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 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 ...

Your autonomic nervous system helps regulate emotional balance, but chronic stress or trauma can trigger an overactive fight-or-flight response. Nervous system dysregulation refers to a condition in ...

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.

A peer-reviewed study in Brain Medicine reveals that parasympathetic and sympathetic imbalances, long overlooked in psychiatric practice, may account for depressive symptoms in patients who never ...

We are born with a biological survival system that is designed to respond to any environmental or psychological threat presented to us. Our nervous system is constantly processing information and ...