A calculated, aggregated measure representing the overall systemic burden of pro-inflammatory signaling molecules (cytokines), such as Interleukin-6 (IL-6), Tumor Necrosis Factor-alpha (TNF-α), and high-sensitivity C-Reactive Protein (hs-CRP). This index serves as a quantitative biomarker of chronic, low-grade inflammation, a silent driver of many age-related and metabolic disorders. Monitoring this index is critical for assessing the effectiveness of anti-inflammatory interventions.
Origin
The term is a clinical and research construct combining the biological class of signaling proteins, ‘cytokines,’ with the mathematical concept of an ‘index’ to provide a single, interpretable value. ‘Inflammatory’ specifies the functional role of these molecules in the immune response. It reflects a shift toward measuring systemic immune dysregulation.
Mechanism
The index is derived from the quantitative measurement of multiple circulating inflammatory mediators, often assessed via highly sensitive immunoassays. These cytokines are produced by immune cells, adipocytes, and other tissues in response to various stressors, including dysbiosis and chronic psychological stress. An elevated index indicates sustained activation of the innate immune system, which can disrupt hormonal signaling and accelerate cellular aging.
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