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第二种主要营养素是脂肪。有人看到“脂肪”这个词语都会比较反感,因为它缠绕在肥胖者的身上驱之不走的东西,然而事实却并非想像的那样。和碳水化合物一样,脂肪也能提供能量(每克9卡),但是脂肪同时在体能还有其他功能。这些功能包括
The second major nutrient is fat. Some people see “fat” the term will be more objectionable, because it is wrapped around the body of the obese people do not drive things, but the fact is not like that. Like carbohydrates, fat also provides energy (9 calories per gram), but fat also has other functions in the body. These features include