What hormone is often associated with the "fight or flight" response?

The hormone commonly associated with the "fight or flight" response is epinephrine, also known as adrenaline. This hormone is produced by the adrenal glands and plays a critical role in preparing the body to respond to perceived threats. When an individual is faced with a stressful situation, the release of epinephrine triggers several physiological changes: it increases heart rate, elevates blood pressure, and boosts energy supplies. These changes enhance physical capabilities, allowing the body to react swiftly to danger.

Epinephrine’s effects prepare the body for immediate action by optimizing muscle performance and ensuring more blood flow to vital organs, thereby aiding survival in confrontational or emergency situations. This rapid hormonal response is a fundamental aspect of the body’s fight or flight mechanism, highlighting its importance in stress responses.