Traditional medical science has kept the mind separate from the body.
Now people realize that the psyche and the soma are constantly
interacting. And psychoneuroimmunology is the new evolved science that
describes such kind of interactions. Many studies show that
psychological stress (acute, brief naturalistic and chronic) has immune
modulatory activity. In this book a typical
psycho-neuro-endocrine-immune network has been shown. From this network
Corticotrophin Releasing Factor (CRF), Adrenocorticotrophic Hormone
(ACTH), Glucocorticoids (GC), β-endorphin and Met-enkephalin are found
as important endocrine components, and T cells, B cells,
monocytes/macrophages, Natural Killer(NK) cells and their cytokines that
is Tumor Necrosis Factor-α (TNF-α), Interferon Gamma (IFN-γ) and
interleukins such as IL-1, IL-2, IL-4, IL-6, IL-10, IL-12 etc. are found
as important immune components. Finally, it has been shown that, acute,
brief naturalistic and chronic stress have different immune modulatory
activities which are harmful to one's homeostasis, and relaxation can
help to maintain that homeostasis.