Johns Hopkins Medicine scientists who arranged for 48 human bioengineered heart tissue samples to spend 30 days at the International Space Station report evidence that the low gravity conditions in ...

Though an estimated 60 million people around the world have atrial fibrillation, or A-fib, a type of irregular and often fast heartbeat, it's been at least 30 years since any new treatments have been ...

The human heart is an extraordinary organ, responsible for tirelessly pumping blood to deliver oxygen and nutrients to every part of the body. Its rhythm—heart rate—is an essential vital sign checked ...