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夫妻年齡影響胎兒性別 年齡越大 生女幾率越高

出處：媽媽育兒網(wǎng) 日期：2014-10-05 11:17:37 編輯：Chen

雖然說生男生女都一樣，但我們貌似習慣了胎兒還在媽媽肚子里的時候就去猜性別。關(guān)于辨別胎兒性別的方法，有從古至的民間說法，也有人們認為最值得依賴的科學說法。

然而，想掌握生男生女，并不是等懷孕之后再來確定，因為此時已經(jīng)為時已晚。不管是你想生兒子或生女兒，從懷孕前做準確更靠譜。

什么情況下容易生兒子，哪些夫妻更容易生女兒？據(jù)國外科學家最近研究發(fā)現(xiàn)，夫妻年齡越大，生女的幾率就越高。

國外科學家最近研究發(fā)現(xiàn)：孕婦在懷孕期間大量進食，通常會生男嬰，同時出生的男嬰要比女嬰重。研究人員通過對244名孕婦進行的6個月的觀察研究表明：男嬰睪丸分泌睪丸激素是懷男嬰的孕婦進食量大的直接原因，也就是說飯量大的孕婦生男嬰的幾率大。

有專家表示：新生的男嬰比女嬰重，這一普遍現(xiàn)象將有助于對孕婦懷孕期間嬰兒性別的認別。懷有男嬰的孕婦在懷孕期間要消耗體內(nèi)10%以上的卡路里和8%以上的蛋白質(zhì)。孕婦必須通過吸收大量碳水化合物和動植物脂肪來補充體內(nèi)能量。研究數(shù)據(jù)也表明，在胚胎中的男嬰要比女嬰需要更多的營養(yǎng)和能量。

年齡的影響。夫婦年齡每增加5歲，生女孩機會增1‰，丈夫年齡過高生男孩機會減少，25-29歲之間生男比生女多，小于25和大于29歲生女比生男多。

吸煙降低生男孩的幾率。由丹麥和日本科學家聯(lián)手進行的另一項調(diào)查則發(fā)現(xiàn)，夫婦吸煙與否會影響胎兒的性別。設若夫婦在準備生孩子期間吸煙，可能會降低生男孩的幾率。

胎兒性別的醫(yī)學預測方法

超聲波掃描：利用超聲波診斷胎兒性別時，男寶寶的準確度可達95%以上，女寶寶的可靠度則只有85%左右。

羊膜穿刺術(shù)：為了診斷胎兒是否有染色體方面或神經(jīng)管的缺陷，通常在懷孕16～20周實施，也可知道胎兒的性別，準確度可達99%，但是有1%的流產(chǎn)幾率。

絨毛采檢術(shù)：為了診斷胎兒的染色體是否正常，但也有人用來診斷胎兒的性別，準確率可達98%，是但它可以造成流產(chǎn)3%～5%，通常在懷孕8～10周時做。

驗血：利用基因工程的技術(shù)，采取母體的血液，來判斷胎兒的性別，對胎兒沒有任何危險，一般孕期8周就可以了。

本文由媽媽育兒網(wǎng)（http://m.15thirdstreetblackrock.com/）小編編輯整理

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