Vending machines put out all kinds of stuff. But vending machines at work or school can dispense cavities right along with the candy and soda pop that we love so much in afternoon pick-me-ups.

So-called soft drinks don’t do teeth any favors. Not even diet soda.

That’s because sugar isn’t the real culprit. It’s carbonic acid—the stuff that gives soft drinks their fizzy bubbles can be deadly to tooth enamel. A sugary uncarbonated drink like Kool-Aid is actually easier on teeth than, say, Diet Pepsi. Of course, a regular (full sugar) soft drink just adds insult to injury. If you just can’t resist sodas then be sure to rinse with water after the treat!