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.

youdao

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.

youdao

该研究结果刊载于医学杂志《睡眠》中。研究并没有证明睡眠过少或过多会直接导致过量脂肪增加。

The study, reported in the journal sleep, does not prove that too little or too much sleep directly leads to excess fat gain.

youdao