In recent years, the literature on the relationship between religion and spirituality (R/S) and the health of cancer patients has been flourishing. Although most studies focus on mental health, many study the physical health of these individuals. In order to summarize the findings of these studies, we reviewed the most recent research on this subject using the PubMed and PsycInfo databases. The objective of this systematic review was to recognize the primary R/S variables studied in research on physical health in cancer contexts. We found that spiritual well-being was the most-researched variable in studies of these characteristics, followed by R/S struggles and other variables such as religious coping; religious commitment or practice; or self-rated R/S. In general, R/S seems to have a positive association with the physical health of cancer patients, although the results are quite heterogeneous, and occasionally there are no relationships or the association is negative. Our results may assist in improving interventions that include spirituality in clinical settings as well as the development of holistic approaches, which may have a positive impact on the quality of life and well-being of cancer patients.
Keywords: cancer; physical health; religion; spirituality; well-being.