Interleukin-6 (IL-6)

Interleukin-6 (IL-6) is a pro-inflammatory cytokine produced by various cells in response to infection, trauma, and inflammation. It plays a key role in the acute-phase response and chronic inflammation. Elevated IL-6 is associated with increased risk of cardiovascular disease, autoimmune conditions, and metabolic disorders. Lower levels are generally favorable for longevity.