Really? I'm going to have to look that up now. I'm basically a popcorn addict.
Yeah, those little crunchy pieces of the kernel can work their way into your gums and cause massive dental problems. It's the corn equivalent of eating glass. Which is why one shouldn't feed popcorn to pets.
There are times when popcorn is practically a staple of my diet. I like the light butter (microwave) or light seasoned salt (air-popped) the most, though movie popcorn is pretty good as well.
...now I'm craving popcorn!