工作压力大有多可怕?
<p><span word="New">New</span> <span word="research">research</span> <span word="shows">shows</span> <span word="just">just</span> <span word="how">how</span> <span word="stressful">stressful</span> <span word="starting">starting</span> <span word="a">a</span> <span word="new">new</span> <span word="career">career</span> <span word="as">as</span> <span word="a">a</span> <span word="doctor">doctor</span> <span word="can">can</span> <span word="be">be</span>: <span word="stressful">stressful</span> <span word="enough">enough</span> <span word="to">to</span> <span word="have">have</span> <span word="your">your</span> <span word="DNA">DNA</span> <span word="age">age</span> <span word="six">six</span> <span word="times">times</span> <span word="faster">faster</span> <span word="than">than</span> <span word="it">it</span> <span word="normally">normally</span> <span word="would">would</span>.</p><p>一项新研究表明，开始医生新职业的压力有多大：压力足以让你的<span word="DNA">DNA</span>衰老速度比正常情况快六倍。</p><p><span word="Scientists">Scientists</span> <span word="studying">studying</span> <span word="cellular">cellular</span> <span word="ageing">ageing</span> <span word="through">through</span> <span word="DNA">DNA</span> <span word="telomeres">telomeres</span> (<span word="the">the</span> '<span word="tips">tips</span>' <span word="of">of</span> <span word="our">our</span> <span word="chromosomes">chromosomes</span>), <span word="which">which</span> <span word="shrink">shrink</span> <span word="as">as</span> <span word="we">we</span> <span word="get">get</span> <span word="older">older</span>, <span word="found">found</span> <span word="that">that</span> <span word="this">this</span> <span word="natural">natural</span> <span word="shrinkage">shrinkage</span> <span word="was">was</span> <span word="happening">happening</span> <span word="at">at</span> <span word="an">an</span> <span word="accelerated">accelerated</span> <span word="rate">rate</span> <span word="among">among</span> <span word="new">new</span> <span word="doctors">doctors</span> – <span word="the">the</span> <span word="equivalent">equivalent</span> <span word="of">of</span> <span word="six">six</span> <span word="years">years</span>' <span word="worth">worth</span> <span word="of">of</span> <span word="shortening">shortening</span> <span word="in">in</span> <span word="just">just</span> 12 <span word="months">months</span>.</p><p>科学家通过<span word="DNA">DNA</span>端粒(染色体的“尖端”)研究细胞衰老，随着年龄的增长，端粒会收缩。他们发现，新医生体内的这种自然收缩速度正在加快——这相当于在短短12个月内缩短6年的时间。</p><p><span word="It">It</span>'<span word="s">s</span> <span word="the">the</span> <span word="first">first</span> <span word="large">large</span>, <span word="longitudinal">longitudinal</span> <span word="study">study</span> <span word="to">to</span> <span word="look">look</span> <span word="at">at</span> <span word="the">the</span> <span word="link">link</span> <span word="between">between</span> <span word="chronic">chronic</span> <span word="stress">stress</span> <span word="and">and</span> <span word="cell">cell</span> <span word="ageing">ageing</span>, <span word="and">and</span> <span word="the">the</span> <span word="team">team</span> <span word="behind">behind</span> <span word="the">the</span> <span word="research">research</span> <span word="says">says</span> <span word="it">it</span> <span word="could">could</span> <span word="have">have</span> <span word="implications">implications</span> <span word="for">for</span> <span word="those">those</span> <span word="in">in</span> <span word="any">any</span> <span word="high">high</span>-<span word="pressure">pressure</span> <span word="situation">situation</span>, <span word="from">from</span> <span word="trainee">trainee</span> <span word="soldiers">soldiers</span> <span word="to">to</span> <span word="new">new</span> <span word="parents">parents</span>.</p><p>这是第一个大型的纵向研究，着眼于慢性压力和细胞衰老之间的联系，研究团队表示，这可能会对任何高压环境下的人产生影响，从新兵到新父母。</p><p>"<span word="Research">Research</span> <span word="has">has</span> <span word="implicated">implicated</span> <span word="telomeres">telomeres</span> <span word="as">as</span> <span word="an">an</span> <span word="indicator">indicator</span> <span word="of">of</span> <span word="ageing">ageing</span> <span word="and">and</span> <span word="disease">disease</span> <span word="risk">risk</span>, <span word="but">but</span> <span word="these">these</span> <span word="longitudinal">longitudinal</span> <span word="findings">findings</span> <span word="advance">advance</span> <span word="the">the</span> <span word="possibility">possibility</span> <span word="that">that</span> <span word="telomere">telomere</span> <span word="length">length</span> <span word="can">can</span> <span word="serve">serve</span> <span word="as">as</span> <span word="a">a</span> <span word="biomarker">biomarker</span> <span word="that">that</span> <span word="tracks">tracks</span> <span word="effects">effects</span> <span word="of">of</span> <span word="stress">stress</span>," <span word="says">says</span> <span word="one">one</span> <span word="of">of</span> <span word="the">the</span> <span word="team">team</span>, <span word="neuroscientist">neuroscientist</span> <span word="and">and</span> <span word="psychiatrist">psychiatrist</span> <span word="Srijan">Srijan</span> <span word="Sen">Sen</span> <span word="from">from</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="Michigan">Michigan</span> (<span word="U">U</span>-<span word="M">M</span>).</p>
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