Amadeus Schmidt wrote:

>At the moment I look for annother explanation, why the intermediate 
energy
>storage in fat is preferred over that in glycogen (some other vitamins 
and
>Zinc come into the play).

In terms of function, it makes sense to spare glucose for the brain, as 
you noted.  Since glucose is needed for short-duration high-intensity 
exertion too (i.e., emergencies), this is another reason to conserve it.

>I think that the not-availability of short-chain EFAS (LA,LNA) is what
>would force membranes to be made from SFA/MUFA.
>This would make sense to show up as  dangerous,
>as low-EFA food (below 20%) would be hard to find in wild food.
>And wild food beeing natural for humans.

I agree, except I think it is the absolute amount and not the ratio 
that matters.  Referring back to the other post, if we need 2-10g of 
PUFA per day to keep membranes permeable, then the amount of SFA being 
used as fuel shouldn't matter.  It would only be *absolute* scarcity of 
PUFA that would force more SFA to be incorporated in the membranes.

Todd Moody
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