Research on bereavement and grief has burgeoned in the past 20 years, with the publication of scores of research reports, reviews, and compendia. This report therefore serves as a road map to information identified in that time period as critical to understanding advances in research on bereavement and grief, with a focus on grief and health. It is intended to provide researchers, practitioners, decision makers, and funders with a broad overview of where the field is in the process of identifying a core body of knowledge and to guide readers to sources of more detailed information on core topics. The report identifies central current themes and theoretical approaches to the study of grief in general as well as major unresolved questions and disagreements in the field. It also is intended to provide readers with distilled and focused summaries of research on specific topics in research on bereavement and grief, focusing on the application of this research to health and the health care system. This report is descriptive, however, and is not intended to serve as a foundation for the development of clinical practice guidelines or prematurely force consensus or agreement on issues that merit further investigation. [This monograph was written with assistance from Tracy Marshall and Tess Miller.]