Background and Objective: Near-death experiences (NDEs) greatly change the lives of Near-death experiencers (NDErs); however, the influence of the knowledge of these experiences on other people is unclear. Therefore, the present study aimed to investigate the effects of knowledge of NDEs on various aspects of life and the sleep quality of those without NDEs. Methods: The research population consisted of people aged 12–60 years living in a number of different cities in Iran during 2021. A total of 766 out of 800 individuals who met the inclusion criteria completed the self-report questionnaires. Also, 466 respondents (60.8%) were women. Results: The findings of the study indicated that 57.6%, 58.1%, 72.1%, 79.6%, and 70.9% of the respondents acquired knowledge about NDEs through reading books and articles, watching movies and clips, using social media and networks, listening to lectures, and chatting with friends, respectively. Data analysis showed that 40% of the respondents reported a drastic change in their views or feelings and 57% experienced positive effects in their lives after learning about NDEs. Overall, the data in this study confirmed that most individuals were profoundly affected after exposure to NDEs. Conclusion: Knowledge of NDEs improves the quality of life, mental health, sleep quality, and the understanding of the life and death of most individuals without NDEs. Although there are some changes that are not necessarily positive and in some cases changes have been associated with negative consequences, later in this paper, the relevant associations and cautions are discussed.
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