Why does one bad moment ruin an otherwise good day? Your brain is wired to focus on the negative—but you can reprogram it.

St. Louis, Missouri-based board-certified orthodontist Dr. Erin Fraundorf said that while there are many causes of bad breath ...

Ask a Doctor columnist Trisha Pasricha explains how brushing your tongue or using a dedicated tongue scraper could be the solution to bad breath.

Most of the world's population is exposed to polluted air, and to those living in cities with chronically bad air, the smog ...