Stress is one of the main neuroscientific issues of our time. However, we have little knowledge of the neurological processes of stress. During the past decade studies have shown that in addition to the genetic factors, stress palys a major role in mental and psychosomatic diseases. Severe, chronic and uncontrolled stresses cause some changes in monoaminergic system, and through neural peptides cause changes in the plasticity of these systems. It is necessary to study the effects of other factors such as genetic, culture and geographic in this brain process as well.

The present study aimed to investigate the role of religious beliefs on definition and tolerance of stressful life event. Subjects were 100 volunteer (50 in each group) males with an age range of 12-25 from Iran and other countries who were selected randomly. We used analyzed using t-test and ANOVA (Analysis of variance). The results showed that stressful life events differed in two groups and results of other studies. Furthermore, tolerance of stress as measured by percent of psychosomatic disease differed significantly in these two groups. The results indicated that religious beliefs increase the tolerance of stress.