The belief of Kiesha is that she was treated unfairly, her bloodstream likely contains high levels of cortisol.
Cortisol is an essential hormone that plays a major role in regulating the body's stress, controlling body fat, activating anti-inflammatory pathways, and functions significantly in metabolism.
The expectation of promotion but did not get it causes some anxiety, stress, and loss of interest to Kiesha. As a result of this, the stress regulating hormone cortisol increases in the bloodstream to control the significant effect of stress on the body.
Therefore, it is well described above.
To learn more about Cortisol, refer to the link:
https://brainly.com/question/1059659
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