ArticleBiopsychosocial science and medicine
Posttraumatic Stress Disorder, Obesity, and Epigenetic Aging: A Replication Study in 1828 Veterans.
Article in Biopsychosocial science and medicine. 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
objectivePosttraumatic stress disorder (PTSD) is associated with poor health, and prior research suggests that accelerated epigenetic aging could help explain this association. A recent study found that veterans with both PTSD and obesity had greater risk for accelerated epigenetic aging compared with those with either PTSD or obesity individually, or neither condition. The objective of this study was to conduct a replication and extension of this prior work.
methodsThis study included models approximating the recent study's analytic approach in a sample of 1828 post-9/11 veterans. Our extension also included additional aging measures (PC-GrimAge and DunedinPACE), a more diverse sample, additional covariates (chronological age, smoking), and use of continuous measures of PTSD, obesity, and accelerated aging.
resultsIn contrast with the original report, we did not find evidence that obesity moderated the association of PTSD and aging, indicating that veterans with both conditions had greater risk for accelerated aging. Although several significant interactions were observed, they were in the opposite direction of the original study findings (ie, PTSD was more strongly associated with aging scores among veterans with less body mass). Our results instead demonstrated that PTSD was associated with accelerated aging across all continuously measured aging scores (0.08 ≤all βs ≤0.10), and that obesity was associated with faster DunedinPACE aging scores [β=0.36, 95% CI (0.28, 0.44)].
conclusionsOur findings provide additional evidence that PTSD and obesity may be useful targets for interventions aiming to slow aging and improve health.
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