Dr. Harold Katz talks about ways to figure out if you have bad breath, what the cause of it is, and how to get rid of stinky breath.

It's said the eyes are the window to the soul, but it's your breath that may someday reveal the future of your health. "The way I look at breath testing, it's the new frontier of medical testing," said Dr. Peter Mazzone, a lung specialist at the Cleveland Clinic. One promising cancer breath test appears to be 80 percent accurate in detecting lung cancer, as well as the type, the stage and how aggressive the cancer is. Sometimes bad breath is simply related to poor dental hygiene, but in a young child, bad breath can be a sign of an infection. The advanced breath tests being developed are still a little ways off, but the goal is to get them into doctor's offices in the next five years.