Happiness and Immunity

Associations among central nervous, endocrine, and immune activities when positive emotions are elicited by looking at a favorite person.
from:ncbi.nlm.nih.gov
Recent studies on psychoneuroimmunology have indicated that positive psychological events are related to immune functions;
These results suggest that while an individual experiences positive emotions, the central nervous, endocrine, and immune systems may be interrelated and attraction for favorite persons may be associated with the activation of the innate immune function via the dopaminergic system