IL-6 is a member of the IL-6 family of cytokines and plays an important role in the cytokine network as an acute inflammation regulator. These cytokines have roles in human metabolism, autoimmune cell differentiation, disease treatment, and more. In regards to the inflammation, IL-6 has both anti-inflammatory and pro-inflammatory effects. IL-6 has effects on B lymphocytes, T lymphocytes, hepatocytes, hematopoietic stem cells, the occurrence of immune abnormalities, and the occurrence/development of cardiovascular diseases.