Aerobic exercise and simple stretching may both lower Alzheimer's risk - USA TODAY

A study finds exercise helps slow cognitive decline in at-risk older adults. It's an example of how researchers seek to attack Alzheimer's disease.

For older adults at risk of dementia, regular exercise from light stretching to rigorous aerobics can help slow memory and thinking decline, a new study shows.  Alzheimer’s researchers said the find… [+6987 chars]

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