Leonard Syme, a professor of epidemiology at the University of California at Berkeley, indicates the importance of social ties and social support systems in relationship to mortality and disease rates. He points to Japan as being number one in the world with respect to health and then discusses the close social, cultural, and traditional ties in that country as the reason. He believes that the more social ties, the better the health and the lower the death rate. Conversely, he indicates that the more isolated the person, the poorer the health and the higher the death rate. Social ties are good preventative medicine for physical problems and for mental-emotional-behavior problems.