Roseto is a small Italian-American community in east-central Pennsylvania. This fifteen-year study drawing on medical histories, physical examinations, and laboratory tests, compared a large sample of Rosetans to inhabitants of two neighboring communities, Bangor and Nazareth, and followed up this research with a sociological study of the three communities.

"The lesson the Roseto experience offers American is that the thwarting of their biological need for social cohesion, community and emotional security is doing them tremendous harm--and that they need, urgently, to find distinctly American ways to share their lives with one another in warm, supporting communities."--The Baltimore Sun