Which neurotransmitter is often referred to as the body’s ‘fight or flight’ chemical?

Adrenaline, also known as epinephrine, is the neurotransmitter commonly associated with the body’s 'fight or flight' response. This chemical is produced by the adrenal glands during times of stress, preparing the body to react quickly to perceived threats. When faced with danger, the release of adrenaline leads to physiological changes such as increased heart rate, enhanced blood flow to muscles, and elevated energy levels, enabling a person to either confront the stressor or flee from it.

In contrast to other neurotransmitters, such as dopamine, serotonin, and endorphins, which are more involved in regulating mood, pleasure, and pain relief, adrenaline is specifically linked to survival mechanisms during acute stress or danger. Its primary function is to trigger the body's immediate response to threats, making it a central player in the acute stress response. Understanding the role of adrenaline in these situations is crucial for grasping how the nervous system prepares the body for high-stakes scenarios.