The liver stores long chains of biologically intert glucose in glycogen macromolecules located within hepatocytes. When the body requires more energy, the chains are cleaved and the glucose released into the blood stream. Glucose is essential for life, providing energy for all cellular activities through its conversion to ATP in the citric acid/Krebs/TCA cycle.

Reducing your caloric intake won't kill you and it has been shown in rats that it might even be good for you. Your liver only stores glucose, it doesn't create it (That would violate conservation of energy!).

This thread is talking about artifically spiking your blood suger which will rape your pancreas and eventually lead to diabetes. I wouldn't do it if I were you, but I might consider eating more vegetables and low calorie foods :-)