Dr. Chaiton’s work is focused on the social and psychosocial factors influencing tobacco use from a population health perspective. In particular, he is interested in how the dynamics of smoking are influenced by personal factors such as addiction and depression and environment factors such as tobacco policy and social environment. At OTRU, he is the project lead for the Ontario Tobacco Survey, a population representative longitudinal cohort study and is the principal investigator on a Canadian Institutes of Health Research funded study on policy options for addressing tobacco retail availability. His thesis work focused on the relationship of depression and smoking among adolescents.