Is bullying healthy for the bully?

Yesterday, I wrote a story for National Geographic‘s website about a new study regarding bullying. The researchers had looked at a biomarker for stress, C-reactive protein, and found that young adults who had been bullies when younger had lower levels of CRP than anyone else. So do bullies get health benefits from their malicious actions? Maybe not, scientists told me. While CRP can be a harbinger of bad things, such as metabolic disease, the differences in CRP levels may instead reflect something in the underlying biology of people who become bullies rather than better health. Maybe bullies really are just different from the rest of us.