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Cushing's syndrome occurs when a person has elevated levels of cortisol, the body's primary stress hormone, inside the body for a long time.

In addition to finding that ecosystem collapses occur much sooner when there are multiple stresses, the paper also determined that they collapse faster if the primary stress is particularly powerful.

The study's authors acknowledge that more research is needed on the subject, as possible explanations range from the psychological changes caused in children after they are abused to the possibility that abuse victims develop physical changes like abnormal levels of cortisol, the body's primary stress hormone.

In one small study, participants who affirmed their values had “significantly lower cortisol responses to stress” compared with the control group, researchers wrote, referring to the body’s primary stress hormone.

Much of the skin-psyche connection comes down to the overproduction of cortisol, the primary stress hormone, and its effect on the skin barrier.