Cases of several dangerous bacterial infections and viruses have been growing around the U.S. CBS News medical contributor Dr. Celine Gounder answers questions about these health concerns.

DEAR DR. ROACH: I’m a 75-year-old woman who, for at least 10 years now, has been experiencing a rapid heart rate. My blood pressure, however, remains normal. In fact, doctors are usually surprised at ...

I’m a 75-year-old woman who, for at least 10 years now, has been experiencing a rapid heart rate. My blood pressure, however, remains normal. In fact, doctors are ...

The surprising things your heart doctor really thinks about your weight, your red wine habit, and more. The post 25 ...