*The following is excerpted from an online article posted on EurekAlert.
A new study led by the University of Ottawa epidemiologist Dr. Ian Colman suggests non-suicidal self-injury--behaviors like cutting oneself without the intent to die--may be contagious among teenagers, who are more likely to harm themselves when they know someone who has.
The study, published in the peer-reviewed journal Acta Psychiatrica Scandinavica, used 2014 data collected from over 1,400 Ontario teenagers between the ages of 14-17. Dr. Colman and his team focused on the answers to the question, "Has a friend of yours ever hurt themselves without the intention to die?" A positive response saw the respondent two to three times as likely to answer 'Yes' to the question of whether they have thought about, or done, the same.
These results are of concern, especially during the COVID-19 pandemic, because, apart from being a sign of acute distress, non-suicidal self-injury is a predictor of later suicidal behavior and more widespread.
"Non-suicidal self-injury is much more common than suicide attempts--twice as common in this study--and many, many times more common than death by suicide," says Dr. Colman, an Associate Professor in the Faculty of Medicine and holder of the Canada Research Chair in Mental Health Epidemiology.
Dr. Colman's study builds on previous research showing teens who are exposed to suicide among their peers are more than twice as likely to demonstrate suicidal behavior or harbor suicidal thoughts than those who are not exposed. This sort of communication of ideation and behavior is a form of contagion, and its spread can be tracked by epidemiologists just as physically communicable diseases are studied.
Source: EurekAlert!
https://www.eurekalert.org/pub_releases/2020-10/uoo-uoo100120.php
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