In some people, a large-carb meal produces unstable glucose levels: First the glucose is high, then low, then high again over a period of maybe 2-12 hours. That's one possible mechanism.
Alternatively and without appeal to a large-carb meal, in the absence of food, some people experience low blood glucose. If the glucose level drops low enough, the liver may dump glucose into the blood stream, causing high blood glucose.
The bottom line is that the body's glucose thermostat, so to speak, may alternate between low and high rather than establish a medium level. And, however it comes about, a transitory high blood glucose level can induce sleepiness.
I'm not claiming this is what you're experiencing, only that this is a possible mechanism. If you want to investigate this possibility, you could purchase and use a glucometer. Or, you could ask your physician to perform a glucose tolerance test, which might confirm glucose instability. Or, you could just enjoy the nap if doing so fits your lifestyle :-)
On Fri, Aug 6, 2010 at 11:00 AM, tamaratornado <tamaratornado@yahoo.com> wrote:
"moderately elevated blood glucose resulting from the consumption of a large carbohydrate load."
How does that happen when I haven't eaten anything all day?
Why would I get sleepy when I haven't eaten anything?
--
Bill McCarty
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