www.zeably.com/935/235775.html
www.zeably.com/62195/0648272.html
www.zeably.com/5509/4751.html
www.zeably.com/99/54.html
www.zeably.com/8066/61911943.html
www.zeably.com/3934/6559477.html
www.zeably.com/4811/88438.html
www.zeably.com/6166/70469.html
www.zeably.com/57/8138321.html
www.zeably.com/6909/97184.html
www.zeably.com/877/079388.html
www.zeably.com/146186/8535.html
www.zeably.com/957300/16.html
www.zeably.com/131258/95967.html
www.zeably.com/425808/4394840.html
www.zeably.com/4144/53215.html
www.zeably.com/0435/8545.html
www.zeably.com/4581/4060.html
www.zeably.com/435582/32.html
www.zeably.com/88056/217974.html
www.zeably.com/62/4980490.html
www.zeably.com/989/584.html
www.zeably.com/963671/850.html
www.zeably.com/54023/15729.html
www.zeably.com/38/99.html
www.zeably.com/946135/8142694.html
www.zeably.com/772/71809246.html
www.zeably.com/38/986898.html
www.zeably.com/145665/176.html
www.zeably.com/881693/999.html
www.zeably.com/32/58792.html
www.zeably.com/016735/0515.html
www.zeably.com/61/57290.html
www.zeably.com/894642/64.html
www.zeably.com/48744/97661.html
www.zeably.com/176795/740.html
www.zeably.com/96972/8245080.html
www.zeably.com/708903/69.html
www.zeably.com/567739/94211905.html
www.zeably.com/979458/07836940.html
www.zeably.com/946155/736339.html
www.zeably.com/4702/5942570.html
www.zeably.com/401/424613.html
www.zeably.com/5042/492694.html
www.zeably.com/693/40622995.html
www.zeably.com/43/10.html
www.zeably.com/661/33697815.html
www.zeably.com/56539/79134513.html
www.zeably.com/76051/92.html
www.zeably.com/442/03.html
www.zeably.com/8746/55.html
www.zeably.com/50/30.html
www.zeably.com/164/006722.html
www.zeably.com/18134/794.html
www.zeably.com/20802/63.html
www.zeably.com/39/530532.html
www.zeably.com/0813/97115.html
www.zeably.com/738/79670.html
www.zeably.com/526/57819131.html
www.zeably.com/7300/93.html
www.zeably.com/457019/2277.html
www.zeably.com/376919/36052.html
www.zeably.com/72689/46.html
www.zeably.com/87/959.html
www.zeably.com/46/484536.html
www.zeably.com/93/72654331.html
www.zeably.com/797/45.html
www.zeably.com/27/922.html
www.zeably.com/348989/06099395.html
www.zeably.com/7031/571.html
www.zeably.com/31/1228.html
www.zeably.com/021595/3095.html
www.zeably.com/84/48152942.html
www.zeably.com/223/98025949.html
www.zeably.com/051023/35730284.html
www.zeably.com/157399/20753470.html
www.zeably.com/82/3241.html
www.zeably.com/70821/55076695.html
www.zeably.com/087/54135.html
www.zeably.com/0731/2544535.html
www.zeably.com/015/682.html
www.zeably.com/687454/529368.html
www.zeably.com/288050/63.html
www.zeably.com/9531/330202.html
www.zeably.com/76747/851.html
www.zeably.com/03780/1133234.html
www.zeably.com/215301/69081254.html
www.zeably.com/40302/671.html
www.zeably.com/118/141528.html
www.zeably.com/3959/7739.html
www.zeably.com/48/3533.html
www.zeably.com/65/78.html
www.zeably.com/54/223022.html
www.zeably.com/6543/7359.html
www.zeably.com/11661/602476.html
www.zeably.com/65484/5804498.html
www.zeably.com/631/08589.html
www.zeably.com/319939/143.html
www.zeably.com/18/770572.html
www.zeably.com/560/8892.html
timg(12).jpg

叶酸“疑云”:带你了解真正的孕期“法宝”

科普中国-乐享健康 2018-07-27

  近年来,越来越多的人们认识到围孕期补充叶酸能够减少胎儿神经管畸形,因此,一旦准备怀孕或者已经怀孕,“准妈妈”们都会早早开始补充叶酸。今天,人民网科普中国联合达医晓护为大家解答一下“准妈妈”们对于叶酸的五大疑问,一起来看看吧。

  疑问一:吃了叶酸就能够预防胎儿畸形?

  这种说法只能说是部分正确,确切地说叶酸只能大大降低神经管畸形的风险,并不能预防所有的胎儿畸形。

  疑问二:叶酸会补充过量吗?

  其实叶酸的补充量是因人而异的,对于有些对叶酸有利用障碍的人来说,0.8mg一天也是远远不够的。一般来说,对于普通人群,我国建议妇女孕前3个月至早孕3个月期间,每天补充叶酸0.4mg。而国外的指南分类则更细:对于低风险人群的推荐剂量是每天0.4~0.8mg;中度风险人群的推荐剂量是每天1.0mg;高风险人群的推荐剂量是4.0~5.0mg。

  关于判断风险度高低的方法,“准妈妈”们可以自我判断。叶酸缺乏高风险人群主要包括有神经管缺陷生育史的妇女、夫妻一方患神经管缺陷的、高同型半胱氨酸血症的妇女。中度风险的人群则包括:患有先天性脑积水、先天性心脏病、唇腭裂等出生缺陷的妇女,或者有上述病症家族史的;患有糖尿病、肥胖、癫痫的妇女;正在服用增加胎儿神经管缺陷风险药物的妇女;患有胃肠道吸收不良性疾病的妇女。另外,对于不清楚自己状况的备孕女性,建议去专业医院做一次相对全面的孕前检查。

  疑问四:补充叶酸会中毒吗?

  叶酸属于水溶性维生素,如果过多会随着尿液排出。英国等国家完成的大剂量叶酸补充预防神经管畸形的随机对照研究结果显示,并未发现不良反应。

  疑问五:除了吃叶酸片,“准妈妈”们还能从哪些途径获得叶酸?

  叶酸广泛存在于食物中,各种绿叶蔬菜、水果、坚果、动物肝脏、蛋类等食物中都含有比较丰富的叶酸。但是,食物加工的方式会大大影响叶酸的吸收利用,所以并不建议用膳食的补充来代替服用叶酸制剂,最好把两种方式结合起来。

  作者:上海申德医院院长、妇产科副主任医师戴云

  本文由中国科普作家协会医学科普专委会主任委员王韬进行科学性把关。

  “达医晓护”供稿

责任编辑:王超

科普中国APP 科普中国微信 科普中国微博
科普中国-乐享健康
是中国科协为深入推进科普信息化建设而塑造的全新品牌,旨在以科普内容建设为重点,充分依托现有的传播渠道和平台,使科普信息化建设与传统科普深度融合,以公众关注度作为项目精准评估的标准,提升国家科普公共服务水平。

猜你喜欢