女性40岁戒烟可多活十年
<p>一项针对130万女性的最新研究发现，女性在40岁时戒烟可明显降低死亡率，能多活十年；30岁戒烟则可以将早亡的额外风险降低97%。研究结果显示，终身吸烟者的寿命比不吸烟者少十年，且多死于肺癌、慢性肺病、心脏病等由吸烟导致的疾病。吸烟者的死亡风险随着吸入烟草的数量不断增加，就算每天吸烟少于十枝的烟民，其死亡风险仍是不吸烟者的两倍。研究人员指出，虽然40岁以前一直吸烟对身体危害很大，但40岁之后继续吸烟的危害却是之前阶段的十倍。</p><p><span word="Women">Women</span> <span word="who">who</span> <span word="stop">stop</span> <span word="smoking">smoking</span> <span word="by">by</span> <span word="the">the</span> <span word="age">age</span> <span word="of">of</span> 40 <span word="dramatically">dramatically</span> <span word="cut">cut</span> <span word="risk">risk</span> <span word="of">of</span> <span word="early">early</span> <span word="death">death</span>, <span word="enjoying">enjoying</span> <span word="up">up</span> <span word="to">to</span> <span word="ten">ten</span> <span word="more">more</span> <span word="years">years</span> <span word="of">of</span> <span word="life">life</span>, <span word="a">a</span> <span word="major">major</span> <span word="new">new</span> <span word="study">study</span> <span word="has">has</span> <span word="found">found</span>.</p><p><span word="The">The</span> <span word="study">study</span> <span word="of">of</span> 1.3 <span word="million">million</span> <span word="women">women</span> <span word="found">found</span> <span word="that">that</span> <span word="quitting">quitting</span> <span word="smoking">smoking</span> <span word="by">by</span> <span word="the">the</span> <span word="age">age</span> <span word="of">of</span> 30 <span word="allowed">allowed</span> <span word="women">women</span> <span word="to">to</span> <span word="avoid">avoid</span> <span word="up">up</span> <span word="to">to</span> 97 <span word="percent">percent</span> <span word="of">of</span> <span word="the">the</span> <span word="extra">extra</span> <span word="risk">risk</span> <span word="of">of</span> <span word="premature">premature</span> <span word="death">death</span>.</p><p><span word="The">The</span> <span word="results">results</span>, <span word="which">which</span> <span word="are">are</span> <span word="published">published</span> <span word="in">in</span> <span word="The">The</span> <span word="Lancet">Lancet</span> <span word="medical">medical</span> <span word="journal">journal</span>, <span word="showed">showed</span> <span word="that">that</span> <span word="lifelong">lifelong</span> <span word="smokers">smokers</span> <span word="died">died</span> <span word="a">a</span> <span word="decade">decade</span> <span word="earlier">earlier</span> <span word="than">than</span> <span word="those">those</span> <span word="who">who</span> <span word="did">did</span> <span word="not">not</span> <span word="smoke">smoke</span> <span word="at">at</span> <span word="all">all</span>.</p><p><span word="Those">Those</span> <span word="who">who</span> <span word="stopped">stopped</span> <span word="at">at</span> <span word="thirty">thirty</span> <span word="lost">lost</span> <span word="an">an</span> <span word="average">average</span> <span word="of">of</span> <span word="a">a</span> <span word="month">month</span> <span word="of">of</span> <span word="life">life</span> <span word="and">and</span> <span word="if">if</span> <span word="they">they</span> <span word="stopped">stopped</span> <span word="at">at</span> 40 <span word="they">they</span> <span word="died">died</span> <span word="a">a</span> <span word="year">year</span> <span word="younger">younger</span>.</p><p><span word="Most">Most</span> <span word="of">of</span> <span word="the">the</span> <span word="increased">increased</span> <span word="death">death</span> <span word="rate">rate</span> <span word="resulted">resulted</span> <span word="from">from</span> <span word="smoking">smoking</span>-<span word="related">related</span> <span word="diseases">diseases</span> <span word="such">such</span> <span word="as">as</span> <span word="lung">lung</span> <span word="cancer">cancer</span>, <span word="chronic">chronic</span> <span word="lung">lung</span> <span word="disease">disease</span>, <span word="heart">heart</span> <span word="disease">disease</span> <span word="or">or</span> <span word="stroke">stroke</span>.</p><p><span word="The">The</span> <span word="risk">risk</span> <span word="rose">rose</span> <span word="steeply">steeply</span> <span word="with">with</span> <span word="the">the</span> <span word="quantity">quantity</span> <span word="of">of</span> <span word="tobacco">tobacco</span> <span word="smoked">smoked</span>, <span word="but">but</span> <span word="even">even</span> <span word="light">light</span> <span word="smokers">smokers</span> <span word="who">who</span> <span word="puffed">puffed</span> <span word="fewer">fewer</span> <span word="than">than</span> 10 <span word="cigarettes">cigarettes</span> <span word="a">a</span> <span word="day">day</span> <span word="doubled">doubled</span> <span word="their">their</span> <span word="likelihood">likelihood</span> <span word="of">of</span> <span word="dying">dying</span>.</p>
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