Reiki is an ancient healing method with roots in both Chinese Medicine and Christian healing. It is a treatment used by individuals as an alternative and complement to Western medical treatment. Reiki has increased in popularity over the past decade, but remains understudied. Methodological and philosophical reasons for why it is difficult to conduct research on the efficacy of Reiki are discussed. The reasons for the increased success of Reiki as an alternative and complementary healing method in the Western world are addressed, as well as the practice of Reiki as a healing method for self and others.