S. Leonard Syme, Ph.D., is Professor of Epidemiology and Community Health (Emeritus) at the University of California, Berkeley. His major research interest has been psychosocial risk factors such as job stress, social support and poverty. In doing this research, he has studied San Francisco bus drivers; Japanese living in Japan, Hawaii and California; British civil servants; and people living in Alameda County, California. He has been a visiting professor at universities in England and Japan. He was elected to the Institute of Medicine of the National Academy of Sciences and has received several honors related to his teaching and research, among them the Lilienfeld Award for Excellence in Teaching, the J.D. Bruce Award from the American College of Physicians for Distinguished Contributions in Preventive Medicine, and the University of California Distinguished Emeritus Professor Award. Dr. Syme is currently Principal Investigator of Health Research for Action Center which is attempting to empower people and communities using printed materials, television, and community resource development.