Context: The impact of spirituality on recovery from disease and the promotion of health is a topic that has received the attention of many researchers and scholars around the world. Spirituality is considered one of the natural capacities of humans that has positive effects on individuals' health. The aim of this study was to review the impact of spirituality on people's health and to discuss the relationship between health and belief in spiritual powers. Evidence Acquisition: This study comprised a non-systematic narrative review of original and reliable scientific articles on spirituality published from 1972 to 2014. The research strategy was carried out using electronic databases such as Scopus, PubMed, and Google Scholar. Considering the goal of the research, 51 articles were selected and reviewed. Results: Most studies indicated the positive impact of spirituality on people's health. Recourse to spiritual powers leads to reductions in anxiety and concern among patients and their families, and allows people to more easily accept and cope with their health disorders. Conclusions: To date, most of the studies conducted on the topic have confirmed the positive impact of religious beliefs and other spiritual approaches on health and the course of recovery from acute and chronic diseases. Based on these findings, medical personnel should turn their attention to the advantages of spirituality in relation to patients' treatment and acquaint patients and their families with such spiritual benefits.