Diabetic mellitus

The main source of energy in your body cells that make up muscles and other tissue is Glucose, a sugar.

Glucose is derived from foods you ingest and is stored in your liver as glycogen.
Glucose is absorbed into the bloodstream and with the assistance of insulin, enters cells
Your liver also makes glucose
To keep your glucose levels within normal range, your liver will break down glycogen to glucose and send it into the bloodstream. This might occur if you haven’t eaten for a while, for instance, overnight.

This process in the normal way in which your body maintains a normal blood sugar level (Mayo Clinic, 2018)