CRP-triglyceride-glucose index and incident depressive symptoms in older ELSA adults
In an eight-year ELSA follow-up of 2,813 depression-free adults aged 50 and older, higher baseline CRP-triglyceride-glucose index was associated with a higher risk of incident depressive symptoms; this is an association, not proof of cause. [1]
Automatic summary · not editorially reviewed
The key findings
The analysis included 2,813 depression-free ELSA participants aged 50 or older, followed through Wave 8. [1]
During follow-up, 136 participants developed incident depressive symptoms. [1]
After full adjustment including BMI, each 1-SD higher baseline CTI was associated with higher risk of incident depressive symptoms (HR 1.253; 95% CI 1.002-1.479). [1]
The source at a glance
- Study type / format
- Prospective cohort study (abstract)
- Population / context
- 2,813 depression-free adults aged 50 and older in the English ELSA cohort
- Summary based on
- Study abstract
- Original publication
- July 9, 2026
Baseline index in 2,813 depression-free ELSA adults
The study asked whether a metabolic biomarker could predict the onset of depression in older adults. It used data from 2,813 participants in ELSA, a nationally representative cohort in England, who were aged 50 or older and free of depression at baseline. The CRP-triglyceride-glucose index (CTI) combines C-reactive protein with the triglyceride-glucose index and was measured at baseline from fasting blood biomarkers. The authors suggest it may capture inflammatory-metabolic dysregulation better than either marker alone.
Supporting source [1]
136 incident cases over follow-up to Wave 8
Depressive symptoms were assessed with the CES-D-8 scale, and follow-up ran through Wave 8. During follow-up, 136 participants developed incident depressive symptoms. Cox proportional hazards models estimated hazard ratios. After full adjustment including BMI, each 1-standard-deviation increase in baseline CTI was associated with a higher risk of incident depressive symptoms (HR = 1.253; 95% CI: 1.002-1.479; p = 0.035). Multiple-imputation sensitivity analyses for missing data gave directionally consistent results.
Supporting source [1]
Prospective association, not a causal or clinical claim
The authors conclude that higher baseline CTI was prospectively associated with an increased risk of incident depressive symptoms in this English cohort aged 50 and older. They propose CTI as a potentially scalable biomarker for identifying older adults at elevated risk. The abstract reports an association only; it does not show that CTI causes depressive symptoms, and it does not report a clinical benefit from testing or treatment.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. The design is a prospective cohort, so the reported link is an association, not causation. The abstract does not report follow-up duration in years beyond the eight-year framing, effect sizes for subgroups, or clinical utility of CTI testing.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Guo M, Cai M, Dong H, Zhao Z, Zheng K. · europepmc.org · July 9, 2026