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孕期营养，既要满足胎儿的需求，更要随着母亲的生理变化酌情增量。但是，孕妇常常会不经意地走进一些误区，导致了不必要的麻烦。 要“忌口”的六种食物：
</SPAN> </SPAN> 一、辛辣热性作料。</SPAN> </SPAN> 辣椒、花椒、胡椒、小茴香、八角、桂皮、五香粉等容易消耗肠道水分而使胃肠分泌减少，造成胃痛、痔疮、便秘。便秘时孕妇用力屏气解便，使腹压增加，压迫子宫内的胎儿，易造成胎动不安、早产等不良后果。不少孕妈咪较喜欢吃酸山楂，但是山楂对子宫有兴奋作用，过量食用可使子宫收缩导致流产，所以要少吃。</SPAN> </SPAN> 二、有兴奋作用的饮食。</SPAN> </SPAN> 含咖啡因的饮料和食品，被孕妇大量饮用后，会出现恶心、呕吐、头痛、心跳加快等症状。咖啡因还会通过胎盘进入胎儿体内，影响胎儿发育。茶叶含有较丰富的咖啡碱，饮茶将加剧孕妇的心跳速度，增加孕妇的心、肾负担，不利于胎儿的健康发育。</SPAN> </SPAN> 三、甜食。</SPAN> </SPAN> 糖类等在人体内的代谢会消耗大量的钙，孕期钙的缺乏，会影响胎儿牙齿、骨骼的发育。过多食用巧克力也不好，这样会使孕妇产生饱腹感而影响食欲，结果身体胖了，而必需的营养素却缺乏了。</SPAN> </SPAN> 四、味精。</SPAN> </SPAN> 味精是平时很普通的调味品，但是孕妇就要注意少吃或不吃。味精主要成分是谷氨酸钠，血液中的锌与其结合后便从尿中排出，味精摄入过多会消耗大量的锌，不利于胎儿神经系统的发育。</SPAN> </SPAN> 五、人参、桂圆等补品。</SPAN> </SPAN> 医学认为孕妇多数阴血偏虚，食用人参会引起气盛阴耗，加重早孕反应、水肿和高血压等;桂圆辛温助阳，孕妇食用后易动血动胎;所以不宜食用。</SPAN> </SPAN> 六、含有添加剂的食品。</SPAN> </SPAN> 罐头食品含有的添加剂，是导致畸胎和流产的危险因素，所以孕妈咪要远离罐头食品。油条在制作过程的添加明矾，是一种含铝的无机物，铝可通过胎盘侵入胎。</SPAN> 阅读全文>> |
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