figuring out the amount of added sugar in foods is tricky because it is not listed on the nutrition facts panel of packaged foods.
计算出食品中额外糖分的含量是很困难的,因为它没有在包装食品的营养标示面板上标注。
calories make you fat, and most 「low-fat」 or 「fat-free」 foods actually have just as many calories as their full-fat versions, because of added sugar and chemicals.