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At Least 15 Miles/week However

Running, Power Walking Cut Dementia Risk

You can significantly reduce your risk of developing dementia or Alzheimer's in your later years by running or briskly walking now, but only if you exceed the national guidelines for such exercises by at least 100 percent. An analysis of data derived from following 154,000 participants in the National Runners' and Walkers' Healthy Study for 11.6 years conducted by the Lawrence Berkeley National Laboratory has determined that those who ran or walked vigorously for more than 15.3 miles per week cut their Alzheimer's risk by 40 percent, while those who merely met the standard recommendation of five to eight miles weekly saw no such statistical risk reduction. To meet the new standard would require a minimum of 150 minutes of weekly running or 300 minutes of energetic walking.

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