People who stay in education for
longer appear to have better ability to compensate for the effects of dementia
on the brain, a study suggests. A UK and Finnish team found those with more
education whereas likely to show the signs of dementia in their brains at death
as those with less. But they were less likely to have displayed symptoms during
their lifetime, the study in brain said,
Experts said scientists now had to find out why the effects occurred.
Over the past decade, studies on dementia have consistently shown that
the more time someone spends in education, the lower the risk of dementia will
be. But studies have been unable to show whether or not education-which is
linked to higher socio-economic status
and healthier lifestyle-protects the brain against dementia.
The researchers in this study examined the brains of 872 people who had
been part of three large ageing studies. Before their deaths they had also
completed questionnaires about their education. The researchers found that more
education makes people better able to cope with changes in the brain associated
with dementia. It is showed that, for each year spent in education, there was
an 11% decreased risk of developing dementia.
In addition, the researchers used data from the eclipse collaborations
which combines the Europian population-based longitudinal studies of ageing
from the UK and Finland which have assessed people for up to 20 years. This is
the largest study ever to confirm that hitting the books could help people
fight the symptoms of dementia in later life. What is not known is why a longer
education is so good for people. Another reason could be that education people find ways of managing or hiding their
symptoms. What is needed now is more research to find out why education can
make the brain more ‘dementia resistant’.
Rebecca Wood, chief executive of the Alzheimer’s Research Trust, said: “During dementia, protein build up in the brain and nerve cells become damaged. This research suggest that education is not able to stop the damage but enables the brain to cope better and alleviate its impact.”
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