I just wanted to put this out there.
Google books Misdiagnosis and Dual Diagnosis of Gifted Kids and Adults -
the information regarding
reactive hypoglycemia pg 171
Caffeine usage is kind of a slippery slope. On the one hand, it does help to sharpen the focus, but it also causes when caffeine was ingested together with meals it causes their blood glucose levels to spike wildly, and insulin levels spike in response to the excess sugar, causing another drop in blood sugar. Those with type 2 diabetes get it worse, because they excrete even MORE insulin to counteract the spike in blood glucose because of the inefficient use of their insulin.
But, knowing that, I still use caffeine. Though I'm trying hard to break the habit.
I think one of the best books out there for ADD/ADHD is Driven to Distraction. I haven't gotten through all of it, but it is marvelous so far.
I wrote a post regarding OE's and ADD-like symptoms here
Hyperfocused but Scatterbrained. I'm really rushed for time but maybe this post will help.