Food. Get me a doggie. Recreation. Working out. The Healthy Skeptic: Whitening toothpastes. It's hard to believe, but there was a time not long ago when everyone walked around (in public!)
With naturally colored teeth. Today, with so many whitening gels, strips and trays out there, yellowish grins aren't as common — nor the natural look as appealing — as they used to be. FOR THE RECORD: An earlier version of this article incorrectly identified Dr.