坏消息：肥胖不光丑，而且还致癌
<p><span word="A">A</span> <span word="new">new</span> <span word="discovery">discovery</span> <span word="could">could</span> <span word="explain">explain</span> <span word="why">why</span> <span word="obese">obese</span> <span word="people">people</span> <span word="are">are</span> <span word="more">more</span> <span word="likely">likely</span> <span word="to">to</span> <span word="develop">develop</span> <span word="cancer">cancer</span>, <span word="scientists">scientists</span> <span word="say">say</span>. <span word="A">A</span> <span word="type">type</span> <span word="of">of</span> <span word="cell">cell</span> <span word="the">the</span> <span word="body">body</span> <span word="uses">uses</span> <span word="to">to</span> <span word="destroy">destroy</span> <span word="cancerous">cancerous</span> <span word="tissue">tissue</span> <span word="gets">gets</span> <span word="clogged">clogged</span> <span word="by">by</span> <span word="fat">fat</span> <span word="and">and</span> <span word="stops">stops</span> <span word="working">working</span>, <span word="the">the</span> <span word="team">team</span>, <span word="from">from</span> <span word="Trinity">Trinity</span> <span word="College">College</span> <span word="Dublin">Dublin</span>, <span word="found">found</span>.</p><p>科学家们表示，现在有一项新研究可能可以解释为什么肥胖的人更可能得癌症。一个来自都柏林三一学院的团队发现，我们身体用来破坏癌变组织的一种细胞会被脂肪堵塞并停止工作。</p><p><span word="Obesity">Obesity</span> <span word="is">is</span> <span word="the">the</span> <span word="biggest">biggest</span> <span word="preventable">preventable</span> <span word="cause">cause</span> <span word="of">of</span> <span word="cancer">cancer</span> <span word="in">in</span> <span word="the">the</span> <span word="UK">UK</span> <span word="after">after</span> <span word="smoking">smoking</span>, <span word="Cancer">Cancer</span> <span word="Research">Research</span> <span word="UK">UK</span> <span word="says">says</span>. <span word="And">And</span> <span word="more">more</span> <span word="than">than</span> <span word="one">one</span> <span word="in">in</span> 20 <span word="cancer">cancer</span> <span word="cases">cases</span> - <span word="about">about</span> 22,800 <span word="cases">cases</span> <span word="each">each</span> <span word="year">year</span> <span word="in">in</span> <span word="the">the</span> <span word="UK">UK</span> - <span word="are">are</span> <span word="caused">caused</span> <span word="by">by</span> <span word="excess">excess</span> <span word="body">body</span> <span word="weight">weight</span>.</p><p>据英国的癌症研究学会说，肥胖在英国是仅次于吸烟的可预防型癌症原因。而且有超过1/20的癌症案例都是由超重引起的，这在英国每年就有差不错22800例。</p><p><span word="Experts">Experts</span> <span word="already">already</span> <span word="suspected">suspected</span> <span word="fat">fat</span> <span word="sent">sent</span> <span word="signals">signals</span> <span word="to">to</span> <span word="the">the</span> <span word="body">body</span> <span word="that">that</span> <span word="could">could</span> <span word="both">both</span> <span word="damage">damage</span> <span word="cells">cells</span>, <span word="leading">leading</span> <span word="to">to</span> <span word="cancer">cancer</span>, <span word="and">and</span> <span word="increase">increase</span> <span word="the">the</span> <span word="number">number</span> <span word="of">of</span> <span word="them">them</span>. <span word="Now">Now</span>, <span word="the">the</span> <span word="Trinity">Trinity</span> <span word="scientists">scientists</span> <span word="have">have</span> <span word="been">been</span> <span word="able">able</span> <span word="to">to</span> <span word="show">show</span>, <span word="in">in</span> <span word="Nature">Nature</span> <span word="Immunology">Immunology</span> <span word="journal">journal</span>, <span word="how">how</span> <span word="the">the</span> <span word="body">body</span>'<span word="s">s</span> <span word="cancer">cancer</span>-<span word="fighting">fighting</span> <span word="cells">cells</span> <span word="get">get</span> <span word="clogged">clogged</span> <span word="by">by</span> <span word="fat">fat</span>.</p><p>专家们以前就在怀疑脂肪给身体传递的一些信号会损害我们的细胞、引发癌症并增加癌变细胞的数量。而跟根这次据三一学院的科学家在《自然免疫学》期刊上发表的研究，他们已经能够展示出脂肪是如何堵塞那些抗癌细胞的了。</p>
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