有些垃圾食品可能会改变你的大脑，让你更能吃
<p><span word="Emerging">Emerging</span> <span word="evidence">evidence</span> <span word="in">in</span> <span word="humans">humans</span> <span word="suggests">suggests</span> <span word="a">a</span> <span word="typically">typically</span> <span word="Western">Western</span> <span word="high">high</span>-<span word="fat">fat</span>, <span word="high">high</span>-<span word="sugar">sugar</span> '<span word="junk">junk</span> <span word="food">food</span>' <span word="diet">diet</span> <span word="can">can</span> <span word="quickly">quickly</span> <span word="undermine">undermine</span> <span word="your">your</span> <span word="brain">brain</span>'<span word="s">s</span> <span word="appetite">appetite</span> <span word="control">control</span>.</p><p>在人类中新发现的证据显示含有高脂高糖“垃圾食品”的典型西方饮食能快速破坏大脑对食欲的控制。</p><p><span word="After">After</span> <span word="indulging">indulging</span> <span word="in">in</span> <span word="a">a</span> <span word="week">week</span>-<span word="long">long</span> <span word="binge">binge</span> <span word="of">of</span> <span word="waffles">waffles</span>, <span word="milkshakes">milkshakes</span> <span word="and">and</span> <span word="similarly">similarly</span> <span word="rich">rich</span> <span word="foods">foods</span>, <span word="researchers">researchers</span> <span word="in">in</span> <span word="Australia">Australia</span> <span word="found">found</span> <span word="young">young</span> <span word="and">and</span> <span word="healthy">healthy</span> <span word="volunteers">volunteers</span> <span word="scored">scored</span> <span word="worse">worse</span> <span word="on">on</span> <span word="memory">memory</span> <span word="tests">tests</span> <span word="and">and</span> <span word="experienced">experienced</span> <span word="a">a</span> <span word="greater">greater</span> <span word="desire">desire</span> <span word="to">to</span> <span word="eat">eat</span> <span word="junk">junk</span> <span word="food">food</span>, <span word="even">even</span> <span word="when">when</span> <span word="they">they</span> <span word="were">were</span> <span word="already">already</span> <span word="full">full</span>.</p><p>狂吃华夫饼、奶昔和类似的高脂食物一周后，澳大利亚的研究人员发现年轻健康的志愿者在记忆力测试中成绩欠佳，而且对垃圾食品更有食欲，甚至在吃饱之后还想吃。</p><p><span word="The">The</span> <span word="findings">findings</span> <span word="suggest">suggest</span> <span word="something">something</span> <span word="is">is</span> <span word="amiss">amiss</span> <span word="in">in</span> <span word="the">the</span> <span word="hippocampus">hippocampus</span> - <span word="a">a</span> <span word="region">region</span> <span word="of">of</span> <span word="the">the</span> <span word="brain">brain</span> <span word="that">that</span> <span word="supports">supports</span> <span word="memory">memory</span> <span word="and">and</span> <span word="helps">helps</span> <span word="to">to</span> <span word="regulate">regulate</span> <span word="appetite">appetite</span>. <span word="When">When</span> <span word="we">we</span> <span word="are">are</span> <span word="full">full</span>, <span word="the">the</span> <span word="hippocampus">hippocampus</span> <span word="is">is</span> <span word="thought">thought</span> <span word="to">to</span> <span word="quieten">quieten</span> <span word="down">down</span> <span word="our">our</span> <span word="memories">memories</span> <span word="of">of</span> <span word="delicious">delicious</span> <span word="food">food</span>, <span word="thereby">thereby</span> <span word="reducing">reducing</span> <span word="our">our</span> <span word="appetite">appetite</span>.</p><p>研究结果表明问题出在海马体，这个区域在大脑中控制记忆力，帮助调节食欲。我们吃饱以后，海马体被认为会使美食记忆不再活跃，从而降低食欲。</p><p><span word="When">When</span> <span word="it">it</span>'<span word="s">s</span> <span word="disrupted">disrupted</span>, <span word="this">this</span> <span word="control">control</span> <span word="can">can</span> <span word="be">be</span> <span word="seriously">seriously</span> <span word="undermined">undermined</span>.</p><p>海马体受损的话，对食欲的控制也会受到严重破坏。</p><p><span word="Over">Over</span> <span word="the">the</span> <span word="years">years</span>, <span word="extensive">extensive</span> <span word="research">research</span> <span word="on">on</span> <span word="juvenile">juvenile</span> <span word="mice">mice</span> <span word="has">has</span> <span word="found">found</span> <span word="the">the</span> <span word="function">function</span> <span word="of">of</span> <span word="the">the</span> <span word="hippocampus">hippocampus</span> <span word="is">is</span> <span word="very">very</span> <span word="sensitive">sensitive</span> <span word="to">to</span> '<span word="junk">junk</span> <span word="food">food</span>', <span word="but">but</span> <span word="this">this</span> <span word="has">has</span> <span word="only">only</span> <span word="recently">recently</span> <span word="been">been</span> <span word="observed">observed</span> <span word="in">in</span> <span word="young">young</span> <span word="and">and</span> <span word="healthy">healthy</span> <span word="humans">humans</span>.</p>
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