Sleep

HDL-related inflammatory biomarkers are associated with sleep disorders: Evidence from a cross-sectional NHANES study.

TL;DR

This study revealed a linear association between HDL-related inflammatory biomarkers and sleep disorders, with sex and marital status modifying the associations of all 4 indices with sleep disorders, and these biomarkers also associated with sleep duration.

Key Findings

Higher levels of all four HDL-related inflammatory biomarkers (MHR, NHR, LHR, PHR) were positively associated with prevalence of sleep disorders in fully adjusted models.

  • MHR: OR = 1.33; 95% CI: 1.11-1.60.
  • NHR: OR = 1.25; 95% CI: 1.04-1.49.
  • LHR: OR = 1.24; 95% CI: 1.05-1.48.
  • PHR: OR = 1.18; 95% CI: 1.00-1.39.
  • Multivariable logistic regression on 23,045 individuals from NHANES 2005-2014.

The relationships between the inflammatory biomarkers and the likelihood of sleep disorders were linear rather than nonlinear.

  • Restricted cubic spline (RCS) models were used to assess nonlinearity.
  • All p for nonlinearity were >0.05.

Sex and marital status significantly modified the associations between all four indices and sleep disorders.

  • Subgroup analyses showed all p for interaction <0.05 for sex and marital status across all 4 indices.

Both short and long sleep duration were associated with elevated NHR compared with the recommended sleep duration.

  • Reference group: recommended sleep duration of 7-9 h/day.
  • Short sleep (<7 h/day) and long sleep (>9 h/day) groups had elevated NHR levels.
  • The authors conclude that the inflammatory biomarkers were associated with sleep duration.

The study used a large, nationally sourced cross-sectional sample and tested robustness with sensitivity analyses.

  • Data from NHANES 2005-2014; 23,045 individuals included.
  • Biomarkers: platelet-to-HDL ratio (PHR), lymphocyte-to-HDL ratio (LHR), neutrophil-to-HDL ratio (NHR), monocyte-to-HDL ratio (MHR).
  • Sensitivity analyses were used to examine robustness of the observed associations.
  • Cross-sectional design; the authors note prior studies of HDL-related inflammatory markers and sleep disorders were lacking.

What This Means

This study used survey data from over 23,000 U.S. adults (NHANES, 2005-2014) to examine whether markers that combine inflammation-related blood cells with HDL ("good") cholesterol are linked to sleep disorders. The four markers compared HDL levels with counts of monocytes, neutrophils, lymphocytes, or platelets. Higher values of all four were associated with greater odds of having a sleep disorder, even after accounting for other factors. The strongest link was for the monocyte-to-HDL ratio, with about 33% higher odds. The relationship appeared to be linear, meaning the odds of a sleep disorder rose steadily as the markers increased rather than jumping at a threshold. The associations differed by sex and marital status. People who slept less than 7 hours or more than 9 hours per day also tended to have higher neutrophil-to-HDL ratios than those sleeping 7-9 hours. This research suggests that inflammation combined with lower HDL may be tied to sleep problems. However, because the study is cross-sectional, it captures a single snapshot and cannot show whether inflammation contributes to sleep disorders, sleep disorders increase inflammation, or both. These blood-based ratios are routinely measured, so they may be useful in future research, but further studies are needed to confirm the findings.

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Citation

Gan L, Cai Y, Shi X, Feng S, Wang T, You Z, et al.. (2026). HDL-related inflammatory biomarkers are associated with sleep disorders: Evidence from a cross-sectional NHANES study.. Advances in clinical and experimental medicine : official organ Wroclaw Medical University. https://doi.org/10.17219/acem/214708