Canadian researchers who used PET imaging found that clinically healthy older adults with moderate physical activity and especially those with nearly 8,900 steps daily had slower cognitive decline and gray matter volume reductions related to amyloid-beta accumulation, which is associated with Alzheimer's disease. The findings, presented at the Alzheimer's Association annual meeting and published in JAMA Neurology, suggest "we shouldn't wait until people are symptomatic" to suggest healthy lifestyle changes, researcher Jennifer Rabin said.
Study links exercise to slower Alzheimer's-linked brain changes
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