Just wanted to share what I learned from our pedia. My son had been quite hyperactive for a while, more than usual. Enough for our pedia to recommend we see a developmental psychologist. That sent me into panic. But before we went, she told us to also try to stop breastfeeding when my sugar is high, because it is possible the excess sugar is making him climb the walls. (Unfortunately, that also meant I stopped bf because my sugar was flip flopping all over the place even with diet control and meds). 2 months later, my son is calmer and easier to handle. My pedia concluded that it was my breastmilk after all. I didn't know high blood sugar could pass through breastmilk. I'm actually still not 100% convinced, but I am sharing just in case you know someone who can relate.