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Sugar doesn't cause kids to be hyperactive, if that's what you are referring to: https://www.webmd.com/parenting/features/busting-sugar-hyperactivity-myth#1 ht

• vlehto 9y ago
  I have to agree and disagree at the same time. I used to be boy scout. A week long camp typically gets lot more tolerable around day 3. At the same time the kids typically run out of candy and cell phone battery. I'd say the problem is not high blood sugar from eating too much sugar. The problem is low blood sugar about 30min after eating all that sugar. And kids are great at keeping themselves busy enough, so they don't notice being hungry. But they do get cranky without exception. And even then the problem is not the candy. It's the fact that they supplement "real food" with candy. And the blood sugar seesaw starts to reverb.