研究:记忆衰退从45岁开始
<p><span word="Loss">Loss</span> <span word="of">of</span> <span word="memory">memory</span> <span word="and">and</span> <span word="other">other</span> <span word="brain">brain</span> <span word="function">function</span> <span word="can">can</span> <span word="start">start</span> <span word="as">as</span> <span word="early">early</span> <span word="as">as</span> <span word="age">age</span> 45, <span word="posing">posing</span> <span word="a">a</span> <span word="big">big</span> <span word="challenge">challenge</span> <span word="to">to</span> <span word="scientists">scientists</span> <span word="looking">looking</span> <span word="for">for</span> <span word="new">new</span> <span word="ways">ways</span> <span word="to">to</span> <span word="stave">stave</span> <span word="off">off</span> <span word="dementia">dementia</span>, <span word="researchers">researchers</span> <span word="said">said</span>, <span word="Reuters">Reuters</span> <span word="reported">reported</span>.</p><p>路透社报道，研究人员表示，记忆力及其它大脑功能最早从45岁便开始衰退了，这给寻找痴呆治疗法的科学家提出了新的难题。</p><p><span word="A">A</span> <span word="research">research</span> <span word="team">team</span> <span word="followed">followed</span> <span word="more">more</span> <span word="than">than</span> 7,000 <span word="British">British</span> <span word="government">government</span> <span word="workers">workers</span> <span word="over">over</span> <span word="a">a</span> <span word="period">period</span> <span word="of">of</span> 10 <span word="years">years</span>. <span word="Participants">Participants</span> <span word="were">were</span> <span word="assessed">assessed</span> <span word="three">three</span> <span word="times">times</span> <span word="during">during</span> <span word="the">the</span> <span word="study">study</span>, <span word="using">using</span> <span word="tests">tests</span> <span word="for">for</span> <span word="memory">memory</span>, <span word="vocabulary">vocabulary</span>, <span word="and">and</span> <span word="aural">aural</span> <span word="and">and</span> <span word="visual">visual</span> <span word="comprehension">comprehension</span> <span word="skills">skills</span>.</p><p>在过去10年中，一组科研人员跟踪观察了七千多名英国政府工作人员。期间，研究人员用记忆力、词汇、视听领悟力测试对参与人员进行了3次评估。</p><p><span word="Over">Over</span> <span word="the">the</span> 10-<span word="year">year</span> <span word="period">period</span>, <span word="there">there</span> <span word="was">was</span> <span word="a">a</span> 3.6 <span word="percent">percent</span> <span word="decline">decline</span> <span word="in">in</span> <span word="mental">mental</span> <span word="reasoning">reasoning</span> <span word="in">in</span> <span word="both">both</span> <span word="men">men</span> <span word="and">and</span> <span word="women">women</span> <span word="aged">aged</span> 45-49 <span word="at">at</span> <span word="the">the</span> <span word="start">start</span> <span word="of">of</span> <span word="the">the</span> <span word="study">study</span>, <span word="while">while</span> <span word="the">the</span> <span word="decline">decline</span> <span word="for">for</span> <span word="men">men</span> <span word="aged">aged</span> 65-70 <span word="was">was</span> 9.6 <span word="percent">percent</span> <span word="and">and</span> 7.4 <span word="percent">percent</span> <span word="for">for</span> <span word="women">women</span>.</p><p>10年中，研究刚开始时，45至49岁男女的智力推理能力下降了3.6%，而65至70岁男子的能力下降9.6%，该年龄段女子的能力下降了7.4%。</p><p><span word="Since">Since</span> <span word="the">the</span> <span word="youngest">youngest</span> <span word="individuals">individuals</span> <span word="at">at</span> <span word="the">the</span> <span word="start">start</span> <span word="of">of</span> <span word="the">the</span> <span word="study">study</span> <span word="were">were</span> 45, <span word="it">it</span> <span word="is">is</span> <span word="possible">possible</span> <span word="that">that</span> <span word="the">the</span> <span word="decline">decline</span> <span word="in">in</span> <span word="cognition">cognition</span> <span word="might">might</span> <span word="have">have</span> <span word="commenced">commenced</span> <span word="even">even</span> <span word="earlier">earlier</span>.</p><p>由于研究开始时最年轻的个人为45岁，思维能力开始衰退的时间可能更早。</p>
页:
[1]