防晒霜的另一种隐藏功能:抗皱
<p><span word="Dermatologists">Dermatologists</span> <span word="have">have</span> <span word="been">been</span> <span word="telling">telling</span> <span word="patients">patients</span> <span word="for">for</span> <span word="years">years</span> <span word="that">that</span> <span word="using">using</span> <span word="sunscreen">sunscreen</span> <span word="regularly">regularly</span> <span word="can">can</span> <span word="protect">protect</span> <span word="skin">skin</span> <span word="against">against</span> <span word="aging">aging</span>. <span word="Now">Now</span> <span word="there">there</span>'<span word="s">s</span> <span word="research">research</span> <span word="to">to</span> <span word="back">back</span> <span word="that">that</span> <span word="up">up</span>.</p><p>皮肤科医生多年来一直告诫患者，经常使用防晒霜能够防止皮肤老化。如今，这种说法有了研究证据的支持。</p><p><span word="In">In</span> <span word="a">a</span> <span word="study">study</span> <span word="published">published</span> <span word="in">in</span> <span word="the">the</span> <span word="Annals">Annals</span> <span word="of">of</span> <span word="Internal">Internal</span> <span word="Medicine">Medicine</span>, <span word="researchers">researchers</span> <span word="showed">showed</span> <span word="that">that</span> <span word="people">people</span> <span word="instructed">instructed</span> <span word="to">to</span> <span word="apply">apply</span> <span word="sunscreen">sunscreen</span> <span word="every">every</span> <span word="day">day</span> <span word="showed">showed</span> 24% <span word="less">less</span> <span word="skin">skin</span> <span word="aging">aging</span>, <span word="as">as</span> <span word="measured">measured</span> <span word="by">by</span> <span word="lines">lines</span> <span word="and">and</span> <span word="coarseness">coarseness</span> <span word="of">of</span> <span word="the">the</span> <span word="skin">skin</span>, <span word="than">than</span> <span word="those">those</span> <span word="told">told</span> <span word="to">to</span> <span word="use">use</span> <span word="the">the</span> <span word="cream">cream</span> <span word="as">as</span> <span word="they">they</span> <span word="usually">usually</span> <span word="do">do</span>.</p><p>在《内科学年鉴》(<span word="Annals">Annals</span> <span word="of">of</span> <span word="Internal">Internal</span> <span word="Medicine">Medicine</span>)上刊登的一篇论文中，研究人员指出，按指示每天涂抹防晒霜的人皮肤老化程度比被告知只是按照平时习惯使用防晒霜的人低24%。皮肤老化程度是以皮肤的皱纹和粗糙度来衡量的。</p><p>'<span word="This">This</span> <span word="is">is</span> <span word="great">great</span> <span word="fodder">fodder</span> <span word="for">for</span> <span word="us">us</span> <span word="to">to</span> <span word="encourage">encourage</span> <span word="people">people</span> <span word="to">to</span> <span word="use">use</span> <span word="sunscreen">sunscreen</span>, ' <span word="said">said</span> <span word="Jeffrey">Jeffrey</span> <span word="Dover">Dover</span>, <span word="a">a</span> <span word="dermatologist">dermatologist</span> <span word="in">in</span> <span word="Chestnut">Chestnut</span> <span word="Hill">Hill</span>, <span word="Mass">Mass</span>. '<span word="I">I</span> <span word="will">will</span> <span word="quote">quote</span> <span word="this">this</span> <span word="paper">paper</span> <span word="every">every</span> <span word="day">day</span>.'</p><p>马萨诸塞州切斯纳特希尔(<span word="Chestnut">Chestnut</span> <span word="Hill">Hill</span>)的皮肤科医生杰弗瑞•多弗(<span word="Jeffrey">Jeffrey</span> <span word="Dover">Dover</span>)说：“这是我们鼓励大家使用防晒霜的绝佳依据。我每天都会引用这篇论文。”</p><p><span word="Sunscreen">Sunscreen</span> <span word="has">has</span> <span word="long">long</span> <span word="been">been</span> <span word="touted">touted</span> <span word="as">as</span> <span word="a">a</span> <span word="way">way</span> <span word="to">to</span> <span word="stave">stave</span> <span word="off">off</span> <span word="photoaging">photoaging</span>, <span word="or">or</span> <span word="changes">changes</span> <span word="to">to</span> <span word="the">the</span> <span word="skin">skin</span> <span word="caused">caused</span> <span word="by">by</span> <span word="sun">sun</span> <span word="exposure">exposure</span>. <span word="But">But</span> <span word="there">there</span> <span word="wasn">wasn</span>'<span word="t">t</span> <span word="hard">hard</span> <span word="evidence">evidence</span> <span word="in">in</span> <span word="humans">humans</span> <span word="to">to</span> <span word="support">support</span> <span word="the">the</span> <span word="claim">claim</span>, <span word="study">study</span> <span word="authors">authors</span> <span word="said">said</span>. <span word="A">A</span> <span word="trial">trial</span> <span word="published">published</span> <span word="in">in</span> 1995 <span word="involved">involved</span> 35 <span word="people">people</span> <span word="with">with</span> <span word="past">past</span> <span word="skin">skin</span> <span word="cancer">cancer</span> <span word="and">and</span> <span word="found">found</span> <span word="no">no</span> <span word="evidence">evidence</span> <span word="of">of</span> <span word="sunscreen">sunscreen</span>'<span word="s">s</span> <span word="protective">protective</span> <span word="effect">effect</span>, <span word="measured">measured</span> <span word="by">by</span> <span word="looking">looking</span> <span word="at">at</span> <span word="skin">skin</span> <span word="biopsies">biopsies</span> <span word="under">under</span> <span word="a">a</span> <span word="microscope">microscope</span>. <span word="But">But</span> <span word="larger">larger</span>, <span word="randomized">randomized</span> <span word="trials">trials</span> <span word="open">open</span> <span word="to">to</span> <span word="the">the</span> <span word="larger">larger</span> <span word="community">community</span> <span word="hadn">hadn</span>'<span word="t">t</span> <span word="been">been</span> <span word="done">done</span>, <span word="for">for</span> <span word="logistical">logistical</span> <span word="and">and</span> <span word="cost">cost</span> <span word="reasons">reasons</span>.</p>
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