Association between systemic immune inflammation index and adolescent obesity in a cross-sectional analysis

Abstract Obesity is a prevalent health issue among adolescents, characterized by chronic low-grade inflammation, which increases the risk of developing various chronic diseases in the future. The systemic immune-inflammation index (SII) serves as an indicator of inflammation and immune response. Thi...

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Main Authors: Yu-zhen Zhang, Run-wei Ma, Suwas Bhandari, Juan Xie, Xiao-yu Zhang, Chao Xie, Hong Duan, Juan Meng, Qiong-yu Wu, Kai Liu, Bo Feng, Li-ming Cheng
Format: Article
Language:English
Published: Nature Portfolio 2025-02-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-025-91125-6
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Summary:Abstract Obesity is a prevalent health issue among adolescents, characterized by chronic low-grade inflammation, which increases the risk of developing various chronic diseases in the future. The systemic immune-inflammation index (SII) serves as an indicator of inflammation and immune response. This study conducted a cross-sectional analysis using data from the National Health and Nutrition Examination Survey (NHANES) from 2007 to 2016, including 5,676 participants. A multivariate logistic regression model, Generalized Additive Models (GAM), and subgroup analysis were used to examine the relationship between obesity and SII. The multivariate logistic regression results revealed a significant positive correlation between log SII and adolescent obesity (1.254 [1.024–1.537]). Furthermore, the risk of obesity increased with higher quartiles of SII. Subgroup analysis and interaction tests showed that this positive association persisted across various factors, including female gender, race (Non-Hispanic White and Mexican American), non-hyperlipidemia, normal white blood cell count, and PIR < 1. Additionally, a U-shaped relationship between log SII and obesity was observed, with a turning point at 6.410. The findings suggest that an increase in the systemic immune-inflammation index is significantly associated with obesity in adolescents. However, further validation through large-scale prospective studies is needed.
ISSN:2045-2322