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Even small amounts of walking could slow down the brain changes that lead to Alzheimer’s , a new study shows. In fact, results point to a very specific window where benefits peak.

Researchers from Mass General Brigham followed nearly 300 older adults between the ages of 50 and 90 who showed no signs of dementia when the study began.

Over more than nine years, the team tracked the participants' daily steps and used brain scans to measure amyloid-beta and tau, two key proteins linked to Alzheimer’s disease. High levels of these proteins can signal the earliest stages of the disease, long before memory problems appear.

SCIENTISTS UNCOVER HOW SOME 80-YEAR-OLDS HAVE THE MEMORY OF 50-YEAR-OLDS

Participants also completed yea

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