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 ...

An immune cell type called macrophages, found throughout the body's tissues, are often referred to as the body's clean-up ...

Even as the pandemic virus SARS-CoV-2 has begun to subside, and now causes fewer infections and deaths compared to the heights of the crisis, many people are dealing with major, lingering effects ...

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

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 ...

An international research team has uncovered a new insight into human evolution by comparing humans' hearts with those of other great apes. An international research team from Swansea University and ...

An organ is a group of tissues that work together to perform a specific task in the body, such as digesting nutrients or producing chemical messengers that enable brain cells to communicate. Although ...