A three-decade study of 3,325 young people in Bristol, UK, found that kids that were bullied at age 10 had eight times the rate of depression in their teen years, and that it persisted for some into their adult years. Using detailed mood and feelings questionnaires and genetic information, researchers found that childhood bullying was strongly associated with depression. Bullied children had a greater risk of both limited depression occurrence and persistent depressive issues. Other risk factors found to be associated with depression in the children included anxiety and the mother’s postnatal depression.