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Johns Hopkins Health Alert

Advice to Keep Dementia at Bay

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Recently, researchers looking into cognitive decline and dementia have made encouraging findings. Although it was believed that the adult brain could not develop new neurons (or brain cells), scientists have learned in the past decade or so that the human brain is pliable and adaptive. The brain can actually add new neurons even late in life and continually form new connections among existing neurons -- a phenomenon known as neuroplasticity. 

This means that while an aging brain may have signs of damage, it can often compensate for them, at least initially. And engaging in mentally stimulating activities like reading, taking a class or playing board games is one way to bolster this process. 

This compensation process depends on your "cognitive reserve," the extra, perhaps unused, amount of cognitive ability that can make up for the loss of brain functioning when your brain shows signs of dementia due to the death of cells and their replacement by beta-amyloid plaques. Genetics, early childhood stimulation and education level can influence cognitive reserve but are essentially immutable once you're an adult. 

Fortunately, studies have found that you can also increase your cognitive reserve and delay the onset of dementia through a variety of intellectually stimulating leisure activities in middle and later life. 

A study in the journal Neurology, for example, found that among 101 people who eventually developed dementia, those who frequently participated in one or more activities, such as reading, writing, doing crossword puzzles, playing card or board games, having group discussions or playing music experienced memory decline more than one year later than those who participated in these activities less often. These pursuits built cognitive reserve and delayed dementia as much as a higher education level did. 

It's worth noting that researchers have discovered that watching television is a passive activity that doesn't really stimulate your mind at all; on the contrary, watching television is associated with an increased risk of cognitive decline. One study found that TV watchers were 10 percent more likely than nonwatchers to experience cognitive impairments over a five-year period. A possible explanation: Time spent in front of the TV means less time for the mental, social and physical activities that can help delay dementia. 

Posted in Memory on January 9, 2012


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Health Alerts registered users may post comments and share experiences here at their own discretion. We regret that questions on individual health concerns to the Johns Hopkins editors cannot be answered in this space.

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The information I receive about Alzheimer's Disease is super. However, I have not found any discussion here or elsewhere addressing caregivers with an AD spouse in a nursing home.

It appears to me that once we have made the decision for our loved one to live in a nursing home, there is no help offered. We are still caregivers and we still look for help in caring for our AD spouse. Life is not over for either of us.

Another needed help is in how to approach the nursing facility staff in improvements for the AD patients lives...activities, improve surroundings etc. Many of us have had life experiences and/or education (self educated or otherwise) that could be put to use.

Finally, as the recognition of AD is acknowledged as widespread and spares few families, the need to address successful facility living is greater.

Thank you, Grannybchicago

Posted by: Grannybchicago | January 14, 2012 11:35 AM

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