Religious and spiritual factors are increasingly studied in psychiatric research. This review explores the relationship between religion/spirituality and mental health, focusing on depression, suicide, anxiety, psychosis, and substance abuse. While religion can provide comfort, hope, and meaning, it may also be linked to neurotic and psychotic disorders. Recent studies show that religious coping is widespread, with many patients using religion to manage stress and mental health issues. Research indicates that religious involvement is generally associated with better coping, less depression, suicide, anxiety, and substance abuse. However, religious beliefs can sometimes exacerbate mental health problems, especially in cases of religious conflict or when individuals feel punished by a higher power. In psychotic disorders, religious delusions are common but may not always be harmful. Studies suggest that religious involvement can improve long-term prognosis in psychotic disorders. Religious beliefs and practices also play a role in reducing substance abuse, with religious individuals less likely to engage in harmful behaviors. Overall, while religion can be a valuable resource for mental health, it is important for clinicians to understand its role in patients' lives and recognize when it may be detrimental. The review highlights the complex relationship between religion, spirituality, and mental health, emphasizing the need for further research and clinical awareness.Religious and spiritual factors are increasingly studied in psychiatric research. This review explores the relationship between religion/spirituality and mental health, focusing on depression, suicide, anxiety, psychosis, and substance abuse. While religion can provide comfort, hope, and meaning, it may also be linked to neurotic and psychotic disorders. Recent studies show that religious coping is widespread, with many patients using religion to manage stress and mental health issues. Research indicates that religious involvement is generally associated with better coping, less depression, suicide, anxiety, and substance abuse. However, religious beliefs can sometimes exacerbate mental health problems, especially in cases of religious conflict or when individuals feel punished by a higher power. In psychotic disorders, religious delusions are common but may not always be harmful. Studies suggest that religious involvement can improve long-term prognosis in psychotic disorders. Religious beliefs and practices also play a role in reducing substance abuse, with religious individuals less likely to engage in harmful behaviors. Overall, while religion can be a valuable resource for mental health, it is important for clinicians to understand its role in patients' lives and recognize when it may be detrimental. The review highlights the complex relationship between religion, spirituality, and mental health, emphasizing the need for further research and clinical awareness.