研究表明 维生素D缺乏可能增加流产的风险
<p><span word="Women">Women</span> <span word="not">not</span> <span word="receiving">receiving</span> <span word="enough">enough</span> <span word="vitamin">vitamin</span> <span word="D">D</span> <span word="take">take</span> <span word="longer">longer</span> <span word="to">to</span> <span word="get">get</span> <span word="pregnant">pregnant</span> <span word="and">and</span> <span word="may">may</span> <span word="even">even</span> <span word="increase">increase</span> <span word="their">their</span> <span word="risk">risk</span> <span word="of">of</span> <span word="having">having</span> <span word="a">a</span> <span word="miscarriage">miscarriage</span>, <span word="a">a</span> <span word="study">study</span> <span word="has">has</span> <span word="found">found</span>.</p><p>一项研究发现，没有摄入足够维生素<span word="D">D</span>的女性需要更长的时间才能怀孕，甚至可能面临更高的流产风险。</p><p><span word="Researchers">Researchers</span> <span word="analyzed">analyzed</span> <span word="levels">levels</span> <span word="of">of</span> <span word="the">the</span> <span word="essential">essential</span> <span word="nutrient">nutrient</span> <span word="in">in</span> <span word="the">the</span> <span word="blood">blood</span>, <span word="before">before</span> <span word="pregnancy">pregnancy</span> <span word="and">and</span> <span word="eight">eight</span> <span word="weeks">weeks</span> <span word="after">after</span>, <span word="of">of</span> 1,200 <span word="women">women</span> <span word="who">who</span> <span word="had">had</span> <span word="experienced">experienced</span> <span word="a">a</span> <span word="previous">previous</span> <span word="pregnancy">pregnancy</span> <span word="loss">loss</span> <span word="and">and</span> <span word="were">were</span> <span word="hoping">hoping</span> <span word="to">to</span> <span word="conceive">conceive</span> <span word="again">again</span>.</p><p>研究人员比对分析了1200名女性孕前和孕后8周血液中必需营养素的水平，这些女性此前都曾经历过妊娠失败，并希望能重新受孕。</p><p><span word="Those">Those</span> <span word="whose">whose</span> <span word="vitamin">vitamin</span> <span word="D">D</span> <span word="levels">levels</span> <span word="were">were</span> <span word="in">in</span> <span word="line">line</span> <span word="with">with</span> <span word="recommended">recommended</span> <span word="levels">levels</span> <span word="prior">prior</span> <span word="to">to</span> <span word="conception">conception</span> <span word="were">were</span> 15% <span word="more">more</span> <span word="likely">likely</span> <span word="to">to</span> <span word="have">have</span> <span word="a">a</span> <span word="live">live</span> <span word="birth">birth</span>, <span word="and">and</span> <span word="risk">risk</span> <span word="of">of</span> <span word="miscarriage">miscarriage</span> <span word="decreased">decreased</span> <span word="as">as</span> <span word="levels">levels</span> <span word="of">of</span> <span word="the">the</span> <span word="vitamin">vitamin</span> <span word="rose">rose</span>.</p><p>那些在孕前体内维生素<span word="D">D</span>水平与推荐水平一致的女性活产的可能性要高出15%，流产风险会随着维生素<span word="D">D</span>水平的提高而降低。</p>
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