Why clever clogs can fight dementia

Last updated at 14:06 15 December 2005


井戸／弁護士席-educated people and those in high-status 職業s appear to be better able to fend off the symptoms of mental 拒絶する／低下する in later life, it has been 報告（する）／憶測d.

A growing number of 熟考する／考慮するs show that the higher a person's IQ, the いっそう少なく likely they are to succumb to dementia and even brain 損失 原因（となる）d by 傷害s.

It should even be possible to fight senility with some 井戸／弁護士席 chosen mental 体操, によれば the 報告（する）／憶測 in New Scientist magazine.

Scientists have long been puzzled as to why people who lead more intellectually 刺激するing lives are somehow 保護するd from mental 拒絶する／低下する.

Some psychologists and neuroscientists have started referring to this as their "cognitive reserve".

One theory is that the brains of people with higher levels of "cognitive reserve" are better able to switch to "計画（する） B" when there are problems.

Other 専門家s believe they are 簡単に more able to 増加する the efficiency of their 存在するing brain 網状組織s.

The idea could explain why it seems people with high IQ levels go downhill 異常に quickly when they do show symptoms of a 病気 such as Alzheimer's.

Michael Rutter, from the 学校／設ける of Psychiatry in London, told the magazine that people with high education and with Alzheimer's 病気 do not 現実に 悪化する faster.

Instead, they 戦闘 the symptoms more 効果的に so that by the time the problems appear they are at a 比較して late 行う／開催する／段階 of the 病気.

早期に 予測s

研究員s believe the best predictor of cognitive ability in middle age is a person's IQ 得点する／非難する／２０ at eight-years-old.

This does not mean people cannot 上げる their brain 力／強力にする later in life to try to 増加する their 保護, によれば the 報告（する）／憶測.

The US Alzheimer's 協会 has already started encouraging people to take steps to 増加する their "cognitive reserve".

Yaakov 厳しい, of Columbia University, told the magazine: "This is as powerful as any dr ug we will ever have to stop Alzheimer's progression".

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