脂肪不能过少，少量的健康脂肪，如橄榄油、牛油果、和坚果会改善胆固醇程度，并有其它的好处。
Don't get too skimpy with fat. Small amounts of healthful fats like olive oil, avocado, and nuts improve cholesterol levels and have other benefits, too.
头发的自然光泽来自它自身的护发素：油脂，它含有蜡和脂肪，还含有抗感染的自然抗菌剂。油脂含量过多会导致油性发质，相反，油脂含量过少则会导致干性发质。
Hair's natural shine is supplied by its own conditioner, sebum, an oil composed of waxes and fats and also containing a natural antiseptic that helps fight infection.
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