包装上凡是标明“零热量”的食品,现在都会受到年轻人的追捧。有杂志近期刊文称,这些零热量产品里面所含的化学物质,可能才是导致发胖的元凶。

　　零热量产品,如饮料、果冻等,通常会使用人工甜味剂代替蔗糖。而美国普度大学在《行为神经科学》期刊上发表的研究发现,食用替代糖的试验组,最后反而吃得过多,体重增加也较明显。因为人工甜味剂会让人忘记自然甜度的味道,干扰体内控制热量的能力,身体会不自觉补充更多热量。零热量是指每100克食物所含热量不应超过4卡,因此准确地说,“零热量”并非毫无热量。一旦消费者放松戒心大吃,时间久了就会有累积效应,同时摄入过多的色素和香料等。

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