都是手机惹的祸？
<p>都是手机惹的祸？</p><p><span word="Cellphone">Cellphone</span> <span word="headaches">headaches</span> <span word="all">all</span> <span word="in">in</span> <span word="the">the</span> <span word="mind">mind</span></p><p>[ 2007-05-28 16:27 ]</p><p><span word="Exposure">Exposure</span> <span word="to">to</span><span word="the">the</span> <span word="radiofrequency">radiofrequency</span> <span word="fields">fields</span> <span word="generated">generated</span> <span word="by">by</span> <span word="mobile">mobile</span> <span word="phones">phones</span> <span word="does">does</span> <span word="not">not</span> <span word="cause">cause</span> <span word="head">head</span><span word="pain">pain</span> <span word="or">or</span> <span word="increase">increase</span> <span word="blood">blood</span> <span word="pressure">pressure</span>, <span word="according">according</span> <span word="to">to</span> <span word="a">a</span><span word="Norwegian">Norwegian</span> <span word="study">study</span>.</p><p><span word="Instead">Instead</span>, <span word="people">people</span> <span word="who">who</span> <span word="experience">experience</span> <span word="such">such</span> <span word="symptoms">symptoms</span> <span word="do">do</span> <span word="so">so</span> <span word="because">because</span> <span word="they">they</span> <span word="expect">expect</span><span word="that">that</span> <span word="they">they</span> <span word="will">will</span> <span word="occur">occur</span>, <span word="the">the</span> <span word="findings">findings</span> <span word="suggest">suggest</span>.<span word="Dr">Dr</span> <span word="Gunnhild">Gunnhild</span> <span word="Oftedal">Oftedal</span> <span word="and">and</span> <span word="associates">associates</span> <span word="at">at</span> <span word="the">the</span> <span word="Norway">Norway</span> <span word="University">University</span> <span word="of">of</span> <span word="Science">Science</span><span word="and">and</span> <span word="Technology">Technology</span> <span word="in">in</span> <span word="Trondheim">Trondheim</span> <span word="recruited">recruited</span> 17 <span word="subjects">subjects</span> <span word="who">who</span> "<span word="regularly">regularly</span><span word="experienced">experienced</span> <span word="pain">pain</span> <span word="or">or</span> <span word="discomfort">discomfort</span> <span word="in">in</span> <span word="the">the</span> <span word="head">head</span> <span word="during">during</span> <span word="or">or</span> <span word="shortly">shortly</span> <span word="after">after</span> <span word="mobile">mobile</span><span word="phone">phone</span> <span word="calls">calls</span> <span word="lasting">lasting</span> <span word="between">between</span> 15 <span word="and">and</span> 30 <span word="minutes">minutes</span>."<span word="The">The</span> <span word="participants">participants</span> <span word="were">were</span> <span word="tested">tested</span> <span word="during">during</span> <span word="mobile">mobile</span> <span word="phone">phone</span><span word="radiofrequency">radiofrequency</span> <span word="exposure">exposure</span> <span word="and">and</span> <span word="sham">sham</span><span word="exposure">exposure</span>, <span word="without">without</span> <span word="knowing">knowing</span> <span word="which">which</span> <span word="session">session</span> <span word="was">was</span> <span word="which">which</span>. <span word="Each">Each</span><span word="session">session</span> <span word="lasted">lasted</span> 30 <span word="minutes">minutes</span>, <span word="and">and</span> 65 <span word="pairs">pairs</span> <span word="of">of</span> <span word="trials">trials</span> <span word="were">were</span> <span word="conducted">conducted</span>.<span word="As">As</span> <span word="reported">reported</span> <span word="in">in</span> <span word="the">the</span> <span word="medical">medical</span> <span word="journal">journal</span> <span word="Cephalalgia">Cephalalgia</span>, <span word="the">the</span> <span word="subjects">subjects</span> <span word="said">said</span> <span word="they">they</span><span word="felt">felt</span> <span word="an">an</span> <span word="increase">increase</span> <span word="in">in</span> <span word="pain">pain</span> <span word="or">or</span> <span word="discomfort">discomfort</span> <span word="during">during</span> 68 <span word="per">per</span> <span word="cent">cent</span> <span word="of">of</span> <span word="all">all</span> <span word="trials">trials</span>.<span word="The">The</span> <span word="degree">degree</span> <span word="of">of</span> <span word="symptoms">symptoms</span> <span word="was">was</span> <span word="not">not</span> <span word="associated">associated</span> <span word="with">with</span> <span word="the">the</span> <span word="order">order</span> <span word="of">of</span> <span word="trials">trials</span>.<span word="The">The</span> <span word="researchers">researchers</span> <span word="observed">observed</span> <span word="no">no</span> <span word="statistically">statistically</span> <span word="significant">significant</span> <span word="correlations">correlations</span><span word="between">between</span> <span word="actual">actual</span> <span word="exposures">exposures</span> <span word="and">and</span> <span word="the">the</span> <span word="subjects">subjects</span>' <span word="reports">reports</span> <span word="of">of</span> <span word="symptom">symptom</span> <span word="severity">severity</span>,<span word="and">and</span> <span word="no">no</span> <span word="effects">effects</span> <span word="of">of</span> <span word="exposure">exposure</span> <span word="on">on</span> <span word="changes">changes</span> <span word="in">in</span> <span word="heart">heart</span> <span word="rate">rate</span> <span word="or">or</span> <span word="blood">blood</span> <span word="pressure">pressure</span>.<span word="Oftedal">Oftedal</span>'<span word="s">s</span> <span word="team">team</span> <span word="concludes">concludes</span> <span word="that">that</span> <span word="the">the</span> <span word="most">most</span> <span word="likely">likely</span> <span word="explanation">explanation</span> <span word="for">for</span> <span word="the">the</span> <span word="headaches">headaches</span><span word="and">and</span> <span word="discomfort">discomfort</span> <span word="reported">reported</span> <span word="by">by</span> <span word="the">the</span> <span word="subjects">subjects</span> "<span word="is">is</span> <span word="that">that</span> <span word="the">the</span> <span word="symptoms">symptoms</span> <span word="are">are</span> <span word="due">due</span><span word="to">to</span> <span word="negative">negative</span> <span word="expectations">expectations</span>."</p>
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