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, which enables the fight-or-flight response, was thought to be present only in jawed vertebrates. Analysis of a jawless vertebrate suggests that this system might be a ...

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 ...

In a review published in the journal Advanced Science, researchers discussed the interplay of the immune system and the sympathetic regulation of vital metabolic organs such as the pancreas, intestine ...

Lately, everyone seems to be talking about what happens when the nervous system becomes “dysregulated” – including a cascading array of ailments both physical and psychological. Google searches for ...

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 ...

Theresa Larkin does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

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 ...