Key Takeaway
Walking ~10,000 steps daily was associated with 51% lower dementia risk, with benefits starting at just 3,800 steps per day.
Summary
This large prospective study analyzed accelerometer data from 78,430 UK Biobank participants to examine the relationship between daily steps and dementia incidence.
Results showed a dose-response relationship, with optimal benefits around 9,800 steps daily. Even modest increases in daily steps were associated with meaningful reductions in dementia risk.
Methods
- Prospective cohort study
- 78,430 participants
- 7-year follow-up
- Accelerometer-measured steps
Key Results
- 51% lower dementia risk at ~10,000 steps
- Benefits begin at 3,800 steps/day
- Dose-response relationship observed
- Step intensity also matters
Figures
Figure 1
Figure 2
Limitations
- Observational design
- Single measurement period
- Predominantly white UK population
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