Tyler J. VanderWeele is a Professor of Epidemiology at Harvard University’s T.H. Chan School of Public Health in the Departments of Epidemiology and Biostatistics. He is also director of the Program on Integrative Knowledge and Human Flourishing at Harvard’s Institute of Quantitative Social Science. Professor VanderWeele’s research focuses on epidemiologic methods and how to distinguish between association and causation in observational research. He is currently applying this work throughout the biomedical and social sciences including to the study of the role of religion and spirituality in end-of-life cancer care, and to examining the mechanisms governing associations between religious participation and population health.