研究：多喝咖啡有助视力
<p><span word="A">A</span> <span word="daily">daily</span> <span word="cup">cup</span> <span word="of">of</span> <span word="coffee">coffee</span> <span word="can">can</span> <span word="save">save</span> <span word="your">your</span> <span word="eyesight">eyesight</span>, <span word="scientists">scientists</span> <span word="claim">claim</span>.</p><p><span word="A">A</span> <span word="chemical">chemical</span> <span word="found">found</span> <span word="in">in</span> <span word="the">the</span> <span word="drink">drink</span> <span word="prevents">prevents</span> <span word="deteriorating">deteriorating</span> <span word="eyesight">eyesight</span> <span word="and">and</span> <span word="possible">possible</span> <span word="blindness">blindness</span> <span word="from">from</span> <span word="retinal">retinal</span> <span word="degeneration">degeneration</span> <span word="due">due</span> <span word="to">to</span> <span word="glaucoma">glaucoma</span>, <span word="ageing">ageing</span> <span word="and">and</span> <span word="diabetes">diabetes</span>.</p><p><span word="Researchers">Researchers</span> <span word="at">at</span> <span word="Cornell">Cornell</span> <span word="Univesity">Univesity</span> <span word="in">in</span> <span word="New">New</span> <span word="York">York</span> <span word="were">were</span> <span word="looking">looking</span> <span word="at">at</span> <span word="coffee">coffee</span>'<span word="s">s</span> <span word="antioxidant">antioxidant</span> <span word="effects">effects</span> <span word="when">when</span> <span word="they">they</span> <span word="made">made</span> <span word="the">the</span> <span word="discovery">discovery</span>.</p><p><span word="Coffee">Coffee</span> <span word="contains">contains</span> 1 <span word="percent">percent</span> <span word="caffeine">caffeine</span> <span word="but">but</span> <span word="between">between</span> 7 <span word="and">and</span> 9 <span word="percent">percent</span> <span word="chlorogenic">chlorogenic</span> <span word="acid">acid</span> <span word="which">which</span> <span word="is">is</span> <span word="a">a</span> <span word="strong">strong</span> <span word="antioxidant">antioxidant</span>.</p><p><span word="The">The</span> <span word="study">study</span>, <span word="published">published</span> <span word="in">in</span> <span word="the">the</span> <span word="Journal">Journal</span> <span word="of">of</span> <span word="Agricultural">Agricultural</span> <span word="and">and</span> <span word="Food">Food</span> <span word="Chemistry">Chemistry</span>, <span word="found">found</span> <span word="that">that</span> <span word="in">in</span> <span word="mice">mice</span> <span word="this">this</span> <span word="acid">acid</span> <span word="prevented">prevented</span> <span word="retinal">retinal</span> <span word="degeneration">degeneration</span>.</p><p><span word="Chang">Chang</span> <span word="Y">Y</span>. <span word="Lee">Lee</span>, <span word="a">a</span> <span word="professor">professor</span> <span word="of">of</span> <span word="food">food</span> <span word="science">science</span> <span word="and">and</span> <span word="the">the</span> <span word="study">study</span>'<span word="s">s</span> <span word="senior">senior</span> <span word="author">author</span> <span word="said">said</span>: ‘<span word="The">The</span> <span word="retina">retina</span> <span word="is">is</span> <span word="a">a</span> <span word="thin">thin</span> <span word="tissue">tissue</span> <span word="layer">layer</span> <span word="on">on</span> <span word="the">the</span> <span word="inside">inside</span>, <span word="back">back</span> <span word="wall">wall</span> <span word="of">of</span> <span word="the">the</span> <span word="eye">eye</span> <span word="with">with</span> <span word="millions">millions</span> <span word="of">of</span> <span word="light">light</span>-<span word="sensitive">sensitive</span> <span word="cells">cells</span> <span word="and">and</span> <span word="other">other</span> <span word="nerve">nerve</span> <span word="cells">cells</span> <span word="that">that</span> <span word="receive">receive</span> <span word="and">and</span> <span word="organise">organise</span> <span word="visual">visual</span> <span word="information">information</span>.</p><p>‘<span word="It">It</span> <span word="is">is</span> <span word="also">also</span> <span word="one">one</span> <span word="of">of</span> <span word="the">the</span> <span word="most">most</span> <span word="metabolically">metabolically</span> <span word="active">active</span> <span word="tissues">tissues</span>, <span word="demanding">demanding</span> <span word="high">high</span> <span word="levels">levels</span> <span word="of">of</span> <span word="oxygen">oxygen</span> <span word="and">and</span> <span word="making">making</span> <span word="it">it</span> <span word="prone">prone</span> <span word="to">to</span> <span word="oxidative">oxidative</span> <span word="stress">stress</span>.</p><p>‘<span word="The">The</span> <span word="lack">lack</span> <span word="of">of</span> <span word="oxygen">oxygen</span> <span word="and">and</span> <span word="production">production</span> <span word="of">of</span> <span word="free">free</span> <span word="radicals">radicals</span> <span word="leads">leads</span> <span word="to">to</span> <span word="tissue">tissue</span> <span word="damage">damage</span> <span word="and">and</span> <span word="loss">loss</span> <span word="of">of</span> <span word="sight">sight</span>.’</p><p><span word="He">He</span> <span word="added">added</span>: ‘<span word="The">The</span> <span word="study">study</span> <span word="is">is</span> <span word="important">important</span> <span word="in">in</span> <span word="understanding">understanding</span> <span word="functional">functional</span> <span word="foods">foods</span>, <span word="that">that</span> <span word="is">is</span>, <span word="natural">natural</span> <span word="foods">foods</span> <span word="that">that</span> <span word="provide">provide</span> <span word="beneficial">beneficial</span> <span word="health">health</span> <span word="effects">effects</span>.</p><p>‘<span word="Coffee">Coffee</span> <span word="is">is</span> <span word="the">the</span> <span word="most">most</span> <span word="popular">popular</span> <span word="drink">drink</span> <span word="in">in</span> <span word="the">the</span> <span word="world">world</span>, <span word="and">and</span> <span word="we">we</span> <span word="are">are</span> <span word="understanding">understanding</span> <span word="what">what</span> <span word="benefit">benefit</span> <span word="we">we</span> <span word="can">can</span> <span word="get">get</span> <span word="from">from</span> <span word="that">that</span>.’</p><p><span word="Previous">Previous</span> <span word="studies">studies</span> <span word="have">have</span> <span word="shown">shown</span> <span word="that">that</span> <span word="coffee">coffee</span> <span word="also">also</span> <span word="cuts">cuts</span> <span word="the">the</span> <span word="risk">risk</span> <span word="of">of</span> <span word="such">such</span> <span word="chronic">chronic</span> <span word="diseases">diseases</span> <span word="as">as</span> <span word="Parkinson">Parkinson</span>'<span word="s">s</span>, <span word="prostate">prostate</span> <span word="cancer">cancer</span>, <span word="diabetes">diabetes</span>, <span word="Alzheimer">Alzheimer</span>'<span word="s">s</span> <span word="and">and</span> <span word="age">age</span>-<span word="related">related</span> <span word="cognitive">cognitive</span> <span word="declines">declines</span>.</p>
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