Hi, Kiteboarder:
Is this hypoglycaemia? Or the Caffeine fix or both?
Probably diet-induced (temporary) hypoglycemia: Caffeine is implicated in type 2 diabetes; it causes release of insuulin by somehow tricking the adrenals.
In my introduction to fasting I suggest avoiding caffeine for that reason--it can make us hungry, also and best not to have withdrawals from this substance, too.
HEALTH,
John