生孩子真的会让你“折寿”吗？
<p>如果说养育孩子的艰辛是做母亲必须付出的代价，还有一个代价是母亲们不得不面对的，那就是老得更快。新研究发现，生过孩子的女性在生理上会比没生过孩子的女性更老。生过孩子的女性<span word="DNA">DNA</span>端粒更短，这意味着细胞寿命更短。</p><p><span word="Women">Women</span> <span word="who">who</span> <span word="give">give</span> <span word="birth">birth</span> <span word="may">may</span> <span word="be">be</span> <span word="biologically">biologically</span> "<span word="older">older</span>" <span word="than">than</span> <span word="women">women</span> <span word="who">who</span> <span word="don">don</span>'<span word="t">t</span>, <span word="a">a</span> <span word="new">new</span> <span word="study">study</span> <span word="suggests">suggests</span>.</p><p>一项新研究发现，生过孩子的女性在生理上会比那些没有生过的“更老”。</p><p><span word="For">For</span> <span word="the">the</span> <span word="study">study</span>, <span word="the">the</span> <span word="researchers">researchers</span> <span word="analyzed">analyzed</span> <span word="information">information</span> <span word="from">from</span> 1,556 <span word="US">US</span> <span word="women">women</span> <span word="ages">ages</span> 20 <span word="to">to</span> 44 <span word="who">who</span> <span word="took">took</span> <span word="part">part</span> <span word="in">in</span> <span word="a">a</span> <span word="national">national</span> <span word="survey">survey</span> <span word="from">from</span> 1999 <span word="to">to</span> 2002, <span word="which">which</span> <span word="involved">involved</span> <span word="giving">giving</span> <span word="blood">blood</span> <span word="samples">samples</span>.</p><p>在该研究中，研究人员们分析了20-44岁之间的1556名美国女性信息，她们参加了1999年至2002年期间的全国调查，并给出了血 液样本。</p>
页:
[1]