HEALTH

Moderate daily steps linked to slower cognitive decline

A long-running study in Nature Medicine reports that older adults at heightened risk of Alzheimer’s who walk a few thousand steps a day show slower cognitive decline, linked to fewer tau tangles rather than changes in amyloid. Tracking nearly 300 people ages 50 to 90 for about nine years, researchers found benefits begin around 3,000 to 5,000 steps, peak near 5,000 to 7,500, and level off beyond that. Effects were seen mainly in participants with higher amyloid. Experts called the work notable but noted it’s observational, with one-week step tracking and a mostly white, well-educated sample.

Reviewed by JQJO team

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