Exercise can boost your brain power, even if your memory is starting to fade.

Researchers enrolled 170 men and women aged 50 or older who answered "yes" when asked "Do you have any difficulty with your memory?" (None of them had dementia,)

Half were given information about memory loss, stress management, a healthy diet. alcohol, and smoking, while the other half got the same information plus counseling. newsletters, and other encouragements to walk briskly or do similar exercise for at least 50 minutes three times a week.

After six months, the exercise group improved modestly on the cognitive section of the Alzheimer Disease Assessment Scale. while the other group declined. The exercise group still fared better after 18 months.

What to do: Go for a walk…every day.

J. Am. Med. Assoc. 300: 1027, 1077, 2008.

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