It is now widely recognized that research on human health requires more than a focus on human biology and disease entities. Lifestyles, attitudes, stress, education, income--all are now understood to contribute to the spread of disease, the effectiveness of curative therapies, and the prevention of illness, as well as to good health and an enhanced sense of well-being. However, despite such developments and the rise of interdisciplinary research, there is still considerable debate about how best to conduct research and shape policies that insightfully integrate concepts and methods drawn from...