Walking and a Healthy Memory

The Health Day Newsletter contained an article1 summarizing a news release from the November 29, 2010 meeting of the Radiological Society of North America. The research suggests that walking about five miles a week may help slow the progression of cognitive illness among seniors already suffering from mild forms of cognitive impairment or Alzheimer’s Disease. The research also indicated that walking just six miles a week can help prevent the onset of disease.

Two appealing features leap out at me from this news. First is the cost. Walking costs nothing (unless you choose walking shoes or consider the minimal wear placed on shoes). Secondly, this is a reasonable regimen. Six miles is not excessively demanding, particularly when you consider that it can be spread out over an entire week.

3-D MRI scans were done to measure brain volume. After accounting for age, gender, body-fat composition, head size, and education, it was found that the more the individual engaged in physical activity, the larger the brain volume. Greater brain volume is a sign of a lower degree of brain cell death as well as general brain health. Cognitive tests were also administered and these also indicated improved cognitive performance in healthy individuals and lower losses in cognitive performance for those who already had begun to decline cognitively.

Physical activity improves blood flow to the brain, changes neurotransmitters, and improves cardiac function. It also lessens the risk of obesity, improves insulin resistance and lowers the risk of diabetes, and lowers blood pressure, All of these things are risk factors for Alzheimer’s disease.

Clearly the Healthymemory Blog endorses physical activity in addition to the mental activities advocated in this blog. These include mnemonic techniques and transactive memory. Transactive memory entails cognitive growth via technology and our fellow human beings.

1Regular Walking May Slow Decline of Alzheimer;s, http://consumer;healthday.com/Article.asp?AID=646656

© Douglas Griffith and healthymemory.wordpress.com, 2011. Unauthorized use and/or duplication of this material without express and written permission from this blog’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Douglas Griffith and healthymemory.wordpress.com with appropriate and specific direction to the original content.

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