吃盐也会使人上瘾 竟类似毒品功效
<p><span word="Some">Some</span> <span word="will">will</span> <span word="no">no</span> <span word="doubt">doubt</span> <span word="take">take</span> <span word="the">the</span> <span word="news">news</span> <span word="with">with</span> <span word="a">a</span> <span word="pinch">pinch</span> <span word="of">of</span> <span word="salt">salt</span>. 也许有人会对接下来的这条资讯产生疑惑。</p><p><span word="But">But</span> <span word="researchers">researchers</span> <span word="claim">claim</span> <span word="that">that</span> <span word="salt">salt</span> <span word="is">is</span> <span word="addictive">addictive</span> <span word="in">in</span> <span word="the">the</span> <span word="same">same</span> <span word="way">way</span> <span word="as">as</span> <span word="cigarettes">cigarettes</span> <span word="or">or</span> <span word="hard">hard</span> <span word="drugs">drugs</span>, <span word="with">with</span> <span word="the">the</span> <span word="craving">craving</span> <span word="triggering">triggering</span> <span word="the">the</span> <span word="same">same</span> <span word="genes">genes</span>, <span word="brain">brain</span> <span word="cells">cells</span> <span word="and">and</span> <span word="brain">brain</span> <span word="connections">connections</span>.</p><p>不过研究人员声称，我们平时所食用的盐就如同烟草或硬性杜平一样会让人上瘾，因为它们都能刺激相同的基因，激发大脑细胞对此产生渴望和依赖。</p><p><span word="The">The</span> <span word="finding">finding</span> <span word="could">could</span> <span word="help">help</span> <span word="explain">explain</span> <span word="why">why</span> <span word="many">many</span> <span word="find">find</span> <span word="it">it</span> <span word="so">so</span> <span word="hard">hard</span> <span word="to">to</span> <span word="cut">cut</span> <span word="back">back</span> <span word="on">on</span> <span word="salt">salt</span>, <span word="despite">despite</span> <span word="warnings">warnings</span> <span word="about">about</span> <span word="dangers">dangers</span> <span word="to">to</span> <span word="blood">blood</span> <span word="pressure">pressure</span> <span word="and">and</span> <span word="heart">heart</span> <span word="health">health</span>.</p><p>这想法向或许能解释这样一种现象，再被告知了汇兑血压和心脏产生健康的威胁，不过还是有很多人很难将食物中的盐量降低。</p><p><span word="For">For</span> <span word="the">the</span> <span word="study">study</span>, <span word="Australian">Australian</span> <span word="and">and</span> <span word="American">American</span> <span word="scientists">scientists</span> <span word="kept">kept</span> <span word="some">some</span> <span word="mice">mice</span> <span word="on">on</span> <span word="low">low</span>-<span word="salt">salt</span> <span word="diets">diets</span> <span word="and">and</span> <span word="gave">gave</span> <span word="others">others</span> <span word="a">a</span> <span word="salt">salt</span> <span word="drip">drip</span>.</p><p>澳大利亚和美国的科学家合力完成了这项实验，他们给一部分的小白鼠低盐的饲料，而另一部分却加大盐分的比重。</p><p><span word="Activity">Activity</span> <span word="in">in</span> <span word="the">the</span> <span word="creatures">creatures</span>' <span word="brains">brains</span> <span word="was">was</span> <span word="then">then</span> <span word="compared">compared</span> <span word="with">with</span> <span word="that">that</span> <span word="in">in</span> <span word="mice">mice</span> <span word="fed">fed</span> <span word="normally">normally</span>. <span word="They">They</span> <span word="also">also</span> <span word="studied">studied</span> <span word="the">the</span> <span word="brains">brains</span> <span word="of">of</span> <span word="mice">mice</span> <span word="that">that</span> <span word="had">had</span> <span word="been">been</span> <span word="starved">starved</span> <span word="of">of</span> <span word="salt">salt</span> <span word="for">for</span> <span word="three">three</span> <span word="days">days</span> <span word="and">and</span> <span word="then">then</span> <span word="given">given</span> <span word="salty">salty</span> <span word="water">water</span> <span word="to">to</span> <span word="drink">drink</span> <span word="freely">freely</span>.</p><p>然后将这两批进行特殊“饮食”的白鼠的大脑活动与正常“饮食”的白鼠比较。科学家们还研究了已经三天没有食用任何盐分的白鼠的大脑，之后在给它们盐水，让其自由饮用。</p>
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