# Healthy Lifestyle Didn't Change Brain Scans, But Still Helped At-Risk Seniors

*Brain Imaging Biomarkers and Cognitive Outcomes in a Multidomain Lifestyle Intervention: The POINTER Imaging Ancillary Study.*

- **Evidence Level**: Strong
- **Publication Types**: Journal Article
- **Journal**: JAMA neurology
- **Sample Size**: 983 adults aged 60-79 at risk for cognitive decline
- **Authors**: Harrison TM, Harvey DJ, Chadwick T, Chao Y, Taggett J, Maillard P, Lovato L, Farias ST, Papp KV, Lockhart SN, Toga AW, Koeppe RA, Jung Y, Jagust WJ, Whitmer RA, Snyder HM, Carrillo MC, Baker LD, Espeland MA, Vemuri P, DeCarli C, Landau SM
- **Published**: 2026-04-20
- **Topics**: cognitive decline, lifestyle intervention, brain imaging
- **DOI**: https://doi.org/10.1001/jamaneurol.2026.0832
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/42008251/

## Summary

In older adults at risk for cognitive decline, a two-year program of exercise, better diet, and social engagement didn't visibly change brain biomarkers like amyloid or shrinkage. But people who started with smaller hippocampi (the brain's memory hub) got more cognitive benefit from the structured version. So the lifestyle changes may help thinking even without obviously reshaping the brain.

## Practical Takeaway

This study suggests structured lifestyle programs may especially help those already showing early brain aging.

---

_Canonical: https://longevity-switzerland.com/en/research/healthy-lifestyle-didn-t-change-brain-scans-but-still-helped-at-risk-seniors · Part of Longevity Cities · Updated 2026-04-20_