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Kuipers RS, Luxwolda MF, Dijck-Brouwer DA, Eaton SB, Crawford MA, Cordain L, Muskiet FA:
Estimated macronutrient and fatty acid intakes from an East African Paleolithic diet.
Br J Nutr. 2010 Dec;104(11):1666-87. Epub 2010 Sep 23.

"(...)We conclude that compared with Western diets, Paleolithic diets contained consistently higher protein and LCP, and lower LA. These are likely to contribute to the known beneficial effects of Paleolithic-like diets, e.g. through increased satiety/satiation. Disparities between Paleolithic, contemporary and recommended intakes might be important factors underlying the aetiology of common Western diseases. Data on Paleolithic diets and lifestyle, rather than the investigation of single nutrients, might be useful for the rational design of clinical trials."

http://www.ncbi.nlm.nih.gov/pubmed/20860883