Your heart’s job is to keep your pulse steady to pump blood throughout your body. Sometimes your heart rate is slower when you’re relaxing, and sometimes it’s faster when you’re exercising or stressed ...

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 ...

New research shows that the heart has a mini-brain -- its own nervous system that controls the heartbeat. A better understanding of this system, which is much more diverse and complex than previously ...

New research from Karolinska Institutet and Columbia University shows that the heart has a mini-brain – its own nervous system that controls the heartbeat. A better understanding of this system, which ...

A heart PET scan is a noninvasive imaging test that uses a small amount of radiation. It helps doctors understand how the heart functions and whether it is healthy. Cardiac or heart PET scans create ...

Heart damage occurs when substances or medical conditions harm heart tissue. Signs of heart damage from drugs may include chest pain, irregular heartbeat, and cough. Substances can affect the cells of ...

Maintaining a stable heartbeat is critical for survival. Your heart must constantly adapt its output to meet changing demands ...

Comparison of methods to record signals inside cells. Current methods (left) are more costly, invasive and low-throughput. The new method (right) overcomes these hurdles by using AI to reconstruct ...

A new lab-grown material has revealed that some of the effects of aging in the heart may be slowed and even reversed. The discovery could open the door to therapies that rejuvenate the heart by ...