你应该减少摄入脂肪和碳水化合物。

You should cut down on fats and carbohydrates.

《牛津词典》

我必须要重申一下：要想减掉体内脂肪，你要做的最重要的事就是停止糖和谷物的摄取，并保持较低的碳水化合物摄入。

I have to reiterate: The most important thing you need to do to lose body fat is to stop your sugar and cereal intake and keep your carbohydrate intake low.

youdao

如果你放弃锻炼，肌肉就会萎缩，脂肪会增多。同样地，如果你消耗较多的体能，你就会减掉脂肪。

If you give up exercise, your muscles shrink and fat increases. By the same token, if you expend more energy you will lose fat.

《柯林斯英汉双解大词典》

Finally, remember myelination, where you sort of get this fatty sheath over your neuron to make it more effective?

最后,回想一下髓鞘的形成,你会在哪里长出脂肪鞘,去包裹神经元,使得神经元更有效率

耶鲁公开课 - 心理学导论课程节选

But in certain parts of the country you're not able to eat Trans fats in restaurants because they've been banned.

但在美国的某些地区,你不可能在餐厅吃到反式脂肪的,因为它们被禁售了

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Okay, so if you're underweight your body is depleting its fat stores and therefore that may make you unhealthy.

你的看法是如果体重过轻,身体会把储存的脂肪消耗尽,因此导致了健康问题

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选