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为什么儿童最好多晒太健康的生活

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为什么儿童最好多晒太yang?

小朋友年纪小,发育速度快,而骨骼是支持全shenti重的架子,必须跟得上各bu分发展的需要。制造骨骼的重要原料钙,必须依赖维生素D才能被xi收,缺乏太yang光,维生素D就无法合成,易得ruan骨病。而且太yang光照在pi肤上,会使pi下血guan扩张,血ye旺盛,有利于有毒wu质的排xie,增qiangpi肤的抵抗力。虽然维生素D可以通过鱼肝油、新鲜蔬菜、dan、rou等补充,但不如人ti自己制造更直接。所以小朋友应多zuohu外活动,接受yang光照she1。

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