Reiki is a form of alternative medicine developed in 1922 by Japanese Buddhist Mikao Usui.
Since its beginning in Japan, Reiki has been adapted across varying cultural traditions. It uses a technique commonly called palm healing or hands-on-healing. Through the use of this technique, practitioners believe that they are transferring “universal energy” through the palms of the practitioner, which they believe encourages healing.
Reiki is considered pseudoscience
 It is based on qi (“chi”), which practitioners say is a universal life force, although there is no empirical evidence that such a life force exists.
 Surveys of the clinical research do not show Reiki to be effective as a medical treatment.
 The American Cancer Society,
 Cancer Research UK,
 and the National Center for Complementary and Integrative Health
 state that Reiki should not be a replacement for conventional treatment of diseases such as cancer, but that it may be used as a supplement to standard medical treatment.