Hyperthyroidism and adrenaline5/23/2023 ![]() ![]() The following may also impact cortisol levels: Regrettably, chronic stress can also lead to higher cortisol levels for sustained periods, leading to health complications down the road. For example, many people fear public speaking and feel their "fight or flight" systems activate when approaching a group of people. Of course, this "fight or flight" system is still present in our modern human bodies and shows up in various scenarios. Another hormone released in this process is adrenaline, which helps direct blood flow away from "non-critical" tissues like the gut, sending it to the heart. When we sensed a threat like a predator, the hypothalamus in the brain signaled the adrenal glands to release cortisol, so blood and energy could shift to the organs necessary for saving our lives-primarily the heart, lungs, and muscles. This hormone is often referred to as the stress hormone because it is released when we are stressed.Ĭortisol drove the "fight or flight" response for our primitive human ancestors. Cortisol is a hormone made and released by the adrenal glands that sit just above the kidneys.
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