In summary, several in vitro and in vivo studies demonstrate that ethanol modulates the function of innate immune cells (monocytes and DCs) in a dose and time dependent manner (Figure 1). Acute high dose exposures inhibit whereas long-term treatments stimulate proinflammatory cytokine production. In addition, in vivo consumption of moderate amounts enhances phagocytosis and reduces inflammatory cytokine production whereas chronic consumption of large doses inhibits phagocytosis and production of growth factors.