Pakoreaktiot

Pakoreaktiot, also known as the fight-or-flight response or the stress response, is an involuntary physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival. This ancient biological mechanism, shared by many organisms, prepares the body to either confront the threat or escape from it. The term "pakoreaktiot" is derived from Finnish, where "pako" means escape and "reaktio" means reaction.

When the brain's amygdala detects a threat, it signals the hypothalamus to activate the sympathetic nervous system and the adrenal-cortical system. This triggers a cascade of hormonal and physiological changes. Heart rate increases, blood pressure rises, and blood flow is diverted from non-essential functions like digestion to the muscles, preparing them for action. Respiration quickens, and pupils dilate to enhance sensory input. Adrenaline and cortisol are released, providing bursts of energy and sharpening awareness.

While highly effective for immediate survival in ancestral environments, in modern life, chronic activation of the pakoreaktiot due to psychological stressors can have detrimental effects on health. Prolonged exposure to stress hormones can contribute to a range of issues, including cardiovascular problems, weakened immune function, anxiety, and depression. Understanding pakoreaktiot is crucial for managing stress and promoting well-being in contemporary society.