Food intolerances, allergies, vitamin deficiencies, and certain medical conditions all can cause fatigue.

食物不耐症，过敏，维生素缺乏和某些疾病都会造成疲劳。

Vitamin deficiency in the diet can cause illness.

饮食中缺乏维生素可能导致疾病。

In eras when vitamin pills were unknown, vitamin deficiencies killed millions.

在维生素药片还不为人所知的时代，维生素缺乏症导致数百万人死亡。

In that light, aging itself might be seen as something treatable, the way you would treat high blood pressure or a vitamin deficiency.

从这个角度来看，衰老本身可能被视为可治疗的，就像治疗高血压或维生素缺乏一样。

So, a vitamin deficiency is when you don't have enough vitamins.

因此，维生素缺乏症是指您体内没有足够的维生素。

You'll have to eat a varied diet so you don't have a vitamin deficiency.

保罗：你必须吃多样化的饮食，这样你才不会缺乏维生素。

In review studies, researchers have linked vitamin D deficiency to depression, particularly in older adults.

在综述研究中，研究人员将维生素D缺乏与抑郁症联系起来，尤其是老年人。

If you had a " vitamin deficiency, " you would be lacking, or not having enough of certain vitamins.

如果你有“维生素缺乏症”，你就会缺乏或没有足够的某些维生素。

There was even one child with Rickets caused by vitamin deficiency that continued to take large amounts of straight cod liver oil over a period of 101 days.

有一个患有（因维生素缺乏而引起的）佝偻病的孩子，连续 101 天都选择服用大剂量的鱼肝油。