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 ...

Your heart is a muscular organ that helps circulate your blood, which delivers oxygen and nutrients to your tissues. There are four chambers and four valves in your heart, and each ensures proper ...

We all know that the heart, along with the brain, is the most important organ for the body that is responsible for pumping blood. However, there exists a "second heart" as well, which functions inside ...

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 ...

A new review shows that the benefits of cardiovascular health extend from head to toe. By Nina Agrawal Doctors have long endorsed a handful of practices that protect against heart disease, the leading ...

After a heart attack, the heart struggles to recoup and maintain energy. One third of patients develop heart failure as a ...

A new gene therapy can reverse the effects of heart failure and restore heart function in a large animal model. The therapy increases the amount of blood the heart can pump and dramatically improves ...