One way to check if there is in fact some truth to a bit of folk wisdom / superstition is to see how universal it is.

I was born in Russia, and have never heard about the sugar+hyperactivity thing before moving to Canada. At the same time, nearly everyone back in Russia is sure that going out lightly dressed in cold weather will make one sick, and this seems to be news to Canadians.

Living in Germany I have the same impression. This myth seems to be restricted to North America or English speaking countries.

Classic case of correlation not causing causation. I don't think anyone's particularly surprised when they see large gaggles of children being given a large quantity of sugary foodstuff and behaving in a very animated manner.

But what's the context where that happens? Parties, mostly.

It is a copy of the (linked) article at http://theincidentaleconomist.com/wordpress/sugar-and-candy-...