I had the gastric bybass surgery three years. A year ago, I had a grand mal seizure due to hypoglycemia. When my sugar levels begin to drop at 90 or lower, I start with the confusion, dizziness and sweating. When it gets under 80, I start to lose focus as in ready to pass out and get the shakes.
I have been keeping a close eye on my sugar levels in the past week. It will drop more after eating. There are times I have to work real hard just to get my levels to rise. I am now at the state of constant drowsiness and being light headed. I wake up in the middle of the night wide awake just to be exhausted in an hour. My glucose levels are usually at 81-89 in the middle of the night. The more I do, the lower it gets.