This look at what is happening in your body when you have a can of coke is REALLY
interesting Scary. Have a read if you dare.
We no longer sell fizzy drinks or sweets at the camps I run and tend to run with drinks of water/squash and homemade snacks and cakes. It had such a positive effect on the experience of hospitality, and on having a much more level and engaged group of young people with out the hyperactivity then sugar crash.
(BTW The trendy thick milkshake bottles have even more sugar in than coke!)