Cortisol is the body's primary stress hormone, produced by the adrenal glands in response to perceived threat or demand. As part of the body's fight-or-flight response, cortisol increases blood sugar, suppresses non-essential functions like digestion and immunity, and sharpens focus — all in preparation for immediate action. In short bursts, this is entirely healthy and adaptive. However, when stress is chronic and cortisol remains elevated over long periods, the effects on the body and mind can be significant: disrupted sleep, weight changes, impaired memory and concentration, lowered immunity, anxiety, and increased risk of burnout.
Many people living with high stress, trauma histories, or chronic illness have dysregulated cortisol patterns — sometimes too high, sometimes too low (as seen in burnout or adrenal fatigue). Therapy can play a meaningful role in supporting cortisol regulation by addressing the sources of chronic stress, developing nervous system regulation skills, processing trauma, and building sustainable coping strategies. Understanding cortisol can help people connect the dots between their emotional experiences and physical symptoms, reducing self-blame and increasing self-compassion.
Tsigos, C., & Chrousos, G. P. (2002). Hypothalamic-pituitary-adrenal axis, neuroendocrine factors and stress. Journal of Psychosomatic Research, 53(4), 865–871. https://doi.org/10.1016/S0022-3999(02)00429-4
