Dr. Nassir Marrouche is director of the Heart and Vascular Institute at Tulane University with a subspecialty in electrophysiology. He treats atrial fibrillation, heart arrhythmia, irregular ...

The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

Forbes contributors publish independent expert analyses and insights. I cover global and domestic health care and conservation. A recent policy debate in Washington caught my attention. Earlier this ...