James Colgrove is a professor of sociomedical sciences at Columbia University. He is the author of State of Immunity: The Politics of Vaccination in Twentieth-Century America.

Milesh Hamlai helped increase access to and use of medical treatments for mental illness in Ahmedabad, India, by creating the Dava and Dua Program, which seeks to bridge the gap between modern medicine and faith healing.

Carlos Eduardo Amaral is a professor of collective health at the University of Campinas in Brazil. He has studied how patients access mental health care in Brazil, which includes seeking faith healing or speaking with a religious leader.

Ricardo Araya directs the Centre for Global Mental Health at King’s College London. He specializes in developing affordable treatments to mental disorders and implementing them in resource-poor countries.

Hamada Halid Altalib is the editor-in-chief of the Journal of Muslim Mental Health and one of the founding directors of the Institute of Muslim Mental Health. He is an associate professor of neurology and psychiatry at Yale University.

Debra Flics is a psychotherapist in New York City. She has written about why some efforts to use Buddhist practices to treat mental illness are misguided.

Jon Kabat-Zinn is the executive director of the Center for Mindfulness in Medicine, Health Care and Society at the University of Massachusetts Medical School. He also leads the school’s stress reduction clinic and offers training on mindfulness and stress reduction.

Katie Sorrell is the interfaith wellness director for the University of California, San Diego’s Center for Community Health. In 2017, the center partnered with local Muslim groups to reduce food waste during Ramadan.