The sympathetic nervous system, which helps your heart and other vital organs function all the time, increases activity in response to danger or stress, preparing the body for extra demands. Stress is ...

The sympathetic nervous system was thought to have evolved with jawed vertebrates. But lampreys—jawless, parasitic fish that suck out the blood of their hosts—have a simple one, per recent research.

The sympathetic nervous system (SNS) plays a crucial role in the regulation of cardiovascular function, mediating rapid adjustments in heart rate and arterial blood pressure during stress, physical ...

The term “sympathetic nervous system overload” sounds daunting, but the root cause is pedestrian: stress. Stress is, of course, something we all experience all the time, but left unchecked, it can ...

The portion of our nervous systems responsible for the 'fight or flight' response can shape the severity of potentially deadly C. difficile infections, according to new research. The portion of our ...

We've all had the feeling. You're embarrassed and then there it is: a warm flush creeping up your neck and across your cheeks ...

Picture this: You're walking alone late one night, down a darkened street after leaving a Halloween party. No one is around, and your surroundings are eerily quiet. Then, suddenly, you hear rustling, ...

Autonomic dysreflexia (AD) is a potentially life threatening condition common in people who have experienced spinal cord injury in the upper back. AD occurs when an injury disrupts the nervous ...