Insomnia is a common problem, affecting individuals' health and quality of life. Among several therapies used to treat this condition, spiritual interventions are suggested to have beneficial outcomes on sleep disturbances. Nevertheless, a systematic compilation of the evidence available is still needed in the literature in order to scientifically investigate the topic. To examine the most common spiritual interventions proposed to treat sleep disorders and to assess the scientific evidence of these interventions. This is a scoping literature review conducted by independent researchers on the following databases: PubMed, SCOPUS, Web of Science, Cochrane Library and OpenGrey. A boolean expression was used, and all studies published in the last 5 years investigating the role of spiritual or religious interventions on insomnia were included. From a total of 3257 articles retrieved in our search, ten studies were included in the final analysis. There is a wide array of techniques used to treat insomnia or the mental disorders associated with insomnia, such as mantra, yoga, mindfulness, praying/meditation, daily spiritual experiences, psycho-religious training and intervention. The included studies showed a positive influence of spiritual/religious interventions on insomnia directly and indirectly. However, there is a scarcity of clinical trials and most studies have small sample sizes and used only subjective measures, resulting in a low evidence. The results of the present review point to a promising role of spirituality and religion on better sleep outcomes, particularly in the improvement in insomnia. However, the heterogeneity and the quality of these studies suggest caution while interpreting these findings. More clinical trials are needed in this area to provide a recommendation of these methods in clinical practice.
Keywords: Complementary therapies; Primary insomnia; Religion; Sleep disorder; Spirituality.
© 2020. Springer Science+Business Media, LLC, part of Springer Nature.