Records of Reiki’s use are growing as Western medicine seeks ways to provide care in a holistic manner. Reiki is currently being offered not only for management of physical pain but emotional pain as well. According to a survey conducted by Health Forum, a subsidiary of the American Hospital Association, 42 percent of the responding hospitals in the United States and 70 percent of the responding hospitals in Canada offer complementary and alternative treatments including Reiki and healing touch. Reiki is used in the treatment of anxiety, depression, trauma, stress and memory loss, as well as in palliative and oncological care.

Reiki is offered in hospitals, clinics and hospice settings. For example, the Integrative Medicine Department of Memorial Sloan Kettering Hospital offers and teaches Reiki to patients and caregivers. In a 2010 study conducted by Yale University and published in the Journal of the American College of Cardiology, researchers Rachel Friedman, Matthew Burg, Pamela Miles, Forrester Lee and Rachel Lampert found that 20 minutes of Reiki significantly improved mood and variable heart rate following a heart attack. This was above and beyond control for other variables.