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Bullying
mungkin memiliki konsekuensi kesehatan jangka panjang
Bullying
may have long-term health consequences
Date:
May 12, 2014
Source:
Duke Medicine
Summary:
Bullied children may experience chronic, systemic
inflammation that persists into adulthood, while bullies may actually reap
health benefits of increasing their social status through bullying, according
to researchers.
..................
Bullied children may experience chronic, systemic
inflammation that persists into adulthood, while bullies may actually reap
health benefits of increasing their social status through bullying, according
to researchers at Duke Medicine.
The study,
conducted in collaboration with the University of Warwick, the University of
North Carolina at Chapel Hill and Emory University, is published online in the Proceedings
of the National Academy of Sciences the week of May 12, 2014.
"Our
findings look at the biological consequences of bullying, and by studying a
marker of inflammation, provide a potential mechanism for how this social
interaction can affect later health functioning," said William E.
Copeland, Ph.D., associate professor of psychiatry and behavioral sciences at
Duke University School of Medicine and the study's lead author.
Earlier
studies have suggested that victims of childhood bullying suffer social and
emotional consequences into adulthood, including increases in anxiety and
depression. Yet, bullied children also report health problems, such as pain and
illness susceptibility, which may extend beyond psychological outcomes.
"Among
victims of bullying, there seems to be some impact on health status in
adulthood," Copeland said. "In this study, we asked whether childhood
bullying can get 'under the skin' to affect physical health."
Copeland and
his colleagues used data from the Great Smoky Mountains Study, a robust,
population-based study that has gathered information on 1,420 individuals for
more than 20 years. Individuals were randomly selected to participate in the
prospective study, and therefore were not at a higher risk of mental illness or
being bullied.
Participants
were interviewed throughout childhood, adolescence and young adulthood, and
among other topics, were asked about their experiences with bullying. The
researchers also collected small blood samples to look at biological factors.
Using the blood samples, the researchers measured C-reactive protein (CRP), a
marker of low-grade inflammation and a risk factor for health problems
including metabolic syndrome and cardiovascular disease.
"CRP
levels are affected by a variety of stressors, including poor nutrition, lack
of sleep and infection, but we've found that they are also related to
psychosocial factors," Copeland said. "By controlling for
participants' pre-existing CRP levels, even before involvement in bullying, we
get a clearer understanding of how bullying could change the trajectory of CRP
levels."
Three groups
of participants were analyzed: victims of bullying, those who were both bullies
and victims, and those who were purely bullies. Although CRP levels rose for
all groups as they entered adulthood, victims of childhood bullying had much
higher CRP levels as adults than the other groups. In fact, the CRP levels
increased with the number of times the individuals were bullied.
Young adults
who had been both bullies and victims as children had CRP levels similar to
those not involved in bullying, while bullies had the lowest CRP -- even lower
than those uninvolved in bullying. Thus, being a bully and enhancing one's
social status through this interaction may protect against increases in the
inflammatory marker.
While
bullying is more common and perceived as less harmful than childhood abuse or
maltreatment, the findings suggest that bullying can disrupt levels of
inflammation into adulthood, similar to what is seen in other forms of
childhood trauma.
"Our
study found that a child's role in bullying can serve as either a risk or a
protective factor for low-grade inflammation," Copeland said.
"Enhanced social status seems to have a biological advantage. However,
there are ways children can experience social success aside from bullying
others."
The
researchers concluded that reducing bullying, as well as reducing inflammation
among victims of bullying, could be key targets for promoting physical and
emotional health and lessening the risk for diseases associated with inflammation.
In addition
to Copeland, study authors include E. Jane Costello of Duke, Dieter Wolke and
Suzet Tanya Lereya of the University of Warwick in the United Kingdom, Lilly
Shanahan of the University of North Carolina at Chapel Hill and Carol Worthman
of Emory University.
The study
was supported by the National Institute of Mental Health (MH63970, MH63671,
MH48085 and MH080230), the National Institute on Drug Abuse (DA/MH11301,
DA023026), the Brain & Behavior Research Foundation, the William T. Grant
Foundation and the Economic and Social Research Council (ES/K003593/1).
Story
Source:
The above
story is based on materials provided by Duke Medicine.
Note: Materials may be edited for content and length.
Journal
Reference:
- William E. Copeland, Dieter Wolke, Suzet Tanya Lereya, Lilly Shanahan, Carol Worthman, and E. Jane Costello. Childhood bullying involvement predicts low-grade systemic inflammation into adulthood. PNAS, May 12, 2014 DOI: 10.1073/pnas.1323641111
Cite This
Page:
Duke Medicine. "Bullying may
have long-term health consequences." ScienceDaily. ScienceDaily, 12 May
2014. <www.sciencedaily.com/releases/2014/05/140512154854.htm>.
