研究：长途驾驶会导致大脑退化
<p>家住郊区的通勤族注意了，以车代步能让双脚得到休息，但是司机的大脑却可能因为长时间缺乏“运动”而退化。科学家警告说，每日驾车时间超过两小时会导致智力下降，长此以往会加速大脑老化。</p><p><span word="Driving">Driving</span> <span word="for">for</span> <span word="more">more</span> <span word="than">than</span> <span word="two">two</span> <span word="hours">hours</span> <span word="a">a</span> <span word="day">day</span> <span word="negatively">negatively</span> <span word="affects">affects</span> <span word="IQ">IQ</span> <span word="levels">levels</span>, <span word="scientists">scientists</span> <span word="have">have</span> <span word="warned">warned</span>.</p><p>科学家警告称，每日驾驶时间超过2小时会对智商产生消极影响。</p><p><span word="In">In</span> <span word="what">what</span> <span word="might">might</span> <span word="come">come</span> <span word="as">as</span> <span word="unwelcome">unwelcome</span> <span word="news">news</span> <span word="for">for</span> <span word="middle">middle</span>-<span word="aged">aged</span> <span word="commuters">commuters</span>, <span word="a">a</span> <span word="recent">recent</span> <span word="study">study</span> <span word="found">found</span> <span word="that">that</span> <span word="long">long</span> <span word="periods">periods</span> <span word="behind">behind</span> <span word="the">the</span> <span word="wheel">wheel</span> <span word="could">could</span> <span word="speed">speed</span> <span word="up">up</span> <span word="the">the</span> <span word="effects">effects</span> <span word="of">of</span> <span word="age">age</span> <span word="on">on</span> <span word="the">the</span> <span word="brain">brain</span>.</p><p>最近一项研究发现，长期驾车会加速大脑老化，这对中年通勤族而言并非好消息。</p><p><span word="The">The</span> <span word="researchers">researchers</span> <span word="said">said</span> <span word="that">that</span> <span word="the">the</span> <span word="results">results</span> <span word="could">could</span> <span word="be">be</span> <span word="explained">explained</span> <span word="by">by</span> <span word="the">the</span> <span word="fact">fact</span> <span word="that">that</span> <span word="the">the</span> <span word="mind">mind</span> <span word="is">is</span> <span word="less">less</span> <span word="active">active</span> <span word="on">on</span> <span word="long">long</span> <span word="car">car</span> <span word="journeys">journeys</span>.</p><p>研究人员表示，产生这一结果的原因可能是在长时间驾驶过程中，大脑不如往常活跃。</p><p><span word="The">The</span> <span word="mammoth">mammoth</span> <span word="project">project</span> <span word="saw">saw</span> <span word="more">more</span> <span word="than">than</span> <span word="half">half</span> <span word="a">a</span> <span word="million">million</span> <span word="Britons">Britons</span> <span word="aged">aged</span> 37-73 <span word="studied">studied</span> <span word="over">over</span> <span word="a">a</span> <span word="period">period</span> <span word="of">of</span> <span word="five">five</span> <span word="years">years</span>.</p><p>这个规模庞大的研究项目在五年间观察了超过50万名37岁至73岁的英国人。</p><p><span word="Out">Out</span> <span word="of">of</span> <span word="these">these</span> <span word="some">some</span> 93,000 <span word="of">of</span> <span word="them">them</span> <span word="drove">drove</span> <span word="more">more</span> <span word="than">than</span> <span word="two">two</span> <span word="or">or</span> <span word="three">three</span> <span word="hours">hours</span> <span word="a">a</span> <span word="day">day</span>.</p><p>他们中有约93000人每日驾驶时间超过两三个小时。</p><p><span word="Researchers">Researchers</span> <span word="found">found</span> <span word="that">that</span> <span word="not">not</span> <span word="only">only</span> <span word="did">did</span> <span word="this">this</span> <span word="proportion">proportion</span> <span word="of">of</span> <span word="subjects">subjects</span> <span word="typically">typically</span> <span word="have">have</span> <span word="lower">lower</span> <span word="brainpower">brainpower</span> <span word="to">to</span> <span word="begin">begin</span> <span word="with">with</span> <span word="but">but</span> <span word="their">their</span> <span word="IQ">IQ</span> <span word="score">score</span> <span word="declined">declined</span> <span word="more">more</span> <span word="rapidly">rapidly</span> <span word="over">over</span> <span word="the">the</span> <span word="course">course</span> <span word="of">of</span> <span word="the">the</span> <span word="study">study</span> <span word="than">than</span> <span word="those">those</span> <span word="who">who</span> <span word="did">did</span> <span word="little">little</span> <span word="or">or</span> <span word="no">no</span> <span word="driving">driving</span>.</p>
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