Cortisol is a steroid hormone, in the glucocorticoid class of hormones, and is produced in humans by the zona fasciculata of the adrenal cortex within the adrenal gland. It is released in response to stress and low blood-glucose concentration. br br Read more here: br br Watch similar videos here: br br See more from Wiki Videos: br br Follow us on Facebook : br Follow us on Twitter : br Our Website : www.wvprod.com br br This video is the sole and exclusive property of WV Production Limited.