On Thu, 22 Mar 2001, Phosphor wrote:

> > As I recall, we burn glucose at about
> > 8g/hour.  The authors of Life Without Bread claim that there is
> > about a 3-hour window of time following a meal for glucose to be
> > taken up and used.  This is why they set a maximum of 24g of
> > utilizable carbs per meal.
>
> does this change with mental work though? if the brain preferentially burns
> glucose when given the chance do we consume much more glucose when studying
> etc? if so can we take more carbs without affecting insulin output, since
> the brain does not require insulin to absorb the glucose?

I think it does change with mental work, but I am not clear on
the magnitude of the change.  That is, PET scans show that more
mental work causes greater energy utilization in the brain.  My
suspicion is that it's not a large absolute difference, but
that's just my guess.

Todd Moody
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