Quite often, I have heard the remark that children become hyperactive when high amounts of sugar are consumed.
But common websites suggest that sugar is a sedative, and the hyperactivity in children is more likely caused by 'artificial dyes and preservatives'. (http://curezone.com/forums/am.asp?i=1444631)
So, is Sugar a stimulant (for adults and children) or is it a sedative? Is there any conclusive research to validate this theory?