# Your Epigenetic Age May Predict How Fast Your Grip and Memory Fade

_Evidence Level: Moderate · Prapiadou S et al., The journals of gerontology. Series A, Biological sciences and medical sciences, DOI 10.1093/gerona/glag213_

*Biological Age Associates with Longitudinal Frailty-Related Functional Decline: The Health and Retirement Study.*

- **Evidence Level**: Moderate
- **Why this grade**: Observational cohort of 4,018 older adults followed up to 12 years, yet retrospective associations that cannot show cause and rest on a single US study population.
- **Publication Types**: Journal Article
- **Journal**: The journals of gerontology. Series A, Biological sciences and medical sciences
- **Sample Size**: 4,018 older adults with DNA methylation data
- **Authors**: Prapiadou S, Kimball TN, Tan BYQ, Tack RWP, Choksi D, Duperron MG, Senff JR, Reinders EM, Feng TL, Singh SD, Rosand J, Anderson CD
- **Graded and published**: 2026-08-28
- **Last edited**: 2026-09-17
- **Topics**: epigenetic clocks, biological age, frailty
- **DOI**: https://doi.org/10.1093/gerona/glag213
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/42664064/

## Summary

Among about 4,000 older Americans followed for up to 12 years, those whose DNA looked biologically older lost function faster. The GrimAge clock stood out, tracking quicker decline in memory, grip strength, and walking speed. Other clocks barely showed anything, so not all biological age tests are equal. This is a correlation, not proof that a clock can tell you your future.

## Practical Takeaway

This study suggests not all epigenetic age tests track real-world decline equally well.

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_Canonical: https://longevity-germany.com/en/research/your-epigenetic-age-may-predict-how-fast-your-grip-and-memory-fade · Part of Longevity Cities · Updated 2026-09-17_