When I go  out to pick up lunch, I usually run into a least a couple of local teens at the grocery store, and usually at least one of them is buying a candy bar and an energy drink.  I worry about energy drinks and make it a practice not to buy them for my teen, or let her drink them when I am around.  I realize she might be drinking them at other times, but I encourage her to avoid them.  I haven't really done the research to verify that energy drinks are dangerous, but according to an article on AOL Health today, my fears are well placed.

Energy drinks are under-studied, overused and can be dangerous for children and teens, warns a report by doctors who say kids shouldn't use the popular products.

The article goes into detail about specific incidents of problems for teens that drink energy drinks and it worth a quick look if you're a parent.