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 ...

The body's tissues can get injured in many ways, but while some injuries heal perfectly, others don't heal at all. A cut in ...

In two large studies of heart attack survivors, beta-blocker drugs benefited those with mildly impaired heart function Contradictory trial results seen in patients without heart dysfunction More data ...