The stress that comes from studying for an exam, preparing for a big meeting at work or pulling longer hours to close the deal can all potentially lead to personal growth. Being rejected by a publisher, for example, may lead a writer to rethink their style. And being fired could prompt someone to reconsider their strengths and whether they should stay in their field or branch out to something new.
But the line between the right amount of stress and too much stress is a thin one.
“It’s like when you keep doing something hard and get a little callous on your skin,” continued Oshri, who also directs the UGA Youth Development Institute. “You trigger your skin to adapt to this pressure you are applying to it. But if you do too much, you’re going to cut your skin.”
Good stress can act as a vaccine against the effect of future adversity
The researchers relied on data from the Human Connectome Project, a national project funded by the National Institutes of Health that aims to provide insight into how the human brain functions. For the present study, the researchers analyzed the project’s data from more than 1,200 young adults who reported their perceived stress levels using a questionnaire commonly used in research to measure how uncontrollable and stressful people find their lives.
Participants answered questions about how frequently they experienced certain thoughts or feelings, such as “in the last month, how often have you been upset because of something that happened unexpectedly?” and “in the last month, how often have you found that you could not cope with all the things that you had to do?”
Their neurocognitive abilities were then assessed using tests that measured attention and ability to suppress automatic responses to visual stimuli; cognitive flexibility, or ability to switch between tasks; picture sequence memory, which involves remembering an increasingly long series of objects; working memory and processing speed.
The researchers compared those findings with the participants’ answers from multiple measures of anxious feelings, attention problems and aggression, among other behavioral and emotional problems.
The analysis found that low to moderate levels of stress were psychologically beneficial, potentially acting as a kind of inoculation against developing mental health symptoms.
“Most of us have some adverse experiences that actually make us stronger,” Oshri said. “There are specific experiences that can help you evolve or develop skills that will prepare you for the future.”
But the ability to tolerate stress and adversity varies greatly according to the individual.
Things like age, genetic predispositions and having a supportive community to fall back on in times of need all play a part in how well individuals handle challenges. While a little stress can be good for cognition, Oshri warns that continued levels of high stress can be incredibly damaging, both physically and mentally.
“At a certain point, stress becomes toxic,” he said. “Chronic stress, like the stress that comes from living in abject poverty or being abused, can have very bad health and psychological consequences. It affects everything from your immune system, to emotional regulation, to brain functioning. Not all stress is good stress.”
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