Can being bullied change your brain?

Scientists have long known that physical and sexual abuse in early childhood can alter brain development. But new research is showing that older kids who have been abused emotionally by their peers tend to share certain abnormalities in the corpus callosum. That's right: Being bullied is associated with an altered brain structure. The assumption here is that the bullying is causing the change, and not the other way around. It's also not totally clear what the external results of those internal changes might be—although researchers think it could have something to do with the higher rates of depression bullied kids also experience.