This study was conducted to evaluate the effectiveness of spiritual therapy on depression, anxiety, and stress in hemodialysis patients referred to the dialysis ward of the special diseases center of Birjand in 2019 - 2020. The results of the present study showed that the mean score of depression was significantly lower immediately and three months after the intervention in the patients of the experimental group than in the control group. Accordingly, spiritual therapy is effective in reducing depression in hemodialysis patients. Loureiro et al. (
21), in examining the effect of spirituality on the mental health of patients under hemodialysis, concluded that spirituality has a positive and significant effect on reducing depression in patients. The results of a study by Moritz et al. (
22) suggest that spiritual content, including spiritual awareness of self-forgiveness, compassion, appreciation, and daily life Acceptance, reduces depression. In addition, the results of studies by Cha et al. (
23), Rentala et al. (
24), and Hourani et al. (
25) also indicate the effect of spirituality on patient depression (
23-
25), which is consistent with the present study findings. Spirituality is one of the dimensions of human beings that shows the connection and integration of the individual with the universe. Communication and integration give people hope and meaning and bring them beyond the boundaries of time, place, and material interests and play an important role in improving depression (
26). Spiritual interventions act by changing patients’ attitudes toward life or illness. In other words, in cognitive assessments of the patient under the influence of personal beliefs and values such as self-control and religious beliefs, stressful factors are determined and then appropriate treatment strategies are used. Spirituality and religious beliefs and practices are effective in adapting patients to existing conditions by finding life meaning (
27). Accordingly, spiritual therapy can fill a person’s spiritual gaps and reduce depression (
28,
29).
The results of the present study show that the mean score of anxiety immediately and three months after the intervention in patients in the experimental group is significantly lower than the control group. Accordingly, spiritual therapy is effective in reducing the hemodialysis patient’s anxiety.
Kiani et al. (
16) concluded that spiritual therapy reduces the average anxiety score of cancer patients. In this regard, the results of the study of Boscaglia et al. (
30) suggest that spiritual therapy has a positive and significant effect on reducing anxiety in women with cancer. Despite the differences in the statistical community, these results are consistent with the present study findings. In addition, the results of studies by Chaar et al. (
31) and Sankhe et al. (
32) also indicate the spirituality effect on patients’ anxiety, which is consistent with the present study findings. According to the present study results and the results of studies conducted in this field, it can be stated that spiritual therapy is one of the important methods in anxiety disorders treatment. Believe in God and trust in Him creates a security sense in the anxious person, which provides the ground for reducing the negative perception of the threat and assessing the danger, especially in situations that are uncontrollable or unpredictable. Because one considers world events to be in the possession of an active and wise leader. He believes that world events are based on wisdom and that all things happen by the will of God (
33). So, this mentality can reduce the threat feeling in an anxious person.
The present study results showed that the mean stress score immediately and three months after the intervention in patients in the experimental group was significantly lower than the control group. Accordingly, spiritual therapy is effective in reducing hemodialysis patients’ stress. Kiani et al. (
16) concluded that spiritual therapy has an effect on the mental health of cancer patients and reduces the average stress score of patients. In addition, the studies of Kucuk Alemdar et al. (
34), and Rowold (
35) also demonstrate the spirituality effect on patient stress, which is consistent with the present study findings. People manage their stress based on available resources and through a variety of coping methods. According to this viewpoint, beliefs provide important cognitive assessments to the people, and therefore spirituality can help a person to evaluate negative events in a different way. Thus, spirituality creates a stronger control sense and help to psychological adjustment (
15). In other words, for people who use spiritual mechanisms, their immune systems work better and cope with more effective coping strategies such as reassessment and problem-solving with greater psychological stress, and ultimately reduce their stress (
36).