Systemic Immune-Inflammation Index and Depressive Symptoms in US Adults: Implications for Immunomodulatory Interventions—A Cross-Sectional Study from NHANES 2005–2020
Inflammatory responses play a crucial role in the pathogenesis of depression. The Systemic Immune Inflammatory Index (SII) is a novel composite inflammatory marker that integrates the counts of neutrophils, lymphocytes, and platelets. However, the relationship between it and depressive symptoms is still not very clear at present. This exploratory study conducted in this article aims to investig...