You're curled up on the couch, finally relaxing after a long day when suddenly, your heart starts racing. You're obviously not exercising and you don't think you're stressed, so why does it feel like ...

Chest pain or palpitations can signal hidden heart trouble. Know when an ECG test is needed, what results show, and when to seek urgent care.

Your heart beats approximately 100,000 times every single day, pumping roughly 2,000 gallons of blood through your body without taking a single break. This remarkable organ works tirelessly from the ...

The number of heart attack deaths has plummeted in the U.S. over the course of the last half-century. Doctors have tied the remarkable shift to improved detection and more effective treatment for ...