ArticleNutrition & metabolism2026
The link between dietary inflammation and hyperuricemia: what is the mediating role of insulin resistance and abdominal obesity?
Article in Nutrition & metabolism, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundWe investigated the serial mediating roles of insulin re-sistance (IR) and abdominal obesity in the association between the Dietary Inflamma-tory Index (DII) and hyperuricemia (HUA), and whether abdominal obesity moder-ated this pathway.
methodsWe analyzed data from 8,232 adults in the National Health and Nutrition Examination Survey (2007-2016). The triglyceride-glucose (TyG) index served as a surrogate for IR. We employed serial mediation and moderated me-diation models.
resultsHigher DII was associated with increased HUA risk. This re-lationship was serially mediated through the pathway: DII → TyG index → abdominal obesity → HUA. This indirect pathway accounted for 52.3% of the total effect, with abdominal obesity being the most potent mediator (contribution: 31.0%). Importantly, the mediating effect of the TyG index was significant only in individuals with a normal waist circumference (β = 0.0016, 95% CI: 0.0006, 0.0026) but was attenuated to non-significance in those with abdominal obesity.
conclusionOur findings suggest that IR and abdominal obesity may serially mediate the link between a pro-inflammatory diet and HUA. The me-diating role of IR appears to be prominent in individuals without abdominal obesity, whereas in those with obesity, obesity itself becomes the dominant factor. However, given the cross-sectional design, causal inferences cannot be drawn. These findings support developing stage-specific HUA prevention strategies, targeting insulin sensitivity or weight control based on an individual's obesity status.
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