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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Digestion starts in the mouth. Saliva and teeth begin the process and the tissue all through the digestive tract, that is from lips to rectum is capable of absorbing nutrients.
One treatment for low sugar in an emergency is buccal glucose. This is basically a tube of medical-grade cake frosting that is squirted in between the the cheek and lower gum so it is absorbed. The body will absorb it from there. Another treatment is juice that gets absorbed quickly as well.
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