Discrimination causes nearly instantaneous spikes in cortisol levels
(archive.ph)https://archive.ph/zG6gHA racist attack could raise a person’s stress biomarkers almost immediately, with racial discrimination being an ultimate stressor, even against other stressors, such as having a fight with a spouse or financial distress.
Cortisol levels almost doubled in participants’ saliva the morning after they reported experiencing racial discrimination, such as being called slurs.
Microaggressions —such as person had been mistaken for a service worker because of their race—, on the other hand, seemed to increase cortisol levels on the very same day.
Having high levels of cortisol over time has been linked to hypertension, bone loss, and type 2 diabetes, seems to affect sleep, it's associated with depression, anxiety, and it has been shown to weaken the immune system.
https://www.science.org/content/article/discrimination-causes-nearly-instantaneous-spikes-stress-hormonesbonus link for further scientific research, complete slur database:
http://rsdb.org/races