How the body produces glucose when we are fasting
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Metabolism summary diagram
Image adapted from Virtual Chembook, Illinois, USA, 2003.

Gluconeogenesis
This pathway synthesises new glucose using non-carbohydrate precursors (glycerol from the breakdown of triglycerides, lactate during anaerobic glycolysis and amino acids from muscle protein degradation). 90% of gluconeogenesis occurs in the liver but some occurs in the kidney too. Insulin regulates gluconeogenesis. The newly made glucose is released back into the blood stream to raise blood glucose levels.

 
 
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