研究：男人看电视太多或致精子数量减少
<p>最近发表在《英国运动医学杂志》的一份研究报告指出，男人精子数量减少或与其看电视的时间太长相关。该研究针对189名18到22岁的健康男性进行，研究发现，每周看电视20小时以上的男性精子数比不看电视的男性少44%。研究人员表示，爱看电视的男性大部分时间都处于久坐不动的状态，此类状态或许会影响其精子数量。研究发现，每周做15小时以上适度或剧烈运动的男性比每周运动5小时以下的男性精子数量高。其他有可能影响男性精子数量的因素有：吸烟、身体质量指数以及热量摄入值等。研究人员指出，该研究只是发现久坐不动生活方式与精子数量之间的关联，但并不能证明这种生活方式会直接导致精子数量减少；而精子数量减少会否对男性生育能力有影响，也尚需进一步研究来证明。</p><p><span word="Guys">Guys</span> <span word="may">may</span> <span word="now">now</span> <span word="have">have</span> <span word="another">another</span> <span word="reason">reason</span> <span word="to">to</span> <span word="get">get</span> <span word="off">off</span> <span word="the">the</span> <span word="couch">couch</span>: <span word="Watching">Watching</span> <span word="TV">TV</span> <span word="has">has</span> <span word="been">been</span> <span word="linked">linked</span> <span word="to">to</span> <span word="lower">lower</span> <span word="sperm">sperm</span> <span word="counts">counts</span>, <span word="a">a</span> <span word="new">new</span> <span word="study">study</span> <span word="suggests">suggests</span>.</p><p><span word="During">During</span> <span word="the">the</span> <span word="study">study</span>, <span word="which">which</span> <span word="involved">involved</span> 189 <span word="healthy">healthy</span> 18- <span word="to">to</span> 22-<span word="year">year</span>-<span word="olds">olds</span>, <span word="men">men</span> <span word="who">who</span> <span word="watched">watched</span> <span word="the">the</span> <span word="most">most</span> <span word="TV">TV</span> (20 <span word="or">or</span> <span word="more">more</span> <span word="hours">hours</span> <span word="a">a</span> <span word="week">week</span>) <span word="had">had</span> <span word="sperm">sperm</span> <span word="counts">counts</span> <span word="that">that</span> <span word="were">were</span> 44 <span word="percent">percent</span> <span word="lower">lower</span> <span word="than">than</span> <span word="men">men</span> <span word="who">who</span> <span word="did">did</span> <span word="not">not</span> <span word="watch">watch</span> <span word="television">television</span>.</p><p><span word="The">The</span> <span word="findings">findings</span> <span word="held">held</span> <span word="after">after</span> <span word="the">the</span> <span word="researchers">researchers</span> <span word="took">took</span> <span word="into">into</span> <span word="account">account</span> <span word="factors">factors</span> <span word="that">that</span> <span word="could">could</span> <span word="affect">affect</span> <span word="sperm">sperm</span> <span word="count">count</span>, <span word="such">such</span> <span word="as">as</span> <span word="smoking">smoking</span>, <span word="body">body</span> <span word="mass">mass</span> <span word="index">index</span> (<span word="BMI">BMI</span>) <span word="and">and</span> <span word="calorie">calorie</span> <span word="intake">intake</span>.</p><p><span word="Men">Men</span> <span word="who">who</span> <span word="watch">watch</span> <span word="a">a</span> <span word="lot">lot</span> <span word="of">of</span> <span word="TV">TV</span> <span word="may">may</span> <span word="have">have</span> <span word="a">a</span> <span word="more">more</span> <span word="sedentary">sedentary</span> <span word="lifestyle">lifestyle</span>, <span word="which">which</span> <span word="in">in</span> <span word="turn">turn</span> <span word="may">may</span> <span word="affect">affect</span> <span word="sperm">sperm</span> <span word="count">count</span>, <span word="the">the</span> <span word="researchers">researchers</span> <span word="said">said</span>. <span word="Indeed">Indeed</span>, <span word="the">the</span> <span word="men">men</span> <span word="in">in</span> <span word="the">the</span> <span word="study">study</span> <span word="who">who</span> <span word="exercised">exercised</span> <span word="the">the</span> <span word="most">most</span> ― <span word="doing">doing</span> 15 <span word="or">or</span> <span word="more">more</span> <span word="hours">hours</span> <span word="a">a</span> <span word="week">week</span> <span word="of">of</span> <span word="moderate">moderate</span> <span word="to">to</span> <span word="vigorous">vigorous</span> <span word="physical">physical</span> <span word="activity">activity</span> ― <span word="had">had</span> <span word="sperm">sperm</span> <span word="counts">counts</span> <span word="that">that</span> <span word="were">were</span> <span word="higher">higher</span> <span word="than">than</span> <span word="those">those</span> <span word="of">of</span> <span word="guys">guys</span> <span word="who">who</span> <span word="exercised">exercised</span> <span word="less">less</span> <span word="than">than</span> 5 <span word="hours">hours</span> <span word="a">a</span> <span word="week">week</span>.</p>
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