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Sat, 18 Jan 2003 23:32:56 +1000 |
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>Are you saying that domestic animals do not have a higher >concentration of
saturated fatty acids than do comparable wild >animals?
the simple point is that unless there is a substantial proportion of SFAs in
any given lipid compound, it will be an oil [liquid] rather than a fat
[solid]. fish like having oils since they promote buoyancy. hence their
livers are full of oil. land animals need solidity, hence they manufacture
SFAs from starches to provide structural support so they can walk around.
this is why the fat you see on the edge of a rump steak is a) fat and not
oil and b) visible and solid. Cordain would have us believe that either
paleo man threw away all the fat he found on the beasts he killed, or there
were strange walking oil bag creatures that sloshed their way to the hunters
dining table.
the somewhat more complicated issue is that paleo man ate a fair variety of
animals in most instances, and obtained different sources of fat from the
animals: intramuscular, subcutaneous, cavity, organ surrounds, and marrow.
its impossible to know the exact proportions of SFA/MFA/PUFA that any paleo
man ate unless someone has a time machine. All we can say is that there is
a lot of SFA in every kind of fat in land animals, and a fair proportion in
fish. cod liver oil is 20% SFA for example.
This is why cordain's position is too ludicrous for words.
Andrew
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