Mon, Apr-22-13, 16:05
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Senior Member
Posts: 6,498
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Plan: VLC, mostly meat
Stats: 202/200/165
BF:
Progress: 5%
Location: Montreal, Quebec, Canada
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Quote:
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Originally Posted by Bowling
Mr. Jaminet notes -- with reference to a science paper -- that our liver and kidneys can only produce 600 kcal/day of glucose (or ~25 kcal/hour) through gluconeogenesis.
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...after 3 days of fasting:
Quote:
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After 3 days of fasting, when the brain’s glucose consumption has been roughly halved by ketosis and the rest of the body is conserving glucose, the body’s rate of glucose manufacture in liver and kidneys is about 600 calories per day.
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We cannot infer that glucose production will remain there, when glucose production gradually increased from the point of start of fasting. On the contrary, we can infer that it will continue to rise up to a point that will maintain normal blood glucose. Or we can infer that glucose substitution with ketones will continue thereby reducing glucose requirements further, also maintaining normal blood glucose.
Jaminet further argues that "glucose deficiency symptoms" appear much later than only 3 days after start of fasting, in spite of normal blood glucose:
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A clue is the fact that starving people develop a hacking cough in their final weeks of life. Despite blood glucose levels in the normal range, they cease producing mucus and their airways become dry and irritated.
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This part of Jaminet's argument is quite telling in that it shows that what he calls "glucose deficiency" is not in fact a deficiency of glucose, but some other disorder. Note however, that neither starvation nor the conditions caused by starvation could be called a disorder.
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