Ichiro Kawachi is the John L. Loeb and Frances Lehman Loeb Professor of Social Epidemiology and the chair of the Department of Social and Behavioral Sciences at the Harvard School of Public Health. He is a co–editor in chief, with S.V. Subramanian, of the international journal Social Science & Medicine. He is an elected member of the Institute of Medicine of the U.S. National Academy of Sciences and a recipient of a Robert Wood Johnson Investigator Award in Health Policy Research.