I don't react to sugar at all, and I could drink 3 cans of Brun without having trouble sleeping at night.
I'm not that active either, but I take some walks every once in a while, but I'm not a member of a sport league and I'm not so creative.
I CAN concentrate about the school work, I have god writing skills, I got good grades at school, I managed to concentrate.
My "psych" is THE best one in my country, maybe in the world, he isn't just known for work with autistic people, but also with retards, thsoe with OCD, Tourette's, ADD/ADHD etc., and he has been taking tests of me for a whole year from age 6-7, It's very easy to identify what you have at that age than older people, my brain was also scanned when I was 12.