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 ...

We all know there's a heart in the body; we've been reading about it since childhood. As long as it beats, humans live. Let's ...

High output and low output heart failure refer to how much blood your heart pumps to your body with each heartbeat. In both cases, the output is not enough to meet your body’s needs. A diagnosis of ...

Medical experts warn that heart trouble often reveals itself through subtle symptoms long before chest pain appears.

As modern lifestyles increasingly challenge the body's natural circadian rhythm, the American Heart Association is ...

After severe heart failure, the ability of the heart to heal by forming new cells is very low. However, after receiving treatment with a supportive heart pump, the capacity of a damaged heart to ...

When the human body gets hurt, most tissues heal—skin closes over a wound, bone heals itself. But not all organs heal that ...

Science writer Mary Roach is fascinated by the human body, especially, she says, the "gooey bits and pieces of us that are performing miracles on a daily basis." Take the human heart, for instance. If ...

Heart disease remains the leading cause of death worldwide, yet many of the most effective preventive measures involve simple dietary choices that can be implemented immediately. Medical professionals ...