 His current research concentrates on how exercise generates new brain cells in people with Alzheimer's Disease, stroke, Fetal Alcohol Syndrome Disorder (FASD) or Attention Deficit Hyperactivity Disorder (ADHD), particularly in the hippocampus.Christie has more recently been involved in mild traumatic brain injury research at the University of Victoria and is the principal investigator for the Victoria site of a CIHR funded cross-Canada pediatric concussion study (primary investigator