How the body produces glucose when we are fasting
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Release of glucose from stored glycogen chart over 40 days
Dr Nicola A. Englyst, Faculty of Medicine, University of Southampton. Used with permission.

Release of glucose from stored glycogen
Liver glycogen can be broken down to produce glucose which is released back into the blood stream to increase blood glucose concentrations. The combination of these processes enables us to maintain a low but significant level of glucose, despite fasting or even starvation (see figure).

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