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如何補充葉酸 斯利安葉酸好還是安利葉酸好

出處：媽媽育兒網日期：2010-08-18 13:23:05編輯：admin

懷孕之后補充葉酸可以預防胎兒畸形，可是如何補充葉酸呢？斯利安葉酸好還是安利葉酸好呢？葉酸是一種水溶性B族維生素，在綠葉蔬菜、水果及動物肝臟中儲存豐富。葉酸參與人體新陳代謝的全過程，是合成人體重要物質DNA的必須維生素。它的缺乏除了可以導致胎兒神經管畸形外，還可使眼、口唇、腭、胃腸道、心血管、腎、骨骼等器官的畸形率增加。

婦女懷孕前一個月到懷孕后三個月期間，每天服用O.4毫克的葉酸增補劑可以預防胎兒大部分神經管的畸形的發(fā)生。值得一提的是，婦女服用葉酸應在醫(yī)生指導下進行，另外，還需注意以下幾點：

1.必須從懷孕前一個月開始服用。強調懷孕前就要開始服用的目的是為使婦女體內的葉酸維持在一頂定的水平，以保證胚胎早期有一個較好的葉酸營養(yǎng)狀態(tài)。據研究，婦女在服用葉酸后要經過4周的時間，體內葉酸缺乏的狀態(tài)才能得以糾正。這樣在懷孕早期胎兒神經管形成的敏感期中，足夠的葉酸才能滿足神經系統(tǒng)發(fā)育的需要，而且要在懷孕后的前三個月敏感期中堅持服用才能起到最好的預防效果。

2.我國神經管畸形低發(fā)區(qū)的婦女也要增補葉酸。我國神經管畸形的發(fā)病情況是北方地區(qū)高于南方，農村高于城市。因而有人認為低發(fā)區(qū)的婦女懷孕時可以不服葉酸，這種認識的存在很可能成為出生神經管畸形兒的隱患。據調查，在低發(fā)區(qū)的育齡婦女中，仍有相當一部分人體內缺乏葉酸。因此低發(fā)區(qū)的婦女在懷孕前也絕不能掉以輕心。

3.服用葉酸增補劑能保證不生神經管畸形兒嗎？服用葉酸增補劑是為了預防孕婦體內葉酸缺乏而導致的神經管畸形。葉酸缺乏是神經管畸形發(fā)生的主要原因，但不是惟—的原因。還有家庭遺傳因素及其他環(huán)境因素等也可造成神經管畸形的發(fā)生，這些尚沒有確切的預防辦法。根據國內外的研究，服用葉酸增補劑可以預防80％的神經管畸形兒出生。

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