Often dismissed as stress or dehydration, fainting can be the heart's first warning sign. Cardiologists caution that unexplained blackouts may signal serious rhythm or structural problems, and early ...

Vasovagal syncope is the most common type of fainting, a temporary loss of consciousness. It's a condition that happens when your blood pressure and heart rate suddenly drop, delivering less oxygen to ...

LONDON — You may have heard that people who feel faint should sit with their heads between their knees, but is that true? And how can you tell whether you or someone else who has fainted should go to ...

Picture this: you’re standing in line at the grocery store when suddenly you feel dizzy, nauseous, and before you know it, you’re waking up on the floor with concerned strangers hovering over you. If ...

And now an update on the science of swooning. NPR's Jon Hamilton reports on evidence that fainting can be caused by a newly discovered pathway between the heart and the brain. JON HAMILTON, BYLINE: ...

Syncope is a transient loss of consciousness and postural tone followed by spontaneous recovery without therapeutic intervention. It is a common clinical problem, the origins of which are often ...

A newly discovered pathway between the heart and brain may explain why healthy people faint. The pathway appears to carry signals from the heart's lower pumping chambers to an area of the brainstem ...