Dr. Cummings training and research interests are in the study of health related behaviors, especially tobacco use prevention and cessation. His research is primarily population based with a focus on smoking cessation, consumer risk perceptions, the impact of cigarette design on smoking behaviors, and the evaluation of public policies on tobacco use behaviors. Recognized internationally for his work in tobacco epidemiology and smoking cessation, Dr. Cummings has guided global public policy and regulations in the marketing and distribution of nicotine products. This work has involved designing studies to understand factors involved in predicting uptake and cessation of tobacco use and the testing of interventions to alter tobacco use behaviors at both the individual and population level.