A new study suggests that teens with a history of concussions are more than three times as likely to suffer from depression than those who have never had a concussion. 'What this study suggests is that teens who have had a concussion should be screened for depression' lead study author Sara Chrisman MD a pediatrician at Seattle Children’s Hospital said. Concussion considered a mild traumatic brain injury can also have serious psychological effects. Most prior research on these psychological effects has focused on adults. However many teens experience concussions through sports injuries or accidents and less is known about long-term complications in