# Tracking Your 'Biological Age' Over Time May Predict Death Risk Better Than a Single Snapshot

- **Evidence Level**: Moderate
- **Journal**: GeroScience
- **Sample Size**: 90,632 adults (25,752 with repeat measures); median follow-up 13.8 years
- **Published**: 2026-04-14
- **Topics**: biological aging, mortality, biomarkers
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/41981354/

## Summary

In over 90,000 Dutch adults followed for nearly 14 years, people whose biological age ran ahead of their calendar age had a higher risk of dying. More importantly, among 25,000 people measured twice, those whose biological age sped up over time faced even greater risk. People stuck in a pattern of accelerated aging had a 39% higher mortality risk compared to those aging at a normal pace. The results suggest that checking biological age once might not be enough.

## Practical Takeaway

This study suggests monitoring biological age over time could be more informative than a one-time measurement.

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