Dr. Sun’s primary research interests are to identify and examine biomedical risk factors, including dietary biomarkers, in relation to type 2 diabetes, obesity, and cardiovascular disease. His research is primarily based on a few large-scale cohort studies including the Nurses’ Health Study I and II and the Health Professionals Follow-up Study. Dr. Sun is also interested in the role of environmental pollutants, especially those from dietary sources, in the etiology of obesity and type 2 diabetes.