研究表明:生得孩子越多,女性衰老得越慢
<p><span word="New">New</span> <span word="research">research</span> <span word="suggests">suggests</span> <span word="that">that</span> <span word="the">the</span> <span word="number">number</span> <span word="of">of</span> <span word="children">children</span> <span word="a">a</span> <span word="woman">woman</span> <span word="could">could</span> <span word="affect">affect</span> <span word="the">the</span> <span word="rate">rate</span> <span word="at">at</span> <span word="which">which</span> <span word="her">her</span> <span word="body">body</span> <span word="ages">ages</span>, <span word="with">with</span> <span word="more">more</span> <span word="children">children</span> <span word="leading">leading</span> <span word="to">to</span> <span word="a">a</span> <span word="slower">slower</span> <span word="rate">rate</span> <span word="of">of</span> <span word="biological">biological</span> <span word="aging">aging</span>.</p><p>新的一项研究表明，女性生育孩子的数量可能会影响身体衰老的速度，孩子越多，生理衰老的速度将会越慢。</p><p><span word="A">A</span> <span word="team">team</span> <span word="of">of</span> <span word="researchers">researchers</span> <span word="from">from</span> <span word="Simon">Simon</span> <span word="Fraser">Fraser</span> <span word="University">University</span>, <span word="Canada">Canada</span>, <span word="looked">looked</span> <span word="at">at</span> 75 <span word="indigenous">indigenous</span> <span word="Guatemalan">Guatemalan</span> <span word="women">women</span> <span word="from">from</span> <span word="two">two</span> <span word="neighboring">neighboring</span> <span word="rural">rural</span> <span word="communities">communities</span> <span word="and">and</span> <span word="collected">collected</span> <span word="data">data</span> <span word="on">on</span> <span word="the">the</span> <span word="number">number</span> <span word="of">of</span> <span word="children">children</span> <span word="the">the</span> <span word="women">women</span> <span word="had">had</span> <span word="given">given</span> <span word="birth">birth</span> <span word="to">to</span>.</p><p>加拿大西蒙弗雷泽大学的一组研究人员,观察了75名来自两个邻近农村社区的土著危地马拉女性，并收集了这些女性生育孩子的数据。</p><p><span word="To">To</span> <span word="find">find</span> <span word="a">a</span> <span word="link">link</span> <span word="between">between</span> <span word="number">number</span> <span word="of">of</span> <span word="children">children</span> <span word="and">and</span> <span word="the">the</span> <span word="rate">rate</span> <span word="of">of</span> <span word="biological">biological</span> <span word="aging">aging</span>, <span word="the">the</span> <span word="team">team</span> <span word="also">also</span> <span word="looked">looked</span> <span word="at">at</span> <span word="the">the</span> <span word="length">length</span> <span word="of">of</span> <span word="each">each</span> <span word="woman">woman</span>'<span word="s">s</span> <span word="telomeres">telomeres</span>, <span word="the">the</span> <span word="protective">protective</span> <span word="tips">tips</span> <span word="found">found</span> <span word="at">at</span> <span word="the">the</span> <span word="end">end</span> <span word="of">of</span> <span word="each">each</span> <span word="DNA">DNA</span> <span word="strand">strand</span> <span word="that">that</span> <span word="indicate">indicate</span> <span word="how">how</span> <span word="cells">cells</span> <span word="are">are</span> <span word="aging">aging</span>. <span word="The">The</span> <span word="longer">longer</span> <span word="the">the</span> <span word="cells">cells</span>, <span word="the">the</span> <span word="better">better</span> <span word="it">it</span> <span word="is">is</span> <span word="for">for</span> <span word="aging">aging</span> <span word="and">and</span> <span word="longevity">longevity</span>.</p><p>为了找到生育孩子的数量与生理衰老速度的关系，研究小组同样研究了每位女性染色体端粒的长度，每个<span word="DNA">DNA</span>链末端发现的用来显示细胞如何衰老的保护提示。研究发现，细胞越长，越有助于延年益寿。</p>
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