Faith and spirituality are of great importance to many Americans and to people around the world. Examining the diversity of religious belief in the United States and around the world and how those beliefs influence social and political opinions, as well as how faith affects quality of life measures, has become an important avenue of inquiry for NORC. The National Congregations Study documents the work, programs, and activities of America’s religious congregations. The Landmark Spirituality and Health Survey gathered baseline data— including information about subjects’ religious beliefs and practices and biomeasures such as weight and blood pressure—that will allow researchers to examine the connection between faith and health.