Table 1.

Action of estrogens on several immune parameters depending on their concentrations.

ESTROGENS
HIGH	LOW
Increased Treg	Decreased Treg
Th2 differentiation	Th1 differentiation
Reduced monocytes secretion of IL-1β, IL-6 and TNF	Increased monocytes secretion of IL-1β, IL-6 and TNF
Increased chemotactic capacity of neutrophils	Reduced chemotactic capacity of neutrophils
Mitigated cytotoxicity of natural killer (NK) cells	Stimulated cytotoxicity of natural killer (NK) cells
Increased differentiation and activation of dendritic cells	Reduced action on dendritic cells