Got a Thumb Sucker or a Nail Biter? It’s Not All Bad!

Photo: various brennemans via Flickr Battling habits like thumb-sucking and nail-biting is no fun at all, and our pediatricians and dentists make sure we know exactly how bad the habits are. But according to a study published in the journal Pediatrics, it's not all bad news: kids who suck their thumbs or bite their nails may have a…