Why does blood sugar spike after a meal if food is digested in the stomach for several hours before it starts getting absorbed in the small intestine?
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The food moves to the small intestine in waves, always small portion at a time. Imagine squeezing an almost empty tube of toothpaste. Now liquid components travel faster (Its like a VIP pass, the liquid just skips the queue). The first liquidy “batch” of food gets into the intestine fairly quickly, which causes blood sugar to spike.
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