Observational associations describe patterns in study populations—they do not guarantee the same result for any one person.
Research question
How does self-reported or measured physical activity at baseline relate to the outcomes measured in this study?
Participants
341,471 participants across included studies
Follow-up
See primary publication for follow-up duration.
Findings
Physical activity was associated with slightly better late-life global cognition (standardized coefficient 0.03) and lower incidence of cognitive decline in some analyses, but associations were weak with no clear dose–response pattern.
What this means for your lifestyle
Activity supports a broader healthy-aging strategy (sleep, cardiometabolic care, social connection); it is not a standalone guarantee against cognitive decline.
Limitations
Observational studies; measurement heterogeneity; possible reverse causation in short follow-ups.
Original research
Summary reviewed October 21, 2026
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