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Walking may slow the cognitive decline in adults with Alzheimer's disease, according to a new study presented Monday at the annual meeting of the Radiological Society of North America.
The study, done by Cyrus Raji at the University of Pittsburgh, found that walking about eight kilometres per week helped to slow memory loss.
"We found that walking . . . protects the brain structure over 10 years in people with Alzheimer's and MCI, (mild cognitive impairment) especially in areas of the brain's key memory and learning centres," said Raji. "We also found that these people had a slower decline in memory loss over five years."
Alzheimer's is an incurable brain disease that destroys memory and cognitive skills. According to the Alzheimer's Society of Canada, there were about 480,000 Canadians with Alzheimer's and related dementia in 2008. The society estimates that number will reach 1,125,200 by 2038.
The society also estimates the economic burden of dementia in Canada doubles every decade, increasing from $15 billion in 2008 to $153 billion in 2038.
"Cognitively impaired people needed to walk at least 58 city blocks, or approximately five miles (eight kilometres), per week, to maintain brain volume and slow cognitive decline. The healthy adults needed to walk at least 72 city blocks, or six miles, per week to maintain brain volume and significantly reduce their risk for cognitive decline," Raji said in a release Monday. Read more: canada.com
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