A new study shows that moderate exercise may help prevent Alzheimer's disease by slowing memory decline and delaying its early symptoms.
Researchers randomly assigned older people at higher risk of dementia to a 24-week exercise programme or an education programme. The exercise group did 50 minutes of exercise three times a week, with walking recommended as the most effective activity. Their thinking and memory were assessed after 18 months.
The exercise group had better mental function and faster recall than the other group, which supports the value of regular, moderate exercise. The study was published in the Journal of the American Medical Association in 2008.
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