You glance at your heart rate monitor during a tough run and an unusually high number jumps out at you. Should you be excited or concerned?

The CDC reports that heart disease is the leading cause of death for men, women and people of most racial and ethnic groups in the US. That's why it's essential to make sure your heart is healthy.

Dr. Myerburg answers the question: 'How Do Pacemakers Know To Pace Faster?' — -- Question: How do pacemakers know when I need a faster heart rate, for example when I am exercising or anxious?

Sara Moniuszko is a health and lifestyle reporter at CBSNews.com. Previously, she wrote for USA Today, where she was selected to help launch the newspaper's wellness vertical. She now covers breaking ...

Yes, allergies can increase your heart rate. This may occur as a symptom of allergic rhinitis or as a side effect of an allergy medication. Learn more about prevention and treatment options. Your ...