Stress is linked to the action of hormones such as ACTH (or adrenocorticotropic hormone), cortisol, adrenaline, oxytocin and vasopressin. What are their functions?
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The manifestation of a stress is always the result of a hormonal chain reaction. Because in fact, no less than five hormones come into play:
The five stress hormones and their role
- ACTH is secreted by the pituitary, a gland located at the base of the brain. Its role is to stimulate the adrenal glandswhich in turn release cortisol.
- The purpose of cortisol is to provide the brain a contribution in energy sufficient to prepare us to face the stress. It intervenes in particular in the regulation of blood pressure, cardiovascular function, immune function.
- Adrenaline, on the other hand, prepares the body to respond to stress: the heart rate and breathing speed up, the pressure arterial increases.
- Oxytocin is particularly involved in our behavior in society. She is also particularly involved in the mother-child relationship.
- Finally, vasopressin is also called antidiuretic hormone. It helps regulate urinary functions and blood pressure. It plays an important role in managing anxiety.
Source: interview with Professor Martine Duclos, Department of Sports Medicine and Functional Explorations, CHU Clermont-Ferrand.
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