From the posts of Loren Cordain on the Paleodiet list on 6/3/97 and 12/1/97,

>>although the lipid content of  wild animal marrow (a food commonly used by
>>preagricultural man) is generally quite high in total fat percent (~90%
>>or >), it contains the lowest saturated fat content (20%) of four
>>tissues we have studied (brain, marrow, white adipose tissue and brain).

>>Stone age
>>diets, although high in animal based food were low in saturated fat,
>>even when fattier portions of the carcass were consumed.   Our analysis
>>of the lipid composition of portions of wild animal carcass which we
>>recently presented in Bethesda (1) confirm this concept.   The combined
>>total amount of polyunsaturated and monounsaturated fat in wild animals
>>would have almost always equaled or exceed the saturated fat content.
>>
>>                                REFERENCES
>>
>>1.      Cordain L et al.  The fatty acid composition of muscle, brain,
>>marrow and adipose tissue in elk: evolutionary implications for human
>>dietary lipid requirements.   World Rev Nutr Diet 1998, in press.


--------------------------------------------
John Pavao asked:

> How would our ancestors have accomplished this 10,000+ years ago?
>
> ----------
> Nevertheless, it seems to me it is important that
> a high % of our fat intake comes from unsaturated fatty acids.