Depression, but Not Anxiety, Is Associated with Epigenetic Age Accelerations Among Asian Older Adults

Why It Matters

The results suggest that untreated depression may speed molecular aging, underscoring the need for mental‑health interventions to promote healthy aging in rapidly aging Asian societies.

Key Takeaways

• Depression linked to higher PC‑PhenoEAA (β = 0.087 per SD)
• Clinical depression raises PC‑PhenoEAA by 0.24 SD
• Anxiety shows no significant epigenetic age association
• Women exhibit lower epigenetic age acceleration than men
• Longitudinal rise in depression predicts concurrent EAA increase

Pulse Analysis

Epigenetic clocks, which translate DNA‑methylation patterns into biological‑age estimates, have become central tools for quantifying the pace of aging beyond chronological years. First‑generation models such as HorvathAge predict calendar age, while newer second‑ and third‑generation clocks—PhenoAge, GrimAge, DunedinPACE, and PC‑PhenoEAA—capture mortality risk and health‑span trajectories. By applying six of these clocks to blood samples from the Diet and Healthy Aging cohort, researchers could compare how mental‑health symptoms map onto molecular aging signals across diverse measurement frameworks.

The analysis revealed a consistent association between depressive symptom severity and accelerated epigenetic aging, most robustly captured by PC‑PhenoEAA. Each standard‑deviation increase in the Geriatric Depression Scale corresponded to a 0.087‑SD rise in this clock, and participants meeting clinical depression criteria exhibited a 0.24‑SD elevation. In contrast, anxiety scores failed to reach significance on any clock, suggesting that depressive pathways—perhaps involving chronic inflammation, HPA‑axis dysregulation, and allostatic load—more directly influence methylation‑based aging. Longitudinal data reinforced this link, showing that individuals whose depression worsened over four to five years also experienced parallel increases in PC‑PhenoEAA, indicating a dynamic, within‑person effect rather than a static between‑group difference.

These findings carry practical implications for public‑health strategies targeting older adults in Asia, where rapid demographic shifts heighten the burden of age‑related disease. Integrating depression screening into routine geriatric care could serve as an early warning system for accelerated biological aging, prompting timely psychosocial or pharmacologic interventions. Moreover, the study supports the emerging view that mental‑health treatment may confer benefits extending to cellular longevity, a hypothesis that future randomized trials should test. As epigenetic biomarkers become more accessible, they may soon guide personalized preventive programs that address both psychological well‑being and molecular health.