The sympathetic nervous system controls the body's flight or fight mechanism. Learn about its vital functions, & how it regulates bodily processes.

The endocrine system produces hormones in the body. Learn more about the glands in this system and the types of endocrine disorders and conditions.

Dehydration significantly impairs bodily functions, impacting brain performance, physical endurance, and digestive health. It strains the kidneys, hinders temperature regulation, and reduces ...

This system controls the body processes that occur at rest. It regulates the everyday functions of body systems under relatively stable conditions, Giordano told Live Science.

Glial cells play an important role in supporting the body's nervous system. Several types of glial cells exist. Learn more here.

Like a highway system, the vagus nerve branches profusely from your brain through your organs to marshal bodily functions, including aspects of the mind such as mood, pleasure and fear ...

Cystic fibrosis causes your body to develop thicker mucus than normal, and this degrades the functions of many of the body's systems.

Key points Besides the job of keeping you alive, breathing supports many essential systems in your body. Intentional slow, deep breathing can help improve physical and mental health in the short ...

An analysis of hundreds of biological features strengthens the evidence that some organs and body systems can age faster than others. Tracking the biological age of different parts of the body ...