What hormone is released in response to stress and aids in raising blood pressure?

Cortisol is a hormone released by the adrenal glands in response to stress. It plays a crucial role in the body's fight-or-flight response, which prepares the body to respond to perceived threats. One of cortisol's primary functions is to increase blood glucose levels and enhance the availability of energy sources, which can be critical during stressful situations.

Additionally, cortisol helps regulate blood pressure by influencing several mechanisms in the body. It enhances the sensitivity of blood vessels to vasoconstrictors, promoting the constriction of blood vessels, which leads to an increase in blood pressure. By mobilizing energy and influencing cardiovascular function, cortisol enables the body to better cope with stress and maintain homeostasis during challenging times.

Understanding cortisol's role in the stress response highlights its importance not only in immediate survival but also in the potential for chronic stress to lead to health issues, as persistently elevated levels can contribute to hypertension and other complications.