What does cortisol do during times of stress?

Cortisol, often referred to as the "stress hormone," plays a crucial role in the body's response to stress. When an individual experiences stress, cortisol is released from the adrenal glands, and one of its primary functions is to increase glucose levels in the bloodstream. This process helps provide immediate energy to the body, allowing individuals to respond effectively to stressors, whether it’s through a fight-or-flight reaction or other forms of response.

Additionally, cortisol has a significant impact on the immune system. In times of stress, the immune response can be suppressed by cortisol, which helps to prevent overactivity of the immune system and reduces inflammation. This is a protective mechanism to ensure that energy is directed towards dealing with the immediate stressor rather than immune functions that may be less critical in that moment.

While cortisol affects various physiological processes, the primary association during stress is indeed its role in increasing glucose levels and modulating immune system function. Other choices, such as stimulating milk production or regulating heart rate, do not directly relate to the immediate response and effects of cortisol during stress.