Originally Posted by: JFRICKRemember this.....

You can get intestinal worms from chewing your fingernails. Not from the nails themselves, but the dirt that get's underneath them. You'd be surprised how many eggs of those types of worms are under your nails.

Try to imagine having worms everytime you chew your nails. May or may not help...

I am a nail biter as well and have been getting worse lately for some reason. Its funny, I pulled my fingers out of my mouth as soon as I read your post.