Re: To sugar or not to sugar, that is the question!


"Sbharris[atsign]ix.netcom.com" <sbharris@xxxxxxxxxxxxx> wrote in message
news:1133071241.040327.129340@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
> George Cherry wrote:
>> > COMMENT:
>> > Well, no. The body can't convert fat to glucose. If the body wants
>> > glucose and it isn't in the diet as carbohydrate, the body is forced to
>> > make glucose wastefully from protein, causing muscle breakdown.
>>
>> How does the body use fat? What does fat do
>> for us (besides pad our bones)? I always thought
>> was for long-term energy storage.
>>
>> George
>
>
> Oh, it is. Fat can be burned for energy directly through the TCA/Krebs
> cycle. But you just can't go back and make sugar from it. And since
> your brain can only adapt to about 50% fat energy use even during
> starvation (the rest must be sugar) that means you have to make some
> sugar all the time from protein in a fast, to feed your brain.
>
> Thus, protein-sparing fasts, which provide just enough carbs to feed
> the brain (300 kcal a day or so), and no more.
>
> SBH

Aha. Thanks. Score another one for carbohydrates.

GWC


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