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孕期准妈妈究竟能喝茶水吗节能

民生视野  2020-10-25 11:36 字号: 大 中 小

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各种茶所含成分不同,绿茶含锌量极为丰富,而红茶的浸出液中含锌量则甚微。锌元素对胎儿的正常起着极其重要的作用。因此,专家认为喜欢喝茶的孕妇可以适量喝点绿茶。

但是,孕妇如果喝茶太多、太浓,特别是饮用浓红茶,对胎儿就会产生危害。茶叶中含有2%~5%的咖啡因,每500毫升浓红茶大约含咖啡因0.06毫克。咖啡因具有兴奋作用,饮茶过多会刺激胎儿增加,甚至危害胎儿的生长发育。日本专家的调查已证实,孕妇若每天饮5杯红茶就可能使新生儿体重减轻。茶叶中含有鞣酸,鞣酸可与孕妇食物中的铁元素结合成为一种不能被机体吸收的复合物。孕妇如果过多地饮用浓茶就有引起妊娠的可能,胎儿也可能出现先天性缺铁性贫血。科学家进行过试验,用三氯化铁溶液作为铁质来源给人服用,发现饮用白开水者铁的吸收率为21.7%,而饮用浓茶者的吸收率仅为6.2%。

饮用淡绿茶对孕妇对胎儿有益,但绿茶中也含有鞣酸,也能妨碍铁的吸收。怎样做才能使喝绿茶既对孕妇及胎儿有利又不影响铁的吸收呢?孕妇在饭后1小时后再饮用淡绿茶,就可以解决这个矛盾了。

没有饮茶习惯的孕妇最好用点富含的饮料,因为维生素C能帮助铁的吸收,还能增强机体抗病能力。

相关知识:

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