPECTIVE ON FAT CONSUMPTION, Journal of the American Dietetic Association, 97(7), 1997, pp. 54-57
Given the extraordinary dietary and geographic diversity of Pleistocen
e hominids, there is no single ''Paleolithic diet'' or average pre-Hol
ocene fat intake. Even the Neanderthals initially were scavengers, pos
sibly becoming seasonal hunters of large game at a later period. Fat i
ntakes of greater than 20 g/day (11% of total caloric intake) develope
d after the domestication of mammals and then by selective breeding of
genetically fatter animals in suitably temperate climates. By the lat
e 1940s, the percent of fat in the diet rose to more than 40% in many
Western countries (including France), decreasing somewhat to about 35%
by the late 1980s in the United States, following reduced consumption
of whole milk, fried meats, and other high-fat foods. Overall, fat re
ductions to less than 30% may be facilitated by no-fat or low-fat subs
titutes or texturizers or (perhaps more effectively) by increased inta
kes of fiber and calcium and greater reliance on fats that are poorly
absorbed because of their stearate content.