压力大的女性更容易生女孩
<p><span word="Women">Women</span> <span word="who">who</span> <span word="are">are</span> <span word="stressed">stressed</span> <span word="while">while</span> <span word="trying">trying</span> <span word="for">for</span> <span word="a">a</span> <span word="baby">baby</span> <span word="are">are</span> <span word="more">more</span> <span word="likely">likely</span> <span word="to">to</span> <span word="have">have</span> <span word="girls">girls</span>, <span word="research">research</span> <span word="suggests">suggests</span>.</p><p><span word="A">A</span> <span word="study">study</span> <span word="found">found</span> <span word="that">that</span> <span word="those">those</span> <span word="who">who</span> <span word="were">were</span> <span word="under">under</span> <span word="pressure">pressure</span> <span word="at">at</span> <span word="home">home</span>, <span word="work">work</span> <span word="or">or</span> <span word="in">in</span> <span word="their">their</span> <span word="love">love</span> <span word="life">life</span> <span word="in">in</span> <span word="the">the</span> <span word="weeks">weeks</span> <span word="or">or</span> <span word="months">months</span> <span word="before">before</span> <span word="becoming">becoming</span> <span word="pregnant">pregnant</span> <span word="had">had</span> <span word="higher">higher</span> <span word="than">than</span> <span word="usual">usual</span> <span word="odds">odds</span> <span word="of">of</span> <span word="giving">giving</span> <span word="birth">birth</span> <span word="to">to</span> <span word="a">a</span> <span word="daughter">daughter</span> <span word="rather">rather</span> <span word="than">than</span> <span word="a">a</span> <span word="son">son</span>.</p><p><span word="The">The</span> <span word="finding">finding</span>, <span word="by">by</span> <span word="Oxford">Oxford</span> <span word="University">University</span> <span word="and">and</span> <span word="US">US</span> <span word="researchers">researchers</span>, <span word="means">means</span> <span word="the">the</span> <span word="economic">economic</span> <span word="downturn">downturn</span> <span word="could">could</span> <span word="see">see</span> <span word="more">more</span> <span word="women">women</span> <span word="give">give</span> <span word="birth">birth</span> <span word="to">to</span> <span word="daughters">daughters</span>. <span word="The">The</span> <span word="study">study</span> <span word="follows">follows</span> <span word="others">others</span> <span word="that">that</span> <span word="have">have</span> <span word="shown">shown</span> <span word="the">the</span> <span word="number">number</span> <span word="of">of</span> <span word="baby">baby</span> <span word="boys">boys</span> <span word="goes">goes</span> <span word="down">down</span> <span word="following">following</span> <span word="major">major</span> <span word="upheavals">upheavals</span>.</p><p><span word="For">For</span> <span word="instance">instance</span>, <span word="in">in</span> <span word="the">the</span> <span word="months">months</span> <span word="after">after</span> <span word="the">the</span> 9/11 <span word="terrorist">terrorist</span> <span word="attacks">attacks</span>, <span word="the">the</span> <span word="number">number</span> <span word="of">of</span> <span word="boys">boys</span> <span word="born">born</span> <span word="in">in</span> <span word="New">New</span> <span word="York">York</span> <span word="plunged">plunged</span>, <span word="while">while</span> <span word="the">the</span> <span word="economic">economic</span> <span word="chaos">chaos</span> <span word="that">that</span> <span word="followed">followed</span> <span word="the">the</span> <span word="collapse">collapse</span> <span word="of">of</span> <span word="the">the</span> <span word="Berlin">Berlin</span> <span word="Wall">Wall</span> <span word="saw">saw</span> <span word="far">far</span> <span word="fewer">fewer</span> <span word="boys">boys</span> <span word="born">born</span> <span word="than">than</span> <span word="expected">expected</span> <span word="in">in</span> <span word="the">the</span> <span word="former">former</span> <span word="East">East</span> <span word="Germany">Germany</span> <span word="in">in</span> 1991.</p><p><span word="But">But</span> <span word="the">the</span> <span word="latest">latest</span> <span word="study">study</span> <span word="is">is</span> <span word="the">the</span> <span word="first">first</span> <span word="to">to</span> <span word="link">link</span> <span word="the">the</span> <span word="phenomenon">phenomenon</span> <span word="to">to</span> <span word="the">the</span> <span word="stresses">stresses</span> <span word="and">and</span> <span word="strains">strains</span> <span word="of">of</span> <span word="everyday">everyday</span> <span word="life">life</span> <span word="and">and</span> <span word="to">to</span> <span word="rising">rising</span> <span word="levels">levels</span> <span word="of">of</span> <span word="stress">stress</span> <span word="hormones">hormones</span>.</p><p><span word="Some">Some</span> 338 <span word="women">women</span> <span word="from">from</span> <span word="around">around</span> <span word="the">the</span> <span word="UK">UK</span> <span word="who">who</span> <span word="were">were</span> <span word="trying">trying</span> <span word="to">to</span> <span word="get">get</span> <span word="pregnant">pregnant</span> <span word="kept">kept</span> <span word="diaries">diaries</span> <span word="about">about</span> <span word="their">their</span> <span word="lives">lives</span> <span word="and">and</span> <span word="sex">sex</span> <span word="lives">lives</span> <span word="and">and</span> <span word="filled">filled</span> <span word="in">in</span> <span word="questionnaires">questionnaires</span> <span word="about">about</span> <span word="how">how</span> <span word="stressed">stressed</span> <span word="they">they</span> <span word="felt">felt</span>. <span word="Levels">Levels</span> <span word="of">of</span> <span word="stress">stress</span> <span word="hormones">hormones</span> <span word="including">including</span> <span word="cortisol">cortisol</span> <span word="were">were</span> <span word="measured">measured</span> <span word="in">in</span> <span word="the">the</span> <span word="months">months</span> <span word="before">before</span> <span word="pregnancy">pregnancy</span>.</p><p><span word="Of">Of</span> <span word="the">the</span> <span word="babies">babies</span> <span word="born">born</span>, 58 <span word="were">were</span> <span word="boys">boys</span> <span word="and">and</span> 72 <span word="were">were</span> <span word="girls">girls</span>. <span word="Normally">Normally</span>, <span word="in">in</span> <span word="Britain">Britain</span> 105 <span word="boys">boys</span> <span word="are">are</span> <span word="born">born</span> <span word="for">for</span> <span word="every">every</span> 100 <span word="girls">girls</span>.</p><p><span word="When">When</span> <span word="all">all</span> <span word="the">the</span> <span word="women">women</span> <span word="were">were</span> <span word="put">put</span> <span word="together">together</span> – <span word="stressed">stressed</span> <span word="and">and</span> <span word="calm">calm</span> – <span word="the">the</span> <span word="result">result</span> <span word="could">could</span> <span word="have">have</span> <span word="been">been</span> <span word="due">due</span> <span word="to">to</span> <span word="chance">chance</span>.</p>
页:
[1]