Interleukin 6 (IL-6) is a cytokine that plays a crucial role in the immune response. It is produced by various cells, including macrophages, T cells, and endothelial cells. IL-6 is involved in inflammation, immune regulation, and hematopoiesis. In the context of gynecology, IL-6 has been found to be involved in several conditions and diseases that affect the female reproductive system.