Will weightlifting make you smarter?

Researchers have conducted a study that shows the even after the onset of dementia, strength training can help improve cognitive functioning in elderly women who already have some signs of neurological deficit.
“Among people who don’t yet have dementia but are already at a high risk in terms of mild memory and executive function impairment, our study shows that strength training, but not aerobics training, does have benefits for cognition,” said Teresa Liu-Ambrose, an assistant professor in the Department of Physical Therapy at UBC.

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San Francisco Chronicle, Tue Apr 24 2012, By: Doc Gurley, Link to full text