I've noticed just in the space of the last 2 months that I have started to react really badly to carbs. 2 months ago I was eating 2 large cookies(I would usually binge like this every 3-4 weeks) when I had a panic attack straight afterwards. I figured it was blood sugar related. Ever since I've tried to limit my carbs still having the occasional white bread sandwich or potatoe. I just feel like my reactions to carbs are getting worse. Last night I ate a bowl of rice with chicken and felt pretty tired afterwards. I feel like my energy levels are getting worse and have had whack sleeping patterns the last couple of weeks(even with the reduced sugar diet). Prior to two months ago I was consuming more sugar and had more energy, I would have no problem consuming the occasional chocolate bar or fruit juice. My question is does hypoglycemia usually hit slowly over time or can it just hit you one day out of the blue?