Catch yourself thinking negative or pessimistic thoughts? Blame your high cortisol levels, influencers would have you believe. Online, cortisol—commonly called the “stress hormone”—is a ...

It could be the distinct lack of vitamin D, a concerning news cycle and growing to-do lists, or a modern culture obsessed with over-productivity – but it's not hard to see why most of us are ...

Mean serum cortisol concentrations did not differ significantly in the three categories of animals during the first venipuncture at 13:15 (P > 0. 1; Table 1). At 13:30, mean cortisol concentration was ...