The immune system is the defender of human health,whose dysregulation is the source of various diseases.Re-duced immune defense and immune surveillance capabilities lead to difficulties in removing pathogens and malignant cells,thus increasing morbidity and mortality risk.Stress is a major factor in the decline of the immune system.In past studies,it has been demon-strated both in animal and humans that stress increases the levels of neuroendocrine hormones in the body,particularly glucocorticoids and catecholamines.Through the action of these stress hormones,stress has a number of detrimental...