# Big Trial Asks If Fasting or Exercise Can Actually Slow Aging in Seniors

*Study protocol for FAXAge: a randomized, controlled clinical trial of fasting and exercise to slow aging in humans.*

- **Evidence Level**: Preliminary
- **Publication Types**: Journal Article
- **Journal**: GeroScience
- **Sample Size**: 240 healthy adults aged 65 and above
- **Authors**: Fals EB, Springborg EC, Berthelsen AB, Nyeman-Nielsen J, Larsen S, Scheibye-Knudsen M
- **Published**: 2026-06-29
- **Topics**: fasting, exercise, biological aging
- **DOI**: https://doi.org/10.1007/s11357-026-02362-0
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/42373885/

## Summary

Scientists are launching a year-long trial to test whether exercise, time-restricted eating, or both together can slow biological aging. They will study 240 healthy adults aged 65 and up, tracking a DNA-based aging clock called Dunedin Pace of Aging. This is a plan for a study, so there are no results yet. It's worth watching if you're curious how fasting and workouts stack up head to head.

## Practical Takeaway

This study may soon show whether fasting or exercise better slows aging in older adults.

---

_Canonical: https://longevity-china.com/en/research/big-trial-asks-if-fasting-or-exercise-can-actually-slow-aging-in-seniors · Part of Longevity Cities · Updated 2026-06-29_