Bullying is the systematic abuse of power and defined as aggressive behavior or intentional harm doing by peers that is carried out repeatedly, and involves an imbalance of power between the victim and the bully. One in 3 children report having been bullied at some point in their lives, and 10 - 14% experience chronic bullying lasting for more than six months.

Longitudinal research indicates that children who were victims of bullying are at higher risk for common somatic problems, internalizing problems and anxiety or depression disorder, psychotic symptoms and are at highly increased risk to self-harm or think about suicide in adolescence [1]. The mental health problems of victims and bully/victims remain in adulthood. Indeed, we showed that peer bullying in childhood has more adverse effects on diagnosed anxiety and depression disorders than being physically or sexually abused or neglected by parents. Victims also report to have more trouble with making or keeping friends in adulthood and were less likely to live with a partner and have social support. In contrast, bullies had no increased risk for any mental or general health problems, were healthier than their peers, emotionally and physically.

Sadly, many bullied children suffer in silence. To prevent dropping out of school, violence against oneself (e.g. self-harm) and reduce mental and somatic health problems, it is imperative for health practitioners, families and schools to address bullying.