正在播放:维生素狂热正片
维生素,又称维他命,适量摄取可保持身体健康,而过量则会中毒。维生素已成为价值**美元的产业,Derek Muller博士讲述维生素的科学和历史,以及怎样合理摄取。 Almost one billion of us take a regular dietary supplement, mainly vitamin tablets. Vitamins are enthusiastically endorsed by celebrities, and vitamin-fortified foods line our supermarket shelves. But how safe are these products? Is it true that vitamins are “natural” and therefore can’t do you an...
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