'Regular physical exercise appears to trump mental memory games when it comes to protecting the brain from shrinking, an otherwise natural process that occurs with age. Conversely, mentally and socially stimulating activities, long believed to stimulate the brain, had no major effect on preventing brain shrinkage, according to a study published in the journal Neurology.'
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"People in their seventies who participated in more physical exercise, including walking several times a week, had less brain shrinkage and other signs of aging in the brain than those who were less physically active," said lead author Alan J. Gow of the University of Edinburgh in Scotland. "On the other hand, our study showed no real benefit to participating in mentally and socially stimulating activities on brain size, as seen on MRI scans, over the three-year time frame."
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